Domain: raspberrypi.org
Stories and comments across the archive that link to raspberrypi.org.
Stories · 82
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Raspberry Pi Compute Module 3+ Promises Better Performance, Starts at $25 (venturebeat.com)
The Raspberry Pi Foundation is adding a new device to its suite of miniature computers for industrial and enterprise customers. From a report: The charity today unveiled the Pi Compute Module 3+ (CM3+), successor to the two-year-old Compute Module 3 (CM3). The Pi Compute Module 3+ comes in four variants, starting at $25. The Raspberry Pi Compute Module is derived from the CM3 board but offers better thermal behavior under load. That's possible because of the Broadcom's 64-bit BCM2837B0 application processor, which was also used in last year's Raspberry Pi 3B+, and 1GB of LPDDR2 RAM. The difference between the four variants resides in their storage limits. The CM3+ Lite does not offer a built-in eMMC Flash, whereas other variants include 8GB ($30), 16GB ($35), and 32GB ($40) of eMMC Flash. These eMMC flash chips are more reliable and robust than normal SD cards, the foundation claims. -
Raspberry Pi's PoE HAT Ships For $20, Tosses in a Free Fan (linuxgizmos.com)
Raspberry Pi is offering a Power-over-Ethernet HAT board for the RPi 3 Model B+ for $20 that ships with a small fan. Per blog LinuxGizmo, the "802.3af-compliant 'Raspberry Pi PoE HAT' allows delivery of up to 15W over the RPi 3 B+'s USB-based GbE port without reducing the port's up to 300Mbps bandwidth." From the report: The Raspberry Pi PoE HAT features a fully isolated switched-mode power supply with 37-57V DC, Class 2 input and 5V/2.5A DC output. The HAT connects to both the 40-pin header and a new PoE-specific 4-pin header introduced with the B+ located near the USB ports. To enable PoE, you need power sourcing equipment, which is either "provided by your network switch or with power injectors on an Ethernet cable," writes the foundation in a blog post. -
Raspberry Pi 3 Model B+ Launched (raspberrypi.org)
New submitter stikves writes: The Raspberry foundation has launched an incremental update to the Raspberry Pi 3 model B: Raspberry Pi 3 Model B+ . In addition to slight increase (200MHz) in CPU speed, and upgraded networking (802.11ac and Gigabit, albeit over USB2), one big advantage is the better thermal management which allows sustained performance over longer load periods. Further reading: TechRepublic, and Linux Journal. -
Eben Upton Explains Why Raspberry Pi Isn't Vulnerable To Spectre Or Meltdown (raspberrypi.org)
Raspberry Pi founder and CEO Eben Upton says the Raspberry Pi isn't susceptible to the "Spectre" or "Meltdown" vulnerabilities because of the particular ARM cores they use. "Spectre allows an attacker to bypass software checks to read data from arbitrary locations in the current address space; Meltdown allows an attacker to read data from arbitrary locations in the operating system kernel's address space (which should normally be inaccessible to user programs)," Upton writes. He goes on to provide a "primer on some concepts in modern processor design" and "illustrate these concepts using simple programs in Python syntax..."
In conclusion: "Modern processors go to great lengths to preserve the abstraction that they are in-order scalar machines that access memory directly, while in fact using a host of techniques including caching, instruction reordering, and speculation to deliver much higher performance than a simple processor could hope to achieve," writes Upton. "Meltdown and Spectre are examples of what happens when we reason about security in the context of that abstraction, and then encounter minor discrepancies between the abstraction and reality. The lack of speculation in the ARM1176, Cortex-A7, and Cortex-A53 cores used in Raspberry Pi render us immune to attacks of the sort." -
Raspberry Pi Becomes Third Best-Selling General Purpose Computer of All Time, Beating Commodore 64 (raspberrypi.org)
The Raspberry Pi has outsold the Commodore 64 by selling north of 12.5 million boards in five years, becoming the world's third best-selling general purpose computer. "The Commodore 64, had, until recently, the distinction of being the third most popular general purpose computing platform," Eben Upton told a crowd at the fifth birthday party. "That's what I'm here to celebrate," he said, "we are now the third most popular general purpose computing platform after the Mac and PC." The MagPi Magazine reports: The Raspberry Pi Model 3 is the best-selling Raspberry Pi. This chart shows that Raspberry Pi 3 has accounted for almost a third of all Raspberry Pi boards sold. The Model 3 sits next to its immediate predecessor, the Raspberry Pi 2B+ (which has the same board shape but a slightly slower CPU). These two boards account for over half of all Raspberry Pi boards sold. The rest of the sales are between older models. The original Model A accounts for just 2 percent of sales. So keep one if you've got it as they're pretty rare. We should point out, before the Commodore fan club arrives, that there are discrepancies in the total number of sales of the C64. The 12.5 million figure comes from an analysis of serial numbers. This article by Michael Steil explains in detail why the 12.5 million number is accurate. We hold it to be the most accurate analysis of Commodore 64 sales (other opinions are available). -
Raspberry Pi Becomes Third Best-Selling General Purpose Computer of All Time, Beating Commodore 64 (raspberrypi.org)
The Raspberry Pi has outsold the Commodore 64 by selling north of 12.5 million boards in five years, becoming the world's third best-selling general purpose computer. "The Commodore 64, had, until recently, the distinction of being the third most popular general purpose computing platform," Eben Upton told a crowd at the fifth birthday party. "That's what I'm here to celebrate," he said, "we are now the third most popular general purpose computing platform after the Mac and PC." The MagPi Magazine reports: The Raspberry Pi Model 3 is the best-selling Raspberry Pi. This chart shows that Raspberry Pi 3 has accounted for almost a third of all Raspberry Pi boards sold. The Model 3 sits next to its immediate predecessor, the Raspberry Pi 2B+ (which has the same board shape but a slightly slower CPU). These two boards account for over half of all Raspberry Pi boards sold. The rest of the sales are between older models. The original Model A accounts for just 2 percent of sales. So keep one if you've got it as they're pretty rare. We should point out, before the Commodore fan club arrives, that there are discrepancies in the total number of sales of the C64. The 12.5 million figure comes from an analysis of serial numbers. This article by Michael Steil explains in detail why the 12.5 million number is accurate. We hold it to be the most accurate analysis of Commodore 64 sales (other opinions are available). -
New Kit Turns A Raspberry Pi Into A Robot Arm (raspberrypi.org)
An anonymous reader writes: A new kit turns your Raspberry Pi into a robotic arm. It's controlled by an on-board joystick, or even a web browser, and "because it's connected to the Pi you can program it through any of the various programming languages that already run on the Pi," according to its creators. "There's also free software available which lets you program it through a web interface using drag and drop programming environments like Scratch and Blockly or with Python and Javascript for the more experienced."
They explain in a video on Kickstarter that "Our mission is to get children excited about technology through building and programming their own robots," and they've already raised three times their original $12,411 fundraising goal. The Raspberry Pi blog describes it as "a great kit for anyone wanting to step into the world of digital making."
Long-time Slashdot reader bjpirt adds that "It's completely open source and hackable." -
Google Is Partnering With Raspberry Pi To Create AI (zdnet.com)
Google is planning to bring artificial intelligence and machine learning tools to the diminutive Raspberry Pi this year. The Raspberry Pi Foundation said in a statement, "Google is going to arrive in style in 2017. The tech titan has exciting plans for the maker community." ZDNet reports: The advertising-to-cloud-computing giant intends to make a range of smart tools available this year, according to the Foundation. "Google's range of AI and machine learning technology could enable makers to build even more powerful projects," it said. Google has developed a huge range of tools for machine learning, IoT, wearables, robotics, and home automation, and it wants Raspberry Pi fans to fill out a survey that will help it to understand what tools to provide. The survey mentions face- and emotion-recognition and speech-to-text translation, as well as natural language processing and sentiment analysis. "The tech giant also provides powerful technology for navigation, bots, and predictive analytics. The survey will help them get a feel for the Raspberry Pi community, but it'll also help us get the kinds of services we need," said the Foundation. -
Raspberry Pi Upgrades Compute Module With 10 Times the CPU Performance (arstechnica.com)
An anonymous reader quotes a report from Ars Technica: The Raspberry Pi Compute Module is getting a big upgrade, with the same processor used in the recently released Raspberry Pi 3. The Compute Module, which is intended for industrial applications, was first released in April 2014 with the same CPU as the first-generation Raspberry Pi. The upgrade announced today has 1GB of RAM and a Broadcom BCM2837 processor that can run at up to 1.2GHz. "This means it provides twice the RAM and roughly ten times the CPU performance of the original Compute Module," the Raspberry Pi Foundation announcement said. This is the second major version of the Compute Module, but it's being called the "Compute Module 3" to match the last flagship Pi's version number. The new Compute Module has more flexible storage options than the original. "One issue with the [Compute Module 1] was the fixed 4GB of eMMC flash storage," the announcement said. But some users wanted to add their own flash storage. "To solve this, two versions of the [Compute Module 3] are being released: one with 4GB eMMC on-board and a 'Lite' model which requires the user to add their own SD card socket or eMMC flash." The core module is tiny so that it can fit into other hardware, but for development purposes there is a separate I/O board with GPIO, USB and MicroUSB, CSI and DSI ports for camera and display boards, HDMI, and MicroSD. The Compute Module 3 and the lite version cost $30 and $25, respectively. -
Raspberry Pi Zero Gains Camera Support, Keeps $5 Price (engadget.com)
An anonymous reader writes: The Raspberry Pi Zero has received its first major hardware upgrade today: a camera connector. The new addition of a camera connector works well with the two new Sony imaging modules announced last month. The board will retain its $5 price, too. Eben Upton, Raspberry Pi founder, said in a blog post that "through dumb luck, the same fine-pitch FPC connector that we use on the Compute Module Development Kit just fits onto the right hand side of the board." The team was able to close the feature gap between the Zero and larger Pi boards by moving the surface components towards the left, and rotating the activity LEDs. The CSI connector on the Zero is 3.5mm smaller than the adapter on the Pi 3, so you will need to invest in a new cable if you've already invested in a camera module for an existing project. -
Raspberry Pi Zero Gains Camera Support, Keeps $5 Price (engadget.com)
An anonymous reader writes: The Raspberry Pi Zero has received its first major hardware upgrade today: a camera connector. The new addition of a camera connector works well with the two new Sony imaging modules announced last month. The board will retain its $5 price, too. Eben Upton, Raspberry Pi founder, said in a blog post that "through dumb luck, the same fine-pitch FPC connector that we use on the Compute Module Development Kit just fits onto the right hand side of the board." The team was able to close the feature gap between the Zero and larger Pi boards by moving the surface components towards the left, and rotating the activity LEDs. The CSI connector on the Zero is 3.5mm smaller than the adapter on the Pi 3, so you will need to invest in a new cable if you've already invested in a camera module for an existing project. -
Raspbian Linux OS Gets Major Update, Adds Bluetooth Support to Pi 3 (betanews.com)
An anonymous reader writes: The Raspberry Pi 3 was launched with built-in chip for Bluetooth and Wi-Fi support, however, software support for Bluetooth was lacking until now. The drivers were there, but today's update to the Raspbian Linux distribution adds much-needed GUI tools to help you establish Bluetooth connections. Another cool addition is a new backup tool. There are other improvements as well including the mouse settings, and the ability to empty the wastebasket through right-clicking as seen below (yes, seriously). There is even a new shutdown dialog, something even casual users should notice.Official blog post here. -
Amazon's Raspberry Pi Guide Lets Coders Build An Echo (bbc.com)
An anonymous reader quotes a report from BBC: Amazon has published an online guide explaining how to access its virtual assistant Alexa via a Raspberry Pi. The walkthrough includes access to the necessary app data and certificates in order to link the budget computer up to the tech giant's servers. Amazon says that users require at least the second-generation model, released in February 2015, as well as: a plug-in USB microphone, microSD card, ethernet cable, Wi-Fi wireless adapter, mouse, keyboard, and screen. The coding involved is limited to typing in sets of commands, but the guide explains the purpose of each one. Users also need to register for an Amazon Developer Account, which they can get for free. -
Raspberry Pi 3 Rolls Out With Faster CPU, On-Board Wi-Fi, and Bluetooth
An anonymous reader writes: The original Raspberry Pi went on sale four years ago, and more than 8,000,000 units have shipped since then. Raspberry Pi computers are used in schools and universities, in factories and other industrial applications, in home automation and hobby projects, and much more. Today the Raspberry Pi 3 was announced, featuring a 64-bit quad-core ARMv8 CPU clocked at 1.2GHz, making it roughly 10x the speed of the original Pi 1. Many people will be pleased to hear that the Raspberry Pi 3 also features on-board Wi-Fi and Bluetooth, greatly improving the device's connectivity. The new device goes on sale today at the usual price of US $35. (Here's the official announcement itself.) -
Raspberry Pi's Raspbian OS Finally Ships With Open-Source OpenGL Support (phoronix.com)
An anonymous reader writes: With this month's Raspbian OS update, the Debian-based operating system for the Raspberry Pi ships experimental OpenGL driver support. This driver has been developed over the past two years by a former Intel developer with having a completely open and mainline DRM kernel driver and Mesa Gallium driver to open up the Pi as a replacement to the proprietary GPU driver. -
Raspberry Pi Unveils New $5 Mini-computer
An anonymous reader writes: The Raspberry Pi Foundation unveiled the Pi Zero, a new $5 mini-computer, Thursday morning. The board is the smallest Raspberry Pi yet, containing the first-gen Raspberry Pi's BCM2835 chip (safely overclocked to 1GHz) and 512MB RAM. The latest issue of The Magpi will include a free Raspberry Pi Zero and hits U.K. newsstands Thursday. The announcement came just a few days before the highly anticipated C.H.I.P. $9 mini-computer goes on sale to the public. puddingebola writes: How can they achieve this price, you may ask? "Its 40-pin GPIO header has identical pinouts, although the pads on the circuit board are "unpopulated," meaning you'll have to solder on your own connector. The same goes for the composite video output: The connection is available, but if you need a socket, you must solder it yourself." Dude, go to Radio Shack. Some relevant specs besides those mentioned above, from the blog post linked:- Micro-SD card slot
- mini-HDMI socket for 1080p60 video output
- Micro-USB sockets for data and power
- Identical pinout to Model A+/B+/2B
- An unpopulated composite video header
- "Our smallest ever form factor, at 65mm x 30mm x 5mm"
New submitter graffitiwriter adds a note that the newest Pi has "already been turned into a retro gaming console. It turns out the Pi Zero is more than capable of running Retro Pie and other emulators, and even has a video output that lets you play games on an old CRT TV."
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Raspberry Pi Unveils New $5 Mini-computer
An anonymous reader writes: The Raspberry Pi Foundation unveiled the Pi Zero, a new $5 mini-computer, Thursday morning. The board is the smallest Raspberry Pi yet, containing the first-gen Raspberry Pi's BCM2835 chip (safely overclocked to 1GHz) and 512MB RAM. The latest issue of The Magpi will include a free Raspberry Pi Zero and hits U.K. newsstands Thursday. The announcement came just a few days before the highly anticipated C.H.I.P. $9 mini-computer goes on sale to the public. puddingebola writes: How can they achieve this price, you may ask? "Its 40-pin GPIO header has identical pinouts, although the pads on the circuit board are "unpopulated," meaning you'll have to solder on your own connector. The same goes for the composite video output: The connection is available, but if you need a socket, you must solder it yourself." Dude, go to Radio Shack. Some relevant specs besides those mentioned above, from the blog post linked:- Micro-SD card slot
- mini-HDMI socket for 1080p60 video output
- Micro-USB sockets for data and power
- Identical pinout to Model A+/B+/2B
- An unpopulated composite video header
- "Our smallest ever form factor, at 65mm x 30mm x 5mm"
New submitter graffitiwriter adds a note that the newest Pi has "already been turned into a retro gaming console. It turns out the Pi Zero is more than capable of running Retro Pie and other emulators, and even has a video output that lets you play games on an old CRT TV."
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Ditch Linux For Windows 10 On Your Raspberry Pi With Microsoft's IoT Kit
An anonymous reader writes: Partnering with Adafruit, Microsoft has announced the Windows IoT Core Starter Kit. The $75 kit comes comes with an SD card preloaded with Windows 10 IoT. According to the Raspberry Pi blog: "The pack is available with a Pi 2 for people who are are new to Raspberry Pi or who'd like a dedicated device for their projects, or without one for those who'll be using a Pi they already own. The box contains an SD card with Windows 10 Core and a case, power supply, wifi module and Ethernet cable for your Pi; a breadboard, jumper wires and components including LEDs, potentiometers and switches; and sensors for light, colour, temperature and pressure. There's everything you need to start building." -
Raspberry Pi Touch Screen Released
An anonymous reader writes: The Raspberry Pi has been enormously successful, but one frequent request has been for the Foundation to create a simple touchscreen to go along with it. Gordon Hollingworth said, "I honestly believed it would only take us six months from start to end, but there were a number of issues we met (and other products diverted our attention from the display – like Rev 2.1, B+, A+, and Pi 2)." Now, after two years of development, they've launched a 7", 800x480 LCD that runs at 60 fps. The capacitive screen supports 10 simultaneous finger touches and has a 70 degree viewing angle. The Raspberry Pi Foundation's blog post provides some interesting technical background on electromagnetic compliance and how to connect and use the display. -
Xenon Flashes Can Make New Raspberry Pi 2 Freeze and Reboot
An anonymous reader writes Unfortunately for Raspberry Pi 2 owners who are trying to photograph their devices, ... the Raspberry Pi 2 has been found to be Xenon flash sensitive. Any camera with a Xenon flash aimed at the device is causing the device to freeze for a few seconds before rebooting. The forum thread about the bug is an interesting play-by-play of how the problem was narrowed down. -
Slashdot Asks: The Beanies Return; Who Deserves Recognition for 2014?
It's been a long time since Slashdot has awarded the Beanies -- nearly 15 years, in fact. But there's no time like the present, especially since tomorrow edges on the new year, and in early 2015 we'd like to offer a Beanie once again, to recognize and honor your favorite person, people (or project; keep reading) of the past year. Rather than a fine-grained list of categories like in 2000, though, this time around we're keeping it simple: we can always complicate things later, if warranted. So, please nominate below whoever you think most deserves kudos for the last twelve months. Is it ...- Edward Snowden, for the impact his leaks (though they began in 2013) have continued to make? (Or William Binney, for similar reasons?)
- Nobel Peace Prize winner Malala Yousafzay, who fought a difficult battle for children's right to an education?
- Telescope popularizer John Dobson, who died earlier this year at the age of 98, after bringing space a little more down to earth for many thousands of people?
- May-Britt Moser, her husband Edvard Moser, and John O'Keefe for their discoveries about how the brain navigates through the world?
- Eben Upton, whose little educational hardware project has bloomed into millions and millions of cheap, hackable Linux computers?
- How about Maryam Mirazkhani, the first woman to become a Fields medalist?
- Theo de Raadt, who stepped in with replacement project LibreSSL soon after cracks appeared in OpenSSL, and who's been helming the OpenBSD project since 1995?
- The ESA team that landed a probe on a comet, or the ISRO engineers who managed to send a probe to Mars on a shoestring budget?
- Anita Sarkeesian, for helping draw attention to undue harassment faced by women in the video game world?
- Someone relatively quiet or obscure who's nonetheless made the world better through some kind of interesting innovation or contribution?
Read on below to see how you can take part, and then nominate your favorite in the comments below.
A few guidelines to make this work:- Please use the title of your post well; in the form "Name: Description of why they're deserving." (Example: "Harold Ramis: Goodbye, and thanks for all the laughs.") That way, your title can help organize the discussion, and will be easy to scan for. (That's how we'll look to credit the first one to suggest a candidate, as well.)
- Speaking of which: please scan the other suggestions first; if you find there one you'd like to argue for or against, better to do it there, rather than start a new thread.
- Please name an actual person, or a specific group of people, so we can send your choice -- or a representative, as appropriate -- some kind of token (to wit, a beanie). But be as creative as you want: the names listed above are just starting points.
- Explain why your choice deserves to be lauded, with links and words; underrated heroes are welcome. If there's a relevant Slashdot story to link to, so much the better, but it's no requirement. Make it clear why your favorite deserves recognition for 2014, even if it's for contributions that started longer ago. Feel free to nominate yourself, but the same guidelines apply.
- Accentuate the positive. We figure beanies sent to Keith Alexander, John Brennan, or Kim Jong Un won't get worn very often. Maybe there can be some anti-Beanies down the road, but for now, name the good guys, of whatever variety.
- You need not be logged in to take part -- anonymous entries are welcome. However, because of comment thresholds, among other reasons, logged in comments may carry more weight.
We'll winnow down the suggestions below into a short list for further consideration -- and perhaps toss in a few more options to boot -- and aim to come up with a deserving new Beanie recipient (possibly more than one) before the first new moon of 2015.
Submit away. -
Raspberry Pi Gets a Brand New Browser
sfcrazy writes The Raspberry Pi team has announced a new browser for Raspberry Pi. They had worked with Collabora to create an HTML5-capable, modern browser for Pi users. While announcing the new browser, Eben Upton said, "Eight months and a lot of hard work later, we're finally ready. Epiphany on Pi is now a plausible alternative to a desktop browser for all but the most JavaScript-heavy sites." -
Update: Raspberry Pi-Compatible Development Board Cancelled
An anonymous reader writes "Anyone who might have been interested in the miniature Raspberry Pi compatible board mentioned here a month ago should know the board has been cancelled due to problems sourcing the Broadcom SoC. Given the less than welcoming response from the rpi community to the board's release, there is speculation as to why Hardkernel is having trouble buying the chip. -
Update: Raspberry Pi-Compatible Development Board Cancelled
An anonymous reader writes "Anyone who might have been interested in the miniature Raspberry Pi compatible board mentioned here a month ago should know the board has been cancelled due to problems sourcing the Broadcom SoC. Given the less than welcoming response from the rpi community to the board's release, there is speculation as to why Hardkernel is having trouble buying the chip. -
New Raspberry Pi Model B+
mikejuk writes The Raspberry Pi foundation has just announced the Raspberry Pi B+. The basic specs haven't changed much — same BC2835 and 512MB of RAM and the $35 price tag. There are now four USB ports, which means you don't need a hub to work with a mouse, keyboard and WiFi dongle. The GPIO has been expanded to 40 pins, but don't worry: you can plug your old boards and cables into the lefthand part of the connector, and it's backward compatible. As well as some additional general purpose lines, there are two designated for use with I2C EEPROM. When the Pi boots it will look for custom EEPROMs on these lines and optionally use them to load Linux drivers or setup expansion boards. Expansion boards can now include identity chips that when the board is connected configures the Pi to make use of them — no more manual customization. The change to a micro SD socket is nice, unless you happen to have lots of spare full size SD cards around. It is also claimed that the power requirements have dropped by half, to one watt, which brings the model B into the same power consumption area as the model A. Comp video is now available on the audio jack, and the audio quality has been improved. One big step for Raspberry Pi is that it now has four holes for mounting in standard enclosures. -
Raspberry Pi Compute Module Release
First time accepted submitter ControlsGeek (156589) writes "The Raspberry Pi Foundation has developed a new product. It is basically a Raspberry Pi model A processor, memory, and flash memory on a DDR2-style SODIMM connector. Also available will be a development board that breaks out all the internal connections. The board design will be open sourced so you can develop your own devices using the BCM2835 processor. No network, but support for 2 HDMI displays and 2 cameras, so 3D TV is a possibility. -
Broadcom Releases Source For Graphics Stack; Raspberry Pi Sets Bounty For Port
One of the few but lingering complaints about the Raspberry Pi is that it relies on a proprietary GPU blob for communication between the graphics drivers and the hardware. Today, Broadcom released the full source for the OpenGL ES 1.1 and 2.0 driver stack for the Broadcom VideoCore IV 3D graphics subsystem running on one of its popular cellphone systems-on-a-chip. It's available under a BSD license, and Broadcom provided documentation for the graphics core as well. The SoC in question is similar to the one used on the Raspberry Pi, and Eben Upton says making a port should be 'relatively straightforward.' The Raspberry Pi Foundation has offered a $10,000 bounty for the first person who can demonstrate a functional port. (The test for functionality is, of course, being able to run Quake III Arena.) Upton says, 'This isn't the end of the road for us: there are still significant parts of the multimedia hardware on BCM2835 which are only accessible via the blob. But we're incredibly proud that VideoCore IV is the first publicly documented mobile graphics core, and hope this is the first step towards a blob-free future for Raspberry Pi.' Side note: the RPi is now two years old, and has sold 2.5 million units. -
Plan 9 From Bell Labs Operating System Now Available Under GPLv2
TopSpin writes "Alcatel-Lucent has authorized The University of California, Berkeley to 'release all Plan 9 software previously governed by the Lucent Public License, Version 1.02 under the GNU General Public License, Version 2.' Plan 9 was developed primarily for research purposes as the successor to Unix by the Computing Sciences Research Center at Bell Labs between the mid-1980s and 2002. Plan 9 has subsequently emerged as Inferno, a commercially supported derivative, and ports to various platforms, including a recent port to the Raspberry Pi. In Plan 9, all system interfaces, including those required for networking and the user interface, are represented through the file system rather than specialized interfaces. The system provides a generic protocol, 9P, to perform all communication with the system, among processes and with network resources. Applications compose resources using union file systems to form isolated namespaces." -
Raspberry Pi Hits the 2 Million Mark
The Raspberry Pi project that we've been fans of for quite a while now has hit a new milestone: Today, they announced that as of the last week in October, the project has sold more than two million boards. Raspberry Pi is anything but alone in the tiny, hackable computer world (all kinds of other options, from Arduino to the x86-based Minnowboard, are out there, and all have their selling points), but the low price, open-source emphasis, and focus on education have all helped the Pi catch on. If yours is one of these 2 million, what are you using it for? (And if you favor some other small system for your own experiments, what factors matter?) -
Vastly Improved Raspberry Pi Performance With Wayland
New submitter nekohayo writes "While Wayland/Weston 1.1 brought support to the Raspberry Pi merely a month ago, work has recently been done to bring true hardware-accelerated compositing capabilities to the RPi's graphics stack using Weston. The Raspberry Pi foundation has made an announcement about the work that has been done with Collabora to make this happen. X.org/Wayland developer Daniel Stone has written a blog post about this, including a video demonstrating the improved reactivity and performance. Developer Pekka Paalanen also provided additional technical details about the implementation." Rather than using the OpenGL ES hardware, the new compositor implementation uses the SoC's 2D scaler/compositing hardware which offers "a scaling throughput of 500 megapixels per second and blending throughput of 1 gigapixel per second. It runs independently of the OpenGL ES hardware, so we can continue to render 3D graphics at the full, very fast rate, even while compositing." -
Review: Make: Raspberry Pi Starter Kit
XWWT writes "A few weeks ago Make offered to send us a sample of its Raspberry Pi Starter Kit to see if we would do a review of the product. Samzenpus asked around the engineering team to see if there was someone who would be willing to do an on-camera review of the device. With all of the buzz about Raspberry Pi, I was very excited to get hands-on time with the device so I could more closely examine the platform. At first we wanted to do this piece as a video but quickly realized that a) it would probably be boring to see some blinky lights and push buttons working on a sample project, and b) the amount of audio that would need to be bleeped to cover my frustration with parts of the kit would be annoying. On a personal note, I also wanted to document all of my experience here as I thought it would be beneficial for newcomers to the maker technology and sometimes having someone else’s experience documented can help you avoid pitfalls and mistakes. (Full Disclosure: I am the Director of Engineering for Slashdot Media. We were given a review copy of the Make: Raspberry Pi Starter Kit. We were not paid for this review but had fun doing it.)" Keep reading for the rest of Wes's review. Unpacking the Box:
The box was nicely packaged with lots of little pieces parts in baggies and was well assembled. I immediately pulled out the Pi board and all of the packaged elements to see what was included. It became apparent that the shipping box would be useless to keep all the parts together once I unpacked it and found an old small plastic tool box to keep the parts in for future use and transport.
Included in the box was the 512MB Pi unit, 1A USB charger (underpowered for big projects), Pi Cobbler kit, Pi enclosure, 4GB Class 4 SDHC card, breadboard, a trimmed down version of the Medtronics kit, short HDMI cable, jumper wires (male) and the Getting Started with Raspberry Pi book. They seemed to be packed well as subassemblies so I tried to keep them together as such until later so I wouldn’t lose or mix parts.
The Medtronics kit had LEDs, resistors, capacitors, diodes, pushbuttons, switches, jumpers and some timer chips; all fun toys. Basically it is a collection that anyone doing electronics work would need in order to do a handful of projects. Most of these parts are cheap when bought in bulk, but getting variety collections like this tend to be expensive as you are buying only a couple of parts so it was nice to see them included. I was disappointed that I didn’t see any male-to-female jumpers in the box as these are useful in connecting pins but realized that was the point of the Pi Cobbler Kit.
After I had looked over the board itself, I thought it best to actually try to follow instructions since I was supposed to review the kit. I opened the included Getting Started with Raspberry Pi book and reviewed the first two chapters to get an idea of what was actually on-board the Pi itself and to see how the “Getting Started” would work for a first timer. Typically I find that getting started books from Make try to appear like How-To manuals blended with a lab book and they don’t do well being either. That was certainly the case with this book as I progressed.
The first chapter was really helpful as it laid out what the main components were on the board and what the actual available processing power. The board is an ARM11, 32bit, 700MHz processor. We happened to get the B version so it has 512MB of available RAM. The physical size of the board is a little larger than a stack of credit cards, with all of the components it is about the total size of a mans pocket wallet (about 3”x2”x1/2”). I examined the physical joints on the board and all were machine done (expected) and seemed to be in good order. The first problem I noticed though was that the joints for the HDMI and Audio/Video jacks would not be sufficient to keep them from being broken off the board. Additionally the joints holding the power unit seemed shaky if the unit were plugged in/out too frequently (the book and blogs confirmed that suspicion). The Ethernet port on the board seemed to be in good shape as did the GPIO and Display and Camera Serial Interfaces.
I was pleased to see that there were some status LEDs on-board for simple debugging. Those of us that are used to solving boot problems with status indicators like LEDs or audible tones know that these are important when you just can’t get a board to respond.
I then examined the enclosure case assembly which still had the protective wrapping on it and stunk of cutting fluid. There were no instructions on assembly for that so I set it aside. There seemed to be small parts in that package and I didn’t want to lose them, so I left it sealed.
Setting up Raspbian:
I wanted to validate quickly that there were no problems with the board so I ran through the steps of flashing the SD card with a copy of Raspbian. I actually tried both the dd tool installation under UNIX and the Win32DiskImager to see if there were significant differences in the experience. While the dd process seemed straight-forward the Win32DiskImage was just as easy. I found the documentation here to be the simplest to follow. Some might argue that having a pre-loaded SD card would have been best but I think the point of doing this yourself helps you to better learn the process and get more comfortable with the device.
I then plugged in the HDMI cable to the Pi and dug up a USB mouse and keyboard. Next, I plugged in the USB power supply and SD card. Immediately I made a note to use a powered USB port next time as it would reduce the number of times I would have to torque the onboard USB ports. When I went to plug the HDMI into my monitor I realized that I only had DVI ports and had to scrounge around in my toolbox for a HDMI to DVI converter. (DVI converters are inexpensive and would have been a nice addition to the kit.) I also made a mental note at this point to DX the 1.5m HDMI cable for something longer. I put the board on a non-reactive surface (notebook) so the contacts would not short and then booted the device. I followed all of the default options laid out in the Getting Started book just to make it simple. All-in-all the experience in booting and setting up Raspbian for the first time was satisfying.
Make: Pi Enclosure:
When I first looked at the Pi Enclosure it was pretty easy to see how it was supposed to go together. What I didn’t realize was the amount of swearing it would take to actually get it done. There are only nine parts in the V1 assembly and it should be easy to do, but without instructions it might as well have had a million parts. There is a delicate balance between each of the parts and the tolerance is very low compared to the profile of the board. You also need to torque the enclosure parts to get them to fit together while balancing the assembly in one hand and not drop the Pi. Not at all optimal. In the end I broke a connector slot on the enclosure which required a little superglue to fix. Once I had the board in the enclosure I realized that the opening for the power port was off enough that it would require modification to accept the USB power cord. After taking the enclosure apart I used a project file to widen a couple of the openings (power, GPIO) and tried again, this time adding in the 26 pin ribbon for the Cobbler kit knowing I didn’t want to have to take this apart again just to add that in later. It was even more difficult to put the pieces together with the ribbon cable, but I got it to work. (BTW: Make sure colored ribbon is on pin 1 which is on the same end as the Pi power port.). The how-to for assembling the enclosure here seems to work fine, but doesn’t account for adding the ribbon cable. (I looked over the V2 of this box which uses bolts and nuts to hold together and I see there are problems with how you hold the nuts in place for assembly. I can only imagine the frustration with that version and the number of times nuts are dropped into the box only to have to open it and retrieve them to try again.) Better option: Make your own project box out of LEGOs.
Ada Fruit Cobbler Kit:
Basically the Ada Fruit Cobbler Kit is a simple device to connect the GPIO of the Pi to a breadboard making experimentation a little easier. The kit includes a PCB, socket, 26 pin ribbon and header pins. Assembly was pretty straightforward except for separation of the header pins. My kit came with the header pins in one stick with about 36 pins. You only need 26 (2x13) so breaking this down, while simple, still takes some care. I should have used jewelry pliers or side cutters which would have made sure I didn’t break it into 12, 13 and the balance. Adding back in one header pin is never fun and I should have known better.
Soldering was simple. First I soldered the socket to the PCB so I was working from the inside joints to the outside joints. Turning the assembly upside down worked well for this and my iron was still at a good temperature. I started from one end and worked my way down each set of pins, checked the joints and cleaned up one or two that were messy. Next I placed the 12 and 13 pins into a breadboard, set the PCB on that and worked from the middle pins out and then added the lone pin back in. (2x13 sticks would have made this much easier.) The header pin plastic melted a little because I was being aggressive, but a few tweaks and I was able level the socket with the pins so it didn’t look like my youngest child completed the work. It would have been a better experience if I had a soldering iron with temperature adjustment, smaller soldering tip and smaller diameter solder. My desolder tool helped when I found I had to reset a head pin that I accidentally pushed on with my iron.
I think assembly of the Ada Fruit Cobbler kit will be the most intimidating part of the kit for someone new to electronics. The kit calls out that you will need soldering skills and this is as basic a soldering job as you can get, but still some might shy away from it. I understand that more recent versions actually have the kit pre-assembled for those who don’t want to solder.
Good assembly instructions can be found here.
Working with the OS:
The Raspian OS is Lightweight X11 (LXDE) with Openbox. For non-Linux users this may seem a little scary but there is a whole body of work around this and outside of the scope of this review.
Configuring and setting up the OS on my home network was typical for a Linux install. I wish I had a wireless USB though so I didn’t need to rely on the Ethernet adapter and fear of having a cable pulled and dropping the device. Connectivity completed, I wanted to play with some programming on the device.
I was happy to see Python and IDLE in the install as it made writing a simple program to tinker with the system easy. Additional modules can be downloaded and installed easily. Sample programs are easy to find or write and are typical. At this point I had a working Linux desktop computer, the size of my wallet, connected to my network and a breadboard for experimenting with IO.
I have yet to run this headless but will do so at some point.
Working with IO:
After I completed the assembly items and tinkering, I picked out a project for the breakout board to see if there was something cool that I could show. I worked on the first simple IO example in the book and quickly found that the documentation is really poor for a first-timer.
The first example of GPIO work in the Getting Started book lays out that you should use male-to-female adapters, then promptly tells you that the Pi Cobbler makes it easier to experiment and then continues the experiment with mtf adapters, which aren’t included in the kit. It tries to compensate for this by using a really bad drawing of the GPIO pins that aren’t completely labeled and have caveats about versions of the board. So before wiring the board I had to do a little investigation about the version of the board which you can tell only by booting the device (a nice stamp on the board would have been nice). Fortunately I have a version 2 board making the wiring a little easier to follow. (More information on Pin IO can be found here.) I checked for errata on the book to see if some of it has been sorted out but didn’t see this addressed at the time I was setting the project up.
Note on IO projects: You should really make sure you have your circuits setup and buffered when working with external experiments. It is also important to understand how a breadboard works and which terminals are tied out. Basically if you aren’t careful and paying attention you can accidentally feed power back to your Pi and end up blowing it out. (Mixing the 3V3 and 5V will do that in an instant.) For a $35 board that isn’t too expensive of a lesson, but would probably cause a newbie to be quickly discouraged.
The ‘Hello World’ examples in the Getting Started for IO include lighting an LED and reading from a pushbutton. The setup for these circuits is pretty simple but the author of the experiment doesn’t explain well how the powerbus works on the breadboard which could easily lead to a project discouragement. Additionally, the diagrams are set for mtf jumpers so matching that to the Cobbler kit and making sure you get the correct pins there can be a problem. Reading IO in the samples was easy and was simply a matter of running as su and setting the direction of the pin and then echo or cat the value to set/read its state.
Other sample projects assume you have a PowerSwitch tail relay sitting around, which I don’t, so turning off an external device (table lamp) was out of the question in my first couple of experiments. I would have been nice to see either all of the experiments focused at what was in the kit, or to include all of the items needed for the experiments in the kit.
I tinkered with GPIO and Python to automate some of the work and it was all quite simple to do. Samples in the Getting Started were fine but as with most programming examples, there were some small typos.
I think for someone coming to this the first time the experiments in the book are pretty simple but assume some experience with electronics. For new electronics users I would recommend a copy of Make: Electronics as it does a good job of laying out Electricity 101 in straightforward terms. You will also want to start assembling some other break out tools which can be easily had from lots of sources.
I picked up a copy of Raspberry Pi Users Guide by Upton and Halfacree for more project ideas in the future and look forward to reading and working those projects. I also ended up getting a couple of other books about the Raspberry Pi to see what they have in them and will likely do a book review at some point about their content.
General Observations:
For $35 the Pi is a great buy but the problem is finding the companies who are selling it for that price; Make sells theirs for $50. The added project items needed in this kit seem to be a little pricy, causing the overall price to get it up to the $130 range. Ada Fruit Cobbler kits are running $8, Pi enclosures are running $15, USB chargers run about $7, 4GB cards run about $6, solderless breadboards about $15 and probably $10 for the extra parts in the box, $10 or so for the book. If you are already doing electronics hobby work, I would find a different sourced board and skip the extras here. If you are new and want to give this a try or want to one-stop the parts, then buy the kit.
There is a great deal of an IKEA effect by having you participate in the assembly and feel like you just made something cool. It was largely fun putting the parts together and I am thinking about project applications almost daily. One of our developers belongs to a racing club and we were thinking that these would be a cheap means of tracking and relaying car speed/vitals to a central unit. I am also curious to see if these would be a better solution for tracking car performance for those into hypermiling. In any case, I plan on trying a number of projects and continue to develop with the board.
Lessons Learned:- A) Find a project box or assemble one of the nice Lego Pi Enclosures described out on the Internet. The project enclosure in the kit is fragile and difficult to assemble. There is a nice example made by a German Scout named Biz and can be found here. Or, if you are clever, you can make something bigger and better. As there is no heat-sink on board, I would avoid enclosures with a lid so you can vent any thermal from the board.
- B) The enclosed book is ok, but there are other resources that were more valuable in the setup.
- C) Get a powered USB device to control your mouse/keyboard, etc. There are only a couple of open slots on the Pi.
- D) An HDMI to DVI adapter is helpful.
- E) Get a longer HDMI cable to make this practical for experimenting.
-
Review: Make: Raspberry Pi Starter Kit
XWWT writes "A few weeks ago Make offered to send us a sample of its Raspberry Pi Starter Kit to see if we would do a review of the product. Samzenpus asked around the engineering team to see if there was someone who would be willing to do an on-camera review of the device. With all of the buzz about Raspberry Pi, I was very excited to get hands-on time with the device so I could more closely examine the platform. At first we wanted to do this piece as a video but quickly realized that a) it would probably be boring to see some blinky lights and push buttons working on a sample project, and b) the amount of audio that would need to be bleeped to cover my frustration with parts of the kit would be annoying. On a personal note, I also wanted to document all of my experience here as I thought it would be beneficial for newcomers to the maker technology and sometimes having someone else’s experience documented can help you avoid pitfalls and mistakes. (Full Disclosure: I am the Director of Engineering for Slashdot Media. We were given a review copy of the Make: Raspberry Pi Starter Kit. We were not paid for this review but had fun doing it.)" Keep reading for the rest of Wes's review. Unpacking the Box:
The box was nicely packaged with lots of little pieces parts in baggies and was well assembled. I immediately pulled out the Pi board and all of the packaged elements to see what was included. It became apparent that the shipping box would be useless to keep all the parts together once I unpacked it and found an old small plastic tool box to keep the parts in for future use and transport.
Included in the box was the 512MB Pi unit, 1A USB charger (underpowered for big projects), Pi Cobbler kit, Pi enclosure, 4GB Class 4 SDHC card, breadboard, a trimmed down version of the Medtronics kit, short HDMI cable, jumper wires (male) and the Getting Started with Raspberry Pi book. They seemed to be packed well as subassemblies so I tried to keep them together as such until later so I wouldn’t lose or mix parts.
The Medtronics kit had LEDs, resistors, capacitors, diodes, pushbuttons, switches, jumpers and some timer chips; all fun toys. Basically it is a collection that anyone doing electronics work would need in order to do a handful of projects. Most of these parts are cheap when bought in bulk, but getting variety collections like this tend to be expensive as you are buying only a couple of parts so it was nice to see them included. I was disappointed that I didn’t see any male-to-female jumpers in the box as these are useful in connecting pins but realized that was the point of the Pi Cobbler Kit.
After I had looked over the board itself, I thought it best to actually try to follow instructions since I was supposed to review the kit. I opened the included Getting Started with Raspberry Pi book and reviewed the first two chapters to get an idea of what was actually on-board the Pi itself and to see how the “Getting Started” would work for a first timer. Typically I find that getting started books from Make try to appear like How-To manuals blended with a lab book and they don’t do well being either. That was certainly the case with this book as I progressed.
The first chapter was really helpful as it laid out what the main components were on the board and what the actual available processing power. The board is an ARM11, 32bit, 700MHz processor. We happened to get the B version so it has 512MB of available RAM. The physical size of the board is a little larger than a stack of credit cards, with all of the components it is about the total size of a mans pocket wallet (about 3”x2”x1/2”). I examined the physical joints on the board and all were machine done (expected) and seemed to be in good order. The first problem I noticed though was that the joints for the HDMI and Audio/Video jacks would not be sufficient to keep them from being broken off the board. Additionally the joints holding the power unit seemed shaky if the unit were plugged in/out too frequently (the book and blogs confirmed that suspicion). The Ethernet port on the board seemed to be in good shape as did the GPIO and Display and Camera Serial Interfaces.
I was pleased to see that there were some status LEDs on-board for simple debugging. Those of us that are used to solving boot problems with status indicators like LEDs or audible tones know that these are important when you just can’t get a board to respond.
I then examined the enclosure case assembly which still had the protective wrapping on it and stunk of cutting fluid. There were no instructions on assembly for that so I set it aside. There seemed to be small parts in that package and I didn’t want to lose them, so I left it sealed.
Setting up Raspbian:
I wanted to validate quickly that there were no problems with the board so I ran through the steps of flashing the SD card with a copy of Raspbian. I actually tried both the dd tool installation under UNIX and the Win32DiskImager to see if there were significant differences in the experience. While the dd process seemed straight-forward the Win32DiskImage was just as easy. I found the documentation here to be the simplest to follow. Some might argue that having a pre-loaded SD card would have been best but I think the point of doing this yourself helps you to better learn the process and get more comfortable with the device.
I then plugged in the HDMI cable to the Pi and dug up a USB mouse and keyboard. Next, I plugged in the USB power supply and SD card. Immediately I made a note to use a powered USB port next time as it would reduce the number of times I would have to torque the onboard USB ports. When I went to plug the HDMI into my monitor I realized that I only had DVI ports and had to scrounge around in my toolbox for a HDMI to DVI converter. (DVI converters are inexpensive and would have been a nice addition to the kit.) I also made a mental note at this point to DX the 1.5m HDMI cable for something longer. I put the board on a non-reactive surface (notebook) so the contacts would not short and then booted the device. I followed all of the default options laid out in the Getting Started book just to make it simple. All-in-all the experience in booting and setting up Raspbian for the first time was satisfying.
Make: Pi Enclosure:
When I first looked at the Pi Enclosure it was pretty easy to see how it was supposed to go together. What I didn’t realize was the amount of swearing it would take to actually get it done. There are only nine parts in the V1 assembly and it should be easy to do, but without instructions it might as well have had a million parts. There is a delicate balance between each of the parts and the tolerance is very low compared to the profile of the board. You also need to torque the enclosure parts to get them to fit together while balancing the assembly in one hand and not drop the Pi. Not at all optimal. In the end I broke a connector slot on the enclosure which required a little superglue to fix. Once I had the board in the enclosure I realized that the opening for the power port was off enough that it would require modification to accept the USB power cord. After taking the enclosure apart I used a project file to widen a couple of the openings (power, GPIO) and tried again, this time adding in the 26 pin ribbon for the Cobbler kit knowing I didn’t want to have to take this apart again just to add that in later. It was even more difficult to put the pieces together with the ribbon cable, but I got it to work. (BTW: Make sure colored ribbon is on pin 1 which is on the same end as the Pi power port.). The how-to for assembling the enclosure here seems to work fine, but doesn’t account for adding the ribbon cable. (I looked over the V2 of this box which uses bolts and nuts to hold together and I see there are problems with how you hold the nuts in place for assembly. I can only imagine the frustration with that version and the number of times nuts are dropped into the box only to have to open it and retrieve them to try again.) Better option: Make your own project box out of LEGOs.
Ada Fruit Cobbler Kit:
Basically the Ada Fruit Cobbler Kit is a simple device to connect the GPIO of the Pi to a breadboard making experimentation a little easier. The kit includes a PCB, socket, 26 pin ribbon and header pins. Assembly was pretty straightforward except for separation of the header pins. My kit came with the header pins in one stick with about 36 pins. You only need 26 (2x13) so breaking this down, while simple, still takes some care. I should have used jewelry pliers or side cutters which would have made sure I didn’t break it into 12, 13 and the balance. Adding back in one header pin is never fun and I should have known better.
Soldering was simple. First I soldered the socket to the PCB so I was working from the inside joints to the outside joints. Turning the assembly upside down worked well for this and my iron was still at a good temperature. I started from one end and worked my way down each set of pins, checked the joints and cleaned up one or two that were messy. Next I placed the 12 and 13 pins into a breadboard, set the PCB on that and worked from the middle pins out and then added the lone pin back in. (2x13 sticks would have made this much easier.) The header pin plastic melted a little because I was being aggressive, but a few tweaks and I was able level the socket with the pins so it didn’t look like my youngest child completed the work. It would have been a better experience if I had a soldering iron with temperature adjustment, smaller soldering tip and smaller diameter solder. My desolder tool helped when I found I had to reset a head pin that I accidentally pushed on with my iron.
I think assembly of the Ada Fruit Cobbler kit will be the most intimidating part of the kit for someone new to electronics. The kit calls out that you will need soldering skills and this is as basic a soldering job as you can get, but still some might shy away from it. I understand that more recent versions actually have the kit pre-assembled for those who don’t want to solder.
Good assembly instructions can be found here.
Working with the OS:
The Raspian OS is Lightweight X11 (LXDE) with Openbox. For non-Linux users this may seem a little scary but there is a whole body of work around this and outside of the scope of this review.
Configuring and setting up the OS on my home network was typical for a Linux install. I wish I had a wireless USB though so I didn’t need to rely on the Ethernet adapter and fear of having a cable pulled and dropping the device. Connectivity completed, I wanted to play with some programming on the device.
I was happy to see Python and IDLE in the install as it made writing a simple program to tinker with the system easy. Additional modules can be downloaded and installed easily. Sample programs are easy to find or write and are typical. At this point I had a working Linux desktop computer, the size of my wallet, connected to my network and a breadboard for experimenting with IO.
I have yet to run this headless but will do so at some point.
Working with IO:
After I completed the assembly items and tinkering, I picked out a project for the breakout board to see if there was something cool that I could show. I worked on the first simple IO example in the book and quickly found that the documentation is really poor for a first-timer.
The first example of GPIO work in the Getting Started book lays out that you should use male-to-female adapters, then promptly tells you that the Pi Cobbler makes it easier to experiment and then continues the experiment with mtf adapters, which aren’t included in the kit. It tries to compensate for this by using a really bad drawing of the GPIO pins that aren’t completely labeled and have caveats about versions of the board. So before wiring the board I had to do a little investigation about the version of the board which you can tell only by booting the device (a nice stamp on the board would have been nice). Fortunately I have a version 2 board making the wiring a little easier to follow. (More information on Pin IO can be found here.) I checked for errata on the book to see if some of it has been sorted out but didn’t see this addressed at the time I was setting the project up.
Note on IO projects: You should really make sure you have your circuits setup and buffered when working with external experiments. It is also important to understand how a breadboard works and which terminals are tied out. Basically if you aren’t careful and paying attention you can accidentally feed power back to your Pi and end up blowing it out. (Mixing the 3V3 and 5V will do that in an instant.) For a $35 board that isn’t too expensive of a lesson, but would probably cause a newbie to be quickly discouraged.
The ‘Hello World’ examples in the Getting Started for IO include lighting an LED and reading from a pushbutton. The setup for these circuits is pretty simple but the author of the experiment doesn’t explain well how the powerbus works on the breadboard which could easily lead to a project discouragement. Additionally, the diagrams are set for mtf jumpers so matching that to the Cobbler kit and making sure you get the correct pins there can be a problem. Reading IO in the samples was easy and was simply a matter of running as su and setting the direction of the pin and then echo or cat the value to set/read its state.
Other sample projects assume you have a PowerSwitch tail relay sitting around, which I don’t, so turning off an external device (table lamp) was out of the question in my first couple of experiments. I would have been nice to see either all of the experiments focused at what was in the kit, or to include all of the items needed for the experiments in the kit.
I tinkered with GPIO and Python to automate some of the work and it was all quite simple to do. Samples in the Getting Started were fine but as with most programming examples, there were some small typos.
I think for someone coming to this the first time the experiments in the book are pretty simple but assume some experience with electronics. For new electronics users I would recommend a copy of Make: Electronics as it does a good job of laying out Electricity 101 in straightforward terms. You will also want to start assembling some other break out tools which can be easily had from lots of sources.
I picked up a copy of Raspberry Pi Users Guide by Upton and Halfacree for more project ideas in the future and look forward to reading and working those projects. I also ended up getting a couple of other books about the Raspberry Pi to see what they have in them and will likely do a book review at some point about their content.
General Observations:
For $35 the Pi is a great buy but the problem is finding the companies who are selling it for that price; Make sells theirs for $50. The added project items needed in this kit seem to be a little pricy, causing the overall price to get it up to the $130 range. Ada Fruit Cobbler kits are running $8, Pi enclosures are running $15, USB chargers run about $7, 4GB cards run about $6, solderless breadboards about $15 and probably $10 for the extra parts in the box, $10 or so for the book. If you are already doing electronics hobby work, I would find a different sourced board and skip the extras here. If you are new and want to give this a try or want to one-stop the parts, then buy the kit.
There is a great deal of an IKEA effect by having you participate in the assembly and feel like you just made something cool. It was largely fun putting the parts together and I am thinking about project applications almost daily. One of our developers belongs to a racing club and we were thinking that these would be a cheap means of tracking and relaying car speed/vitals to a central unit. I am also curious to see if these would be a better solution for tracking car performance for those into hypermiling. In any case, I plan on trying a number of projects and continue to develop with the board.
Lessons Learned:- A) Find a project box or assemble one of the nice Lego Pi Enclosures described out on the Internet. The project enclosure in the kit is fragile and difficult to assemble. There is a nice example made by a German Scout named Biz and can be found here. Or, if you are clever, you can make something bigger and better. As there is no heat-sink on board, I would avoid enclosures with a lid so you can vent any thermal from the board.
- B) The enclosed book is ok, but there are other resources that were more valuable in the setup.
- C) Get a powered USB device to control your mouse/keyboard, etc. There are only a couple of open slots on the Pi.
- D) An HDMI to DVI adapter is helpful.
- E) Get a longer HDMI cable to make this practical for experimenting.
-
Kali Linux, Successor of the BackTrack Penetration Testing Distro, Launched
mask.of.sanity writes "Kali, the sixth installment of the BackTrack operating system has been launched. The platform is a favorite of hackers and penetration testers and has been entirely rebuilt to become more secure, transparent and customizable. Metasploit too has been rebuilt to be more stable with an optional noob-friendly interface. Kali even works on ARM devices and comes ready to go for your Raspberry Pi." The big new feature is that it's been repackaged as a flavor of Debian, instead of using their own custom packaging magic. -
Google Gives 15,000 Raspberry Pis To UK Schools
Grench writes "Search giant Google is providing funding to the Raspberry Pi Foundation to give 15,000 new Raspberry Pi Model B computers to schools all around the United Kingdom. Google Giving's partnership with the Raspberry Pi Foundation is a significant investment in UK IT education; it is hoped this will help turn around the decline in UK schoolkids going on to study IT in colleges or universities. The Foundation said, 'CoderDojo, Code Club, Computing at Schools, Generating Genius, Teach First and OCR will each be helping us identify those kids, and will also be helping us work with them. ... Grants like this show us that companies like Google aren’t prepared to wait for government or someone else to fix the problems we’re all discussing, but want to help tackle them themselves.' 15,000 Model B units at $35 each would run $525,000." -
"Adults Only" OpenArena Now Playable On Raspberry Pi
hypnosec writes "The Raspberry Pi Foundation has released OpenArena – a multiplayer first person shooter game based on Quake III — for the Raspberry Pi. Available as a free download, the game has been rated 'Adults Only' because of the blood and guns. The open-source game is powered by the 'ioquake3' fork of the engine that Quake III runs on id's Tech 3 engine. Modifications have been made to the gameplay by removing the copyrighted material and adding new free content." -
A Least Half a Million Raspberry Pis Sold
hypnosec writes "The Raspberry Pi Foundation has announced that it could have sold over a million units of its credit-card-sized computer, the Raspberry Pi. Announcing the achievement, the foundation wrote that one of its distributors, Element14, has sold over half a million units of the Raspberry Pi, and even though the foundation doesn't have up-to-date figures from its other distributor, RS Components, it is expecting to have sold its millionth unit of the computer." -
Raspberry Pi Gets an Open Source Educational Manual
Last year a group of UK teachers started working on a Creative Commons licensed teaching manual for the Raspberry Pi. That work has produced the Raspberry Pi Education Manual which is available at the Pi Store or here as a PDF. From Raspberry Pi: "The manual is released under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 unported licence, which is a complicated way of saying that it’s free for you to download, copy, adapt and use – you just can’t sell it. You’ll find chapters here on Scratch, Python, interfacing, and the command line. There’s a group at Oracle which is currently working with us on a faster Java virtual machine (JVM) for the Pi, and once that work’s done, chapters on Greenfoot and Geogebra will also be made available – we hope that’ll be very soon." -
Raspberry Pi Gets an Open Source Educational Manual
Last year a group of UK teachers started working on a Creative Commons licensed teaching manual for the Raspberry Pi. That work has produced the Raspberry Pi Education Manual which is available at the Pi Store or here as a PDF. From Raspberry Pi: "The manual is released under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 unported licence, which is a complicated way of saying that it’s free for you to download, copy, adapt and use – you just can’t sell it. You’ll find chapters here on Scratch, Python, interfacing, and the command line. There’s a group at Oracle which is currently working with us on a faster Java virtual machine (JVM) for the Pi, and once that work’s done, chapters on Greenfoot and Geogebra will also be made available – we hope that’ll be very soon." -
Raspberry Pi Team Launches Pi Store
sfcrazy writes "Raspberry Pi developer team has introduced the Pi store, a place to get software for Raspberry Pi, in collaboration with IndieCity and Velocix. The team hopes that the store will become a one-stop-shop for Raspbian Pi users. The store already has 23 major applications available for users including LibreOffice and Asterisk. There are classic games like Freeciv and OpenTTD and Raspberry Pi exclusive Iridium Rising. The team also managed to get 'one piece of commercial content: the excellent Storm in a Teacup from Cobra Mobile.'" -
Raspberry Pi's $25 Model A Hits Production Line
hypnosec writes "The Raspberry Pi Foundation has announced that the cheaper variant of the Raspberry Pi — the Model A — has entered production phase. Model A of the credit-card sized computer has been stripped of its Ethernet port and a USB port, leaving just one USB port. This model comes with 256MB RAM, but as it is less complex compared to its predecessor it will consume less power, thus opening up quite a few new usage scenarios. The Foundation has posted the first image of the $25 Model A on its site and noted 'We're anticipating that those of you who buy the Model A will be using it for different applications from Model B owners.'" -
On Demo, a $25 1080p Camera Module For Raspberry Pi
hypnosec writes "The Raspberry Pi Foundation has announced a new add-on – a camera module that will enable the credit card sized computer to snap pictures as well as record 1080p videos. Showcased by RS Components at the Elecontrica 2012 in Germany [watch video here] the £16 (apprx) module will be equipped with a 5MP sensor and will plug into the otherwise unused CSI pins of the Pi. The camera module's board is still in prototype stage and is expected to reach production sometime soon. Liz Upton, Executive Director of the Foundation said in a blog post, 'We've a (very) little way to go before we're able to send it out to manufacture.' According to Upton, testing slots have been booked in December to check on electromagnetic radiations from the ribbon cable." -
ARM Code for Raspberry Pi Goes Open Source (Video)
"The Raspberry Pi project relies heavily on Open Source and Free Software — heck, it's targeted by more than one Linux distro. But some of the hardware stack that makes up the Pi itself needs closed-source code to run; the code that runs all kinds of low-level hardware is often closed source and closed off. I got wind from project instigator and lead Eben Upton that the system-on-a-chip at the Raspberry Pi's heart is about to get a lot more open. Says Upton: "We're about to open source all of the remaining closed source ARM code for the Pi. This will make BCM2835 the first ARM multimedia SoC with a fully-open-source ARM user and kernel implementation." I spoke for a few minutes with Alex Bradbury, who runs the Linux software work for the project, about licensing and what the new code means not only for Raspberry Pi but for users and other OS projects." (Note: the sound quality on this translantic Skype call is poor. We suggest reading the transcript.) Get the code while it's hot. -
ARM Code for Raspberry Pi Goes Open Source (Video)
"The Raspberry Pi project relies heavily on Open Source and Free Software — heck, it's targeted by more than one Linux distro. But some of the hardware stack that makes up the Pi itself needs closed-source code to run; the code that runs all kinds of low-level hardware is often closed source and closed off. I got wind from project instigator and lead Eben Upton that the system-on-a-chip at the Raspberry Pi's heart is about to get a lot more open. Says Upton: "We're about to open source all of the remaining closed source ARM code for the Pi. This will make BCM2835 the first ARM multimedia SoC with a fully-open-source ARM user and kernel implementation." I spoke for a few minutes with Alex Bradbury, who runs the Linux software work for the project, about licensing and what the new code means not only for Raspberry Pi but for users and other OS projects." (Note: the sound quality on this translantic Skype call is poor. We suggest reading the transcript.) Get the code while it's hot. -
Raspberry Pi Gets 512MB Filling
sfcrazy writes "Good (and bad) news for Raspberry Pi lovers, the Model B has been upgraded to 512MB RAM from 256MB. Bad news is for those who already got their Model B shipments because all those who have outstanding orders with either distributors will get the *upgraded* version of the device, means with 512MB RAM instead of 256MB. The upgraded devices should be arriving to customers from today onwards. Raspberry Pi team will be pushing a firmware upgrade soon so these news devices can detect and use the additional RAM." -
Open Source Raspberry Pi WebIDE Alpha Released
ptorrone writes "Adafruit, the NYC based open-source hardware company led by Ladyada released their open-source Raspberry Pi WebIDE alpha today. Its goal is to be 'The easiest way to develop code on your Raspberry Pi.' To get up and running head on over to learn.adafruit.com/webide and follow the installation and setup instructions. It uses Bitbucket, and any code changes you make will be synced to your Bitbucket account. Adafruit chose Bitbucket over GitHub because they offer free secure accounts, which is very important for a Web-based IDE." -
Raspberry Pi Hits 1GHz With Official 'Turbo Mode'
hypnosec writes "The Raspberry Pi, which was recently used to build a cluster, has officially been given a 'Turbo Mode' by The Raspberry Pi Foundation, thus enabling overclocking. It will bump the frequency of the on-board processor as high as 1GHz as long as the temperature stays below 85C. The patch would dynamically increase the voltage and frequency of the core until the thermals hold. According to the Foundation, users have the option of choosing one of five peak frequencies, the highest being 1GHz." -
Raspberry Pi Revision 2.0 Board Announced
An anonymous reader writes "The Raspberry Pi finally saw a release on February 29 this year and is thought to have sold 200,000 units, with a million expected to ship before the year is over. That's a lot of tiny PCs, but it's also been an opportunity for owners to feedback any problems or tweaks they'd like made to the board. The Raspberry Pi Foundation has taken the feedback on board and today announced a revised design is being put into production. The new Raspberry Pi, known as revision 2.0 PCB, is expected to start shipping in the next few weeks. The revision includes a number of changes, but is essentially the same board. To summarize it includes a new reset circuit, a replacement for the reset fuses allowing for more reliable USB hub power, two GPIO pin changes for JTAG debug support, four redundant GPIO signals have been removed, and a new connector has been added for attaching a range of boards including a clock or audio codec. Two of the more easily noticeable changes include a fix that stops the HDMI connection interfering with certain operations of the Raspberry Pi, and the addition of two 2.5mm mounting holes to allow for easier mounting." -
Serious Problems With USB and Ethernet On the Raspberry Pi
First time accepted submitter rephlex writes "The USB controller used in the Broadcom BCM2835 (which is the SoC the Raspberry Pi uses) has buggy drivers which have been causing problems for many of its users. In addition to this, the Pi can only supply an unusually low amount of current to its USB devices, just 140 mA approximately, and using a powered hub to sidestep this limit exacerbates the issues caused by the USB drivers. Even Ethernet is affected as the Ethernet controller used on the Raspberry Pi is connected to the SoC via USB. This has resulted in packet loss and even total loss of network connectivity in certain situations. Attempts have been made in the past to fix the buggy USB drivers as there are other devices which use this problematic controller. None of these attempts seem to have achieved very much." -
Adafruit Releases Educational Linux Distro For Raspberry Pi
ptorrone writes "Open-source hardware company Adafruit has released a Linux Raspberry Pi distro for hardware hacking and teaching electronics. This distro comes with SPI, I2C, & OneWire WiFi. It also has some things to make overall hacking easier, such as sshd on startup (with key generation on first boot) and Bonjour (so you can simply ssh raspberrypi.local from any computer on the local network). The distro is called Occidentalis v0.1. Rubus occidentalis (the black raspberry) is derived from Raspbian Wheezy, and is available for download here." -
Android 4 Coming To the Raspberry Pi
SmartAboutThings writes "Raspberry Pi ... might be getting a functional Android port real soon. According to a post on their official blog, they have managed to port almost all the basic functions of Android 4.0 on Raspberry Pi, besides audio support. This comes after the Raspbian OS has been released for Raspberry Pi, and it promises to be 40% faster." For anyone hoping for source to the graphics accelerator, you're still out of luck: everything video related is still implemented using a blob.