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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.
That's GbE attached via USB 2.
The gigabit ethernet port is connected to the CPU via a USB 2.0 on the board, so that is your bottleneck.
It's GbE, but throughput is only 300 Mbps. that's f...ed up.
That's USB 2.0 limited speed which is how the Pi works for pretty much all it's basic IO ports. Love it or not, that's a Pi.
"File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
This is VHS against Betamax all over,
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
Linux at its best
Has nothing at all to do with Linux, but the hardware on the Pi. Ethernet connections go though USB 2.0, which limits the bandwidth.
"File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
A fan is nice, but what is this thing's environmental specs these days?
"File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
It's limited by the USB link.
Sounds throttled to me. Is that you Verizon?
any IO will slow the 1 USB bus on this
Lots of these Pi accessories are neat, but completely ruin its ability to be sealed in a case. It looks like this one will fit.
Any ideas?
I hate fat people.
If I wanted to pay $20 for a mere module, I would buy a whole PC.
Where are the disposable computers you can buy in a 12-pack at the discount store?
So all I/O is still over a single USB bus?
I understand there needs to be cost cutting somewhere in devices like this but it's the single component that has never been updated. PoE and network booting is really useful and I think I'll upgrade. More I/O bandwidth would kill the competition.
The whole point of the Pi project was to make a learning tool for students as cheaply as possible. There are hundreds of other single board computers out there with more features and bandwidth. Use the right tool for the job.
Only the State obtains its revenue by coercion. - Murray Rothbard
It's a hardware limit based on the Pi's cheapness... Can you hear me now?
"File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
For $35 and compatible with Raspberry Pi huge ecosystem of accessories and a broad range of compatible operating systems? Seriously, because I'd be interested. I also own a Rock64 (along with several Pi) and have run into numerous problems with it.
The whole point of the Pi project was to make a learning tool for students as cheaply as possible.
They've also been *incredibly* popular in industry. It's pretty common to need a SBC to do some shit and it's not performance sensitive. The fact there are cheaper and more powerful ones doesn't really matter: the Pi is well understood, easy to source next day, and well documented and available for long periods of time. Saving a few bucks is nothing compared to the engineer time not spent messing around.
Likewise the Arduino has revoloutionised vendor devkits.
Weirdly these threads seem to be full of people basically complaining you don't get a fast desktop for 25 dollars.
SJW n. One who posts facts.
Low effort Troll.
Weirdly these threads seem to be full of people basically complaining you don't get a fast desktop for 25 dollars.
Or, these threads are full of low effort Trolls commenting on things they don't understand.
I use a proper PoE adapter which plugs into the USB and Ethernet ports, it costed me 9 bucks.
Given that the BR300 is going for $5.60 at Digi-Key, that must of been one cheap wall-wart you found...
1) What is a HAT? 2) Can I make one for my ARM Serial Signal processor, to be referred to simply as an ASSHAT?
I've abandoned my search for truth; now I'm just looking for some useful delusions.
The funny thing is the Raspberry Pi foundation resisted putting GigE on their Pis for years, because it only has a USB 2.0 bus and it wouldn't run anywhere near GBE speeds.
But all the competitors products had GigE (connected to a USB 2.0 bus), and their customers kept saying "we love the Pi, but why does it only have Fast (100M) Ethernet? Why can't you do GigE like every other single board computer?
I'm guessing they got sick of arguing the point and in the Pi 3 just went "Fine, you want GigE that runs at USB 2 speeds; have GigE that runs at USB 2 speeds".
Say what you like about the Pi (for example, you could look at the foundation's "charitable" status in the UK and determine for yourself if this is a legitimate foundation or a tax avoidance and marketing strategy; or the dishonest / loss-leading pricing strategies they force onto their international retailers), but you can't actually blame them for this one.
I get the impression the costs are slowly creeping on this thing and the features kinda stagnant.
Firstly, to my knowledge, it's STILL 100Mbit networking isn't it? Routed through USB somehow? For most Pi functions, this isn't going to impact people, but if you are an American / European running a Pi and using it as a regular speed test unit
https://www.google.com/search?...
You'll see that anyone with a particularly beefy internet connection will be limited.
Also the CPU is almost good enough to perform light level NAS functionality now. Again, that ethernet letting you down.
Plus it runs quite warm.
Plus there's starting to be several x86 micro PCs which are coming dangerously close in price but able to do, quite a bit more.
The POE hat should be built in and a reasonable passive cooler.
Or you could get one that doesn't block all the IO pins https://amazon.com/NavoLabs-Ra...
No, good engineering would, among other things, not have used an inferior Broadcom SoC in the first place. Seriously. Do you think they are the only ones that make SoCs of this class?
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
Bad chipset then, good USB ethernet chipsets compress the datastream over USB, thus can get higher transmission speeds.
- Raynet --> .
Yes. And that is why I use a Rock64 linked to a 8 port disk tower over USB3 as backup of my backup. Because it is closer to what I need.
I use a Pi zero W with a relay to turn that on and of (among other things) as I do not need the full power of the Rock there.
Don't fight for your country, if your country does not fight for you.
Fun fact even 10BaseT works fairly well. Many would dream of symmetric 10/10 low latency Internet.
That is a very good point.
SJW n. One who posts facts.
This one: https://www.ebay.fr/itm/Power-...
In our testing with Raspberry Pi's (Specifically The RPi 3 B+) total hardware I/O has never exceeded 22MB/s. On the note of better quality chips with a higher process tends to cost more on the hardware side, and kernel development to build around a newer chip will take time. It's a bit of a double-edged sword pushing a simple SBC from as cheap as $3 to make and pushing it to $75 or more to make completely negating the purpose of inexpensive computing solutions for small projects. No matter how you slice it, hardware cost, and time to development around the new hardware architecture will always be a factor as seen from other more expensive SBC solutions offering more for performance.
Key factors to consider:
How much will bulk purchases for newer or different chips cost?
How how many development hours will it take to build on operating systems to support it as well as previous hardware types such as attachable hats?
How much will it cost to build a newer Pi version?
How long will it take?
Something to consider.
Because performance is all that matters, and you get the performance for free, basically. Right?
CLI paste? paste.pr0.tips!
What are you talking about? This is not about performance, this is about interfaces.
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
It's GbE, but throughput is only 300 Mbps. that's fucked up.
That is the bad engineering found everywhere in the Raspberry Pi
Throughput is performance.
CLI paste? paste.pr0.tips!
Apparently they're the only ones with usable Linux graphics drivers, unless something changed.
Ezekiel 23:20
I can agree with these arguments, but they don't seem to have anything to do with the network interface.
Ezekiel 23:20
No, throughput is a specific aspect of performance called throughput (actually network-throughput to be exact). That is why there is a separate word for it. But that is not the real problem. The real problem is that networking over USB is basically a hack that causes numerous problems. And it is an entirely unnecessary hack as SoCs with integrated networking exist that are comparable or better in all other aspects. They are just not made by Broadcom, and the RasPi people are in bed with Broadcom. Also explains why they selected an SoC for a learning machine (!) where a lot of the datasheet is not public.
But from your use of discussion-sabotage techniques I see you do not want to actually discuss facts. That is fine, just do not expect to be taken seriously.
Most ACs are not even worth the keystrokes to insult them. Be generically insulted by this and ignored otherwise.
Because most people weren't running servers with 64-bit PCI slots and we're talking about a Rpi...
You can't be serious.
Throughput is performance
No, throughput is a specific aspect of performance
Yes, dimwit, throughput is the specific aspect of performance that we're talking about. It's not wrong to say we're talking about performance when throughput is an aspect of it.
I can't believe you're maliciously nitpicking in this way while also saying
But from your use of discussion-sabotage techniques I see you do not want to actually discuss facts. That is fine, just do not expect to be taken seriously.
I recommend you take a piece of your own advice and fuck off.
CLI paste? paste.pr0.tips!