Slashdot Mirror

hamster_nz writes: A fellow Kiwi is attempting to crowdfund a world-wide network of open-source, software-defined, radio receivers. Once in place, this will allow anybody anywhere in the world to scan the 0 to 30MHz RF spectrum from the comfort of their HTML-5 web browser. Built on top of the Beaglebone, the "KiwiSDR" RF board also includes a GPS receiver front-end, which will allow timing between receivers to be correlated, giving a lot of options for projects like long baseline interferometry and lightning detection. Prototypes are already deployed, and I've been RXing in Sweden, Australia and New Zealand. [The KiwiSDR design has been detailed on JKS.com, where there is a link to the project's Kickstarter page.]

An anonymous reader writes MINIX 3 is a small POSIX-compliant operating system aimed at high reliability (embedded) applications. A major new version of MINIX 3 (3.3.0) is now available for download at www.minix3.org. In addition to the x86, the ARM Cortex A8 is now supported, with ports to the BeagleBoard and BeagleBones available. Finally, the entire userland has been redone in 3.3.0 to make it NetBSD compatible, with thousands of NetBSD packages available out of the box. MINIX 3 is based on a tiny (13 KLoC) microkernel with the operating system running as a set of protected user-mode processes. Each device driver is also a separate process. If a driver fails, it is automatically and transparently restarted without rebooting and without applications even noticing, making the system self-healing. The full announcement, with links to the release notes and notes on installation, can be found at the Minix Google Groups page.

DeviceGuru writes "At the Maker Faire Rome this week, Arduino announced a next-generation Arduino single board computer featuring a dual-processor architecture, and able to run a 'full Linux OS', in contrast to the lightweight OpenWRT Linux variant (Linino) buried inside the Yun's Atheros WiFi module. The Arduino TRE features a 1GHz 32-bit TI Sitara AM335x ARM Cortex-A8 SoC for running Linux software, plus an 8-bit Atmel ATmega MCU for AVR-compatible control of expansion modules (aka shields). The TRE's Sitara subsystem includes HDMI video, 100Mbps Ethernet, and 5 USB 2.0 ports, and is claimed to provide up to 100X the performance the Arduino Leonardo and Uno boards. Interestingly, the TRE's development reportedly benefited from close collaboration between Arduino and the BeagleBoard.org foundation."

DeviceGuru tipped us to the release of the latest single board computer from Beagle Board. It's been two years since the previous BeagleBone was released, and today they've released the BeagleBone Black (including full hardware schematics) at a price competitive with the Raspberry Pi ($10 more, but it comes with a power brick). Powered by a Cortex-A8, it has 512M of DDR3 RAM, 2G of onboard eMMC, two blocks of 46 I/O pins, a pair of 32-bit DSPs, the usual USB host/client ports, Ethernet, and micro-HDMI (a much requested feature). Support is provided for Ångstrom GNU/Linux, Ubuntu, and Android out of the box. Linux Gizmos reports where some of the cost savings came from: "According to BeagleBoard.org cofounder Jason Kridner, interviewed in a Linux.com report today, cost savings also came from removing the default serial port as well as USB-to-serial and USB-to-JTAG interfaces, and including a cheaper single-purpose USB cable. (Three serial interfaces are available via the expansion headers.) In addition, the power expansion header for battery and backlight has been removed."