Fresh hacks every day
Since he's got several Raspberry Pi boards on hand [Eric Erfanian] decided to see what he could pull off using the robust networking tools present in every Linux installation. His four-part series takes you from loading an image on the SD cards to building a mesh network from RPi boards and WiFi dongles. He didn't include a list of links to each article in his post. If you're interested in all … [Read more...]
It's great to see Linux running on a device in a way that was never intended. [tangrs] has successfully run a Linux kernel on the ARM based Nspire CAS CX graphing calculator. He's developed an in-place bootloader that allows a kernel to be loaded from within the stock Nspire OS. It also allows for peeking and poking at memory for debugging. [tangrs] also managed to get USB host mode working … [Read more...]
http://www.youtube.com/watch?v=NSVOuHToJ6c As your embedded applications get more complicated an On-Chip Debugger will save you a lot of time when things don't run quite right. On-Chip Debugging (OCD) is just what it sounds like -- a way to run your program on the target chip that lets you pause execution to examine values and change them if need be. The Arduino has no built-in method of using … [Read more...]
[Nick Johnson] recently wrote in, sharing a neat project he put together in his spare time. Our readers are most likely familiar with the ubiquitous "fortune" program that ships with many *nix distros, offering cheeky comments and quotes with the press of a button. [Nick] thought it would be cool to build a fortune telling machine using the app, resulting in the handsome device you see … [Read more...]
[Jeremy Blum] wrote in to share his LibeTech QR Code Door Lock project. He developed it during his Senior year at Cornell University along with three of his classmates. It seeks to move away from magnetic card locks in favor of optical locks that authenticate based on a QR code. The hardware he's using here is definitely cost prohibitive, but we're sure the concept could be greatly simplified. … [Read more...]
[Stefan] uses a small ARM-powered netbook for his development work, so when he tried to play around with the Parallax Propeller he ran into a few problems. The official tools from Parallax are Windows only, and the available 3rd party dev tools are only compiled for x86. After a lot of futzing about, [Stefan] was able to develop on his ARM netbook and wrote in to tell us how it's … [Read more...]
This is a Raspberry Pi outfitted in a DSLR battery grip. [Dave H] was very interested in the idea of combining a single-board computer with a high-end camera. The size and cost of such a computer was prohibitive until the RPi came along. He managed to fit the board into the broken battery grip he had on hand, and he already has the prototype up and running. [Dave's] alterations to the battery … [Read more...]
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