Yahoo recently held *Ahem* Hack Day developers conference/workshop. The winner’s pictured – a ‘blogging purse’. It looks like it just uploads images. The details are a bit on the weak side, but some of the stuff looks neat. The purse contains a camera, basic stamp, pedometer and Nokia phone.
The YBox is some sort of network to TV gateway (Microcontroller, Ethernet, IR reciever, RF out in an altoids tin). Looks like it pulls data from yahoo channels, but supposedly it’s configurable for custom data.

Speaking of contests, [David] pointed out this ARM design contest – entering will garner you a free dev kit.

Nixie clocks seem to be a right of passage. [jkx] sent us something a little different. I’m diggin this one because the russian tube is pretty esoteric. He’s got a few nice looking projects up. (His tube amp is a beauty.) And yeah, there’s a video.

One of our Hackaday favorites, [Sprite_tm] made my morning when he sent this in. He built a driver circuit for a HP inkjet cartridge that allows him to print by hand. Ideal for printing on other people, their white boards or their beer. He had to do some blackbox reverse engineering to figure out what the onboard driver chip does on the cartridge. Considering the task, the circuit is surprisingly simple. It has some ATTINY brains, some driver transistors, a data bus and a DC/DC power converter to get the required 1.21 gigawatts, er 20 volts to drive the cartridge.

[Floor] sent in this PDF [I’ve mirrored it here] describing how to get a game of chess running on a dutch voting machine. (Even better, it describes how to monitor who’s voting for what via RF emissions) They did a thorough job of hacking the daylights out of it and proving the insecurity on these machines. You can get some more details on the web site.