[sgk] built this tiny ethernet board to be used with the Arduino. It’s based on a WIZnet W5100 chip. The chip handles all of the TCP/IP communication and you talk to it via SPI. It’s compatible with the standard Arduino ethernet library. [sgk] hand soldered these boards including the 80pin LQFP main chip. His next project is to put the AVR and W5100 all on the same board. It sounds like he’ll use components larger than 1005 though.
[Ian Smith] sent us this POV display made from an old hard drive. It works by flashing some LEDs under the platter, which has a line cut in it. Since the platter spins at roughly 90 rotations per second, we perceive a solid image. He was inspired by [Alan Parekh]’s project, but did several things differently. Mounting the LEDs was much simpler in this project as he had a strip of RGB LEDs that came with adhesive tape on the back. He also used a small magnet and a hall effect sensor to measure full rotations instead of an IR beam sensor. Check the video after the break.
As promised, [Joe Grand] has uploaded the schematics from his part of last night’s episode of Prototype This. The device monitors the driver of a demo derby car and shuts it off if he becomes too enraged. He’ll be posting schematics for every episode as they’re released. The really interesting thing is that he scanned all of his development notes too. If you missed the episode, you can watch it on Discovery’s site. You can also grab a version that doesn’t idiotically force you to watch in full screen browser window from The Pirate Bay.
UPDATE: [Joe] has been responding to your comments.
If you absolutely feel an incessant need to see the innards of every new piece of equipment out there, you’ll probably be excited to see that the PSP 3000 has been disassembled and photographed. Apparently there isn’t much new here. The screen has been replaced with one that has 5 times the contrast ratio, twice the color range, and a refresh rate that is twice as fast. Other than that, there’s a built in microphone and a mystery “PS” button.
[via Engadget]
We’re not 100% sure what exactly is going on here. It appears to be a massive evaporative cooling rig for a computer, though the title has us wondering if it doesn’t have any other uses. There isn’t much of a description, but we felt the sheer magnitude of this cooling system warranted some publicity. Some digging around shows that this was out in 2003, but it is new to us.
[via reddit]
[Ben Heck], in a display of true hacker spirit, has released a tutorial on how to mod the Access Controller. We have been waiting for it, but we can’t help but commend the detail he goes into. He lists pinouts, as well as digi-key part numbers for various replacement parts. Great job as usual [ben].
[strider_mt2k] sent in this new Dell Mini 9 hack. After seeing the recent GPS in a Dell Mini9 project, he decided to jump in and do some hacking of his own. His idea was to integrate his Logitech wireless mouse receiver internally. He basically added an internal usb port, allowing for future replacements if the mouse should it get broken or upgraded. The final result is completely hidden. There was plenty of space in the case, so there’s no bulge at all.
