The amateur astronomy site Astromart has a short, informative piece on testing and repacking dead power tool NiCd battery packs. These packs are filled with “Sub C” cells. Taking apart a “dead” pack, you can test the individual cells and replace only the bad cells. Rebuilding NiCd Rechargable Battery Packs – Link Related: Cordless drills […]
There’s more than just one glowing fruit computer now! – Link.
John writes – The Firefly is a tube-based guitar amplifier popularized on ax84.com (a tube amp community and forum). The Firefly PCB was created so even the beginner to tube amps can succeed. The PCB is “open hardware” meaning that the PCB file is free to download and modify as well. Otherwise the PCB’s are […]
Viacheslav writes – I wanted to do something that has a VGA compatible output. I also had an FPGA board lying around and a bad itch to do something useless. With the help of fpga4fun.com, various online Verilog HDL references and VGA timing information I made something that outputs a steady checkerboard picture to a […]
Until now, you’ve needed to be selective about what applications are added to the iPhone’s home screen. There are a lot of great 3rd party apps becoming available, but the OS doesn’t have the ability to show more than 16 at a time on the home screen. Nate True fixed this problem with Dock, an […]
I was never much into amateur radio or crystal set building, so I can’t judge the technical veracity of this project, but the how-to looks very thorough and the results are spectacular. The dials, tap switch and case are so cool-looking, they make me want to build one. Build an antique style crystal radio – […]
A two-part piece on Talk2MyShirt, a wearable electronics blog, shows you how to roll your own solar-powered device-charging bag. Make your own Solar Bag and the sun power will be with you – Link Related: More solar bags… – Link Making messenger bags – The “beta” – Link
