Our friend Bob Davis has been working with some Signature Electronic Signs. He didn’t like the complex controller that came with the device so he made a controller based on the arduino to control the sign. You can see the code that makes the system work here. These displays are available on Ebay at some reasonable prices, Bob describes some of technical details of the display here where he
Dane from Transistor Man had a Macbook Pro with a GPU that wasn’t working. The system would boot but the display output was dead. Similar to the Xbox 360 BGA problems there are some Macbook Pro computers that have experienced BGA solder issues. The big issue here is that BGA devices have the solder connections under the device itself. Dane used a heat gun and a variac to blow
  If you follow the instructions on this site you will end up with a Stun Baton which takes a 4 volt battery and converts it to 10,000 volts of sparking fun. Of course be very careful if you decide to take on this project since the voltages created can do some serious harm. Thanks for the tip Isaac R. “The Royer Oscillator magically turns the ~13 volts at
Matt Meerian from Home Brew Electronics has an issue with his basement waterproofing tar seeping into his sum pump pit. As you can imagine cold tar seeping into the pit would cause havoc with the pump and water level detection. He has designed a DIY Internet Sump Pump Monitor to alert him if there is a problem such as the pump running too long or the water level getting
Growing up I remember having fun with an old Van de Graaff Generator that lived in a friends basement (his dad was a high school science teacher). Dmitriy sent in his DIY Van de Graaff Generator Project that he just completed using some things around the house. The inspiration was from a popular M&M’S holiday ornament tin that can be found these days (probably on the clearance shelf today). Project details.
This Tweeting Cat Door Project uses the new Electric Imp controller. If you haven’t heard about the Electric Imp before watch the video that Engadget recorded at Maker Fair at their booth. The Electric Imp is a neat idea, the form factor is an SD card but that was just chosen since there are lots of cheap SD card connectors available. The Imp has been designed so that if it
Dave from the EEVblog did a video a few months back that I somehow missed. His new shop is in a building where they seem to through out a ton of stuff. So much that he regularly does some dumpster diving to see what interesting things he can find. This time around he was able to get his hands on two Samsung Syncmaster 204 Monitors. Samsung has a good
