Barcode Scanner Emulator


Build primarily as proof of concept and because I found the challenge interresting, this little unit is able to send an ascii string terminated with a CR/LF via a RS232 connection. It’s emulating the transmission of a barcode and can be used with any kind of equipment that is expecting a barcode.... Read More

AVR Serial Programmer

For a long time I’ve been meaning to start working with microcontrollers. Even though I bought a STK500 development board a couple of years ago, I never really got started using it. Now I want to try again :)
For that purpose I bought the book Hardware und C-Programmierung in der Praxis. It’s a german book giving the basics on microcontrollers. You should check it out. That is. If you understand german… Else I’m sure there are books available in english that can help you along.... Read More

LED Fog Light

So my brother got these dark taillights for his BMW car. Unfortunately the bulb for the fog light is missing. Actually it isn’t possible to install a bulb as it’s not prepared for it.
Now I needed to solve this somehow. And as I’ve been meaning to look into LED lighting for some time I used this as an excuse to make one.... Read More


OK, so I bought this car alarm. It’s nice and all, but it has this really irritating habit of chirping every time I activate and deactivate the alarm. I keep odd hours, so I have no interest in bothering my neighbours with the chirping in the night.
Unfortunately there is no way to disable this feature.... Read More