There are many universal remote controls out on the market. None of them have the style of a GameBoy Advance fitted with a little infrared transceiver and a functional C++ program. The name AIR comes from Advanced IR. It was published in the Make blog. Read more

This is a little HTTP Web server and a FTP file server. It is built around an 8bit AVR and a Wiznet LAN module. Once a year I get it out of the box and connect it just for the nostalgia and the delight, that it still works. Read more

This is an automatic video switch (AVS). With this device you can connect a DVD player, satelite receiver and a game console to your TV without repluging.

Sometimes when handling AVRs something happens that is known as "bricking" a device.

Using LED or character LCD displays is quite simple. However 7 segment LCD displays are very nice too and look just that bit more professional and use far less power.

My first attempt using an AVR together with the USB port. It's an HID keyboard device featuring a num lock LED and num lock key.

Sooner or later I had to make one of these. A binary clock.

I made these blinking hearts for my girlfriend.

This is a very early project. It is a 24 hour clock that was built up using only standard CMOS ICs and no µC. The leading zero is surpressed. It has three buttons to set the time and a circular running light.

There are a lot of printer solutions on the market nowadays. Also the connectivity is excellent by enabling printers with WIFI.

The CPC (Chain Punch Counter) is an optical device for martial artists. It can count the so called "Chain Punches" - a technique from the Wing Tsun Kung Fu martial arts.

This is definitely one of my favorite projects and it is hanging in my living room (as of 10 years ago it is not hanging anymore as my better half did not approve of this "hideous thing").