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").

A nother commom issue is timekeeping. This little module contains a DS3231 (or DS3232 with RAM) and the backup battery.

This is a multifunctional egg-timer. It has the following features:

I made this project as a side quest for a company. It was used in the production for fast and reliable testing at the end of line. 

I happened to find an old Game Boy camera on a jumble sale. The thing as such is not worth much, got it for a few bucks. But the image sensor can be used to make low-res pictures using a microcontroller with an ADC.

The well known "4-In-A-Line" game. It is powered by an Atmel AVR AT90S2333. You can either play against the computer or a second player.

I just had to build a robot that was called "Gizmo". It was actually just a fun project.

Measuring current in a design used to be a bit tricky. But with modern semiconductors this is no more effort than a tiny module with an I2C bus. It only needs three resistors and two capacitors. I used this IC in the Read more

This is a simple two channel remote control. It controls two mains outputs. It protects the consumer from being switched on and off too fast.