This is the third and final galvanic insulator in my little series. It provides an insulated UART with TTL levels. It was tested up to 256K baud. Read more

For some areas like medical equipment or test equipment it is required to galvanically insolate the peripheral from the PC. This little device serves this purpose.

This little double sided PCB is a galvanic insulator for the popular Atmel ISP MK2.

After I had a little mishap with my Saleae Logic that ruined the analyzer and parts of my PC it was clear that some galvanic protection needed to be implemented. 

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One basic need of a computer scientist is to measure the power that a USB device drains off the PC. Read more

This is the bigger brother of the Temp-p-clock. It has a 128x64 pixel display with a touchscreen. Read more

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. Read more

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. Read more

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

This is a 16x16 LED matrix. The picture is scanned at about 60 frames a second. The program has an entry menu and is written in C. Read more

This is a tiny breakout board for the MAX7456 OSD IC. It has all the required components onboard. It measures 17mmx35mm and uses 5V. OSD stands for on screen display. It means using a TV as a display. Read more