- Audio
- Overview
- Integrated amplifier
- Clocks
- Overview
- Central clock DCF77
- Nixie clock
- Instruments
- Overview
- Pulse generator
- Temperature logger
- Just for fun
- Overview
- Adolphson-Falk decode
- Light
- Overview
- Stroboscope
- Locks
- Overview
- Fingerprint reader
- Remote control
- Overview
- Nexa system
- Repair / restore
- Overview
- Cambridge Azur 340A
- Wurlitzer Snack-25
- Web design
- Logic Applied AB
- Astronomical clock