Eine Beschreibung auf deutsch findet sich in README_GERMAN

Timer

Timer with encoder-button and relay

I built this software to control the lamp of a photo enlarger. I used a teensy LC but I guess it can run on different boards as well.

For controlling the lamp on 230V AC power, I used a solid-state relay: http://www.segor.de/#Q=SSR2A(Modul)&M=1

Please feel free to contribute on this project. I guess there will be many things to do better since I am not a professional programmer.

Usage

• Click: start / stop timer
• double click: turn lamp on
• long-press: switch between two timers

For a short demo, see this video.

Pictures

new version (with PCB)

old version (still hand soldered)