An Arduino sketch plus a python daemon to synchronize your pomodoro app with an LCD connected to your arduino.
Currently, it only works with my fork of gnome-shell-pomodoro (that adds Dbus support).
sketchbook/ -> The sketch for the arduino
You need python-daemon and python-dbus
Edit bin/pomarduino if your Arduino is not connected to '/dev/ttyUSB0'.
Start bin/pomarduino