Today i build my first DIY Module. It's a Clock from 10-400 BPM, based on an Arduino 328p with Pulses of 20ms Length (adjustable in the Arduino-Sketch)/ TTL-Level. The Clock is very accurate, because it's based on the TimerOne-Library, which in turn uses the 16-bit hardware Timer. The Encoder have an integrated LED. Turning the Encoder gives you an Increment/ Decrement of 1, turning the Encoder while pushing the Button an Increment/ Decrement of 10. You can bridge the Clock to the BUS Clock. There's also a second Clock Out with the same Speed, but shifted about 180 Degrees to the Main Clock. You can use it as push-Pull or in Company with an OR-Gate as a Clock-Doubler.