LED dial light pipes for potentiometers and encoders « Adafruit Industries – Makers, hackers, artists, designers and engineers!
example] Dimmable LED with rotary encoder | MySensors Forum
Monome Unveils ARC - Optical Rotary Encoder > FutureMusic the latest news on future music technology DJ gear producing dance music edm and everything electronic
Rotary encoder display -2×16 LED – TH custom effects