ERCF Easy Optical Encoder Module
  ERCF Easy Optical Encoder Module For ERCF: to make it easier for everyone to use a transmissive optical sensor  in one simple sentence, a DIY friendly, a much cheaper and easier blinky sensor module for ERCF.   What is this: for  ERCF (Enraged Rabbit Carrot Feeder Multiple Material System for Voron  or alike 3D printers) replace the original reflective optical sensor which is quite not  reliable. so mneuhaus made a transmissive optical sensor encoder called Binky,  which should provide a much more reliable encoder functions/counter. https://github.com/mneuhaus/EnragedRabbitProject/tree/main/usermods/Binky  What is a transmissive optical sensor an optical sensor, or photo sensor, slot type, like SX1103, or ITR9608. It has a infrared diode and a receiver, if an object blocks the infrared  light, the receiver detects it and triggers/send a signal.  However, there are still some problems remains with Binky module,  blinky PCB is quite expensive, plus shipping (international!) and tax...