As usual, the rotary encoder has three pins ... Back to my story, I rigged up a small ‘test circuit’ on a mini breadboard powered by a regulated 5VDC source. See my test setup: The circuit outputs are ...

The encoder and motor doesn’t need to be the same device. A weak motor can slip and let you move it. The encoder could simply be strips printed on a sticker for reflective optical sensor.

So whether you want to drive a 12 V solenoid from a low-voltage microcontroller, drive many LEDs with shift registers, or decode a rotary encoder, there is a circuit snippet here for you.

The PCB Direct virtual breadboard has been created to allow anyone to create interactive virtual breadboard circuits for platforms such as Arduino, ARM, PIC, Raspberry Pi and more, ...