Arduino-Rotary-Encoder-TM1637 Working Video of the System Working Prenciple When the Rotary Encoder rotates, the Arduino reads the data and sends it to the TM1637. Required Library TM1637 Library Required Link Interrupts with Arduino Required Tools Arduino IDE Arduino Uno/Mega/Nano Rotary Encoder (4 Wire) TM1637 4 Digit Led Display BreadBoard USB Cable