The KY040 has 5 pins:
The CLK (clock) and DT (data) pins are how you read the direction the encoder has been turned. The CLK pin goes low when the encoder has been turned and the DT pin shows which was it has been turned, low for clockwise, high for anti clockwise.
- GND - ground
- + - 3.3v
- SW - switch
- DT - data
- CLK - clock
The CLK (clock) and DT (data) pins are how you read the direction the encoder has been turned. The CLK pin goes low when the encoder has been turned and the DT pin shows which was it has been turned, low for clockwise, high for anti clockwise.
