This is a beautiful blue LED light with a 360 Degree 20 Pulse Rotary Encoder. You can turn on the LED light using software or hardware.
It is recommended that the power supply of VDD be 3V to 3.3V. the voltage is directly connected to the positive pole of LED. If the voltage is higher, Pls increase the limit current resistance.
D1 and D2 are 20 pulse data pins,the central axis is connected to the ground. If the detection is unstable,Pls connect the 1NF filter capacitance between D1 and D2 to stop the jitter.
After the KEY is pressed, the KEY Pin is connected to the ground .