Introduction - If you have any usage issues, please Google them yourself
Lantern cycle control 5 switches to control the lights connected to P0 port 8 cycles, 1. K1-K2 for four kinds of loop mode lamp lights 2. K3 control loop for selecting a loop direction 3. K4 lamps speed 4. K0 used to initiate external interrupts, external interrupt can only be lit by K1-K4 for ways to control