1. Serial communication note: Use an Arduino card or FTDI adapter (TTL level, not RS232/RS485) for serial communication.
2. Mode selection: Press the KEY button to switch between Set, Analog, PPM, UART modes; the corresponding LED indicates the current mode.
3. PID self-tuning: Switch to Set mode via KEY button to auto-tune PID parameters for the motor.
4. Power supply: Ensure input voltage is within DC 6~36V (limit 40V); avoid reverse connection of power supply.