Features:
The onboard mature 8-bit MCU is used to generate high-resolution PWM signals with precise control.
Support manual mode and return mode, switch by button, with mode indicator;
Support knob adjustment or serial command control in manual mode;
The serial port command control can use the matching host computer or connect to the external MCU;
Number of control channels: 2 channels (M0 and M1 servos). When using the knob adjustment and return function, the 2 servos are controlled at the same time. When using the serial command, the 2 servos can be controlled separately.
Steering gear control accuracy: 0.09 degrees (that is, PWM minimum change value of 1us)
Support steering gear with a control period of 20ms and a pulse width of 0.5-2.5ms (such as Futaba, Huisheng, etc.)
Can directly use 2S lithium battery charging head to debug and return to the steering gear
Power supply voltage range: 5-9V (specifically based on the actual servo supply voltage)

Board interface description:
VCC, GND: power interface;
XH2.54mm carrier: backup power interface, can be connected to 2S lithium battery;
2X3P pin header: 2-way servo interface;
TX, RX: UART serial port pins;
SWIM, NRST: Reserve the MCU program download port.
Notes:
Because the steering gear is a relatively power-consuming device (such as the /MG996 steering gear), the power supply current to the steering gear needs to be sufficient. If the on-board LED flashes when the steering gear rotates, the steering gear is not controlled or the error When the abnormality is abnormal, the power supply current is insufficient and the power supply needs to be replaced.