The on-board mature and stable 8-bit MCU is used to generate high-resolution PWM signals with precise controlIt supports manual mode and centering mode, switched by buttons, with mode indicatorSupport knob adjustment or serial command control in manual modeWhen controlling by serial port command, you can use the matching host computer or connect to an external MCUNumber of control channels: 2 channels (MO and M1 servos). When using the knob to adjust and return to the center function, the 2 servos can be controlled at the same time. When using the serial port command, the 2 servos can be controlled separatelyServo control accuracy: 0.09 degrees (that is, the PWM limit small change value is 1us)Support the steering gear with a control cycle of 20ms and a pulse width of 0.5-2.5msYou can directly use the 2S lithium battery charging head to debug and return to the steering gearPower supply voltage range: 5-9V (specifically based on the actual power supply voltage of the steering gear used)Instructions for useXH2.54mm socket: standby power interface, can be connected to 2S lithium battery2x3P pin header: 2-way servo interface, where VCC is the positive pole, GND is the negative pole, and S is the signal terminal; TX, RX: UART serial port pinsSWIM, NRST: reserved MCU program download; vCC, GND: power interfaceColour: greenMaterial: PCBSize: 10 x 4 x 2cmPackage Contents:1 x serial port control boardOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.