Among these are the Serial Servo Raspberry Pi HAT, the Serial Servo based on ESP32, the Serial Servo Pico HAT, the Serial Servo Arduino Shield, and the Serial Servo Breakout.

An Arduino is used to determine the servo’s current position versus the desired position, and it turns the motor accordingly with a BTS7960 motor driver.

This solar tracker system uses the Arduino UNO board, a servomotor, 2 LDRs and 2 resistors to rotate the solar panel towards the Sun or a source of light.

To do this in Arduino/C code, a new intermediate position for the servo is specified for each main loop until it reaches the final position.