Of course the Arduino and motordriver dont find place in the standard housing they are glued in a box on the side of the servo. B.T.W you just dont tell it to go to zero after a 10 hour print :-).

On the other hand, the Serial Servo based on ESP32 is a dedicated driver board for Serial Bus Servos, capable of controlling up to 253 servos simultaneously via the ESP32 serial port.

In the setup() function we set the pins were the LDR are connected as INPUTs and position the servo motor at 90° then wait for a 2 seconds before the code execution inside the loop(). In the loop() we ...

The code includes two Arduino libraries: one for the servo and another for the ultrasonic sensors. The main code is a simple 14-line piece with a simple if-else statement you can readily modify.