cell_loader_ctrl/playgrounds/servo.py

import pigpio

def main():

    pi = pigpio.pi()
    servo_pin = 14

    print("Servo Playground")
    print("Type an angle (0-180) to set the servo, or 'q' to quit.")

    while True:
        cmd = input("Enter angle: ").strip()
        if cmd == "q":
            print("Exiting.")
            break

        if not pi.connected:
            raise RuntimeError(f"Failed to connect to pigpio daemon for pin {pin}")
        
        try:
            angle = float(cmd)
            if not (0 <= angle <= 180):
                print("Angle must be between 0 and 180.")
                continue

            # Map angle to pulse width
            pulsewidth = int(500 + (angle / 180.0) * 2000)
            pi.set_servo_pulsewidth(servo_pin, pulsewidth)

            print(f"Set servo to {angle} degrees.")
            
        except Exception as e:
            print(f"Invalid input: {e}")
        finally:
            pi.write(servo_pin, 0)
            pi.stop()

if __name__ == "__main__":
    main()