Gary Vladimir Núñez López Hi! Thanks for your answer. I just repeated the tutorial with the second library (--> Adafruit_CircuitPython_ServoKit). The same kind of error: Traceback (most recent call last): File "/home/pi/rover/Main.py", line 35, in <module> test.test() File "/home/pi/rover/Controllers/ServoController.py", line 12, in test kit.servo[7].angle = 175 File "/home/pi/.local/lib/python3.7/site-packages/adafruit_servokit.py", line 147, in __getitem__ servo = adafruit_motor.servo.Servo(self.kit._pca.channels[servo_channel]) File "/usr/local/lib/python3.7/dist-packages/adafruit_motor/servo.py", line 89, in __init__ super().__init__(pwm_out, min_pulse=min_pulse, max_pulse=max_pulse) File "/usr/local/lib/python3.7/dist-packages/adafruit_motor/servo.py", line 29, in __init__ self.set_pulse_width_range(min_pulse, max_pulse) File "/usr/local/lib/python3.7/dist-packages/adafruit_motor/servo.py", line 33, in set_pulse_width_range self._min_duty = int((min_pulse * self._pwm_out.frequency) / 1000000 * 0xFFFF) File "/home/pi/.local/lib/python3.7/site-packages/adafruit_pca9685.py", line 56, in frequency return self._pca.frequency File "/home/pi/.local/lib/python3.7/site-packages/adafruit_pca9685.py", line 134, in frequency return self.reference_clock_speed / 4096 / self.prescale_reg ZeroDivisionError: float division by zero I expect you have nothing different running than the stock Raspian? What version of python do you use? Python3.10? I have Python3.7 on the Raspberry Pi, and I do not know how to upgrade it to 3.10... Your help would be VERY appreciated!