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.. _exp_servo:

Servo
==============================

**Introduction**

In this project, we will learn how to control a servo motor using a Raspberry Pi. Servo motors are commonly used in robotics and automation for precise control of angular motion.

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**Circuit Diagram**

The circuit diagram below shows the connections required for controlling the servo motor.

.. image:: img/fzz/1.3.2_sch.png
   :width: 80%
   :align: center



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**Wiring Diagram**


.. image:: img/fzz/1.3.2_bb.png
   :width: 80%
   :align: center



----------------------------------------------

**Code**

The following Python code demonstrates how to control the servo motor by moving it between various angles:


.. raw:: html

   <run></run>

.. code-block:: python

   from fusion_hat.servo import Servo   # Import the Servo class for controlling servos
   from time import sleep               # Import sleep for timing delays

   servo = Servo(0)                     # Create a Servo object on channel 0

   while True:                          # Loop forever
      # Sweep from -90° to +90° in steps of 10°
      for i in range(-90, 91, 10):
         servo.angle(i)               # Set servo to angle i
         sleep(0.1)                   # Small delay for smooth movement

      # Sweep back from +90° to -90° in steps of -10°
      for i in range(90, -91, -10):
         servo.angle(i)               # Set servo to angle i
         sleep(0.1)                   # Small delay for smooth movement



This Python script controls a servo motor connected to PWM 0. When executed:

1. The servo moves from -90 degrees to 90 degrees in 10-degree increments.
2. It pauses for 0.1 seconds between each movement.
3. It then reverses the direction and moves from 90 degrees to -90 degrees in 10-degree increments.
4. The process repeats indefinitely.