====== Controlling a Servo Motor ======

This scenario demonstrates how to control the position of a servo motor using Arduino. Servo motors are used for precise angular positioning in robotics and automation.

===== Prerequisites =====
  * Familiarize yourself with Arduino hardware reference.
  * Install the built-in Arduino Servo library.
  * Understand basic PWM concepts for servo control.

===== Hardware Connections =====
| Component    | Arduino Pin |
|--------------|-------------|
| Servo Signal | 10 (PWM)    |

Servo specifications:
  * Standard miniature servo (SG90 or similar)
  * Voltage: Typically 5V
  * PWM frequency: 50 Hz
  * Rotation range: ~0° to 180°

===== Suggested Knowledge Resources =====
  * Arduino programming fundamentals
  * [[taltech:arduino:hardware|Arduino Uno Hardware Reference]]

===== Task =====
Write a program that rotates the servo sequentially to 0°, 90°, and 180°, pausing for one second at each position.

===== Steps =====

=== Step 1: Include Servo Library ===
<code c>
#include <Servo.h>
</code>

=== Step 2: Initialize Servo Object ===
Declare a servo object and assign it a pin:
<code c>
Servo myServo;
const int servoPin = 10;
</code>

=== Step 3: Setup ===
Attach the servo object to the servo pin:
<code c>
void setup() {
  myServo.attach(servoPin);
}
</code>

=== Step 4: Control Loop ===
Program the servo rotation sequence:
<code c>
void loop() {
  myServo.write(0);    // Move to 0 degrees
  delay(1000);         // Wait 1 second

  myServo.write(90);   // Move to 90 degrees
  delay(1000);         // Wait 1 second

  myServo.write(180);  // Move to 180 degrees
  delay(1000);         // Wait 1 second
}
</code>

===== Validation =====
Observe the servo motor rotate precisely to the angles 0°, 90°, and 180°, pausing clearly at each position.

===== Troubleshooting =====
If the servo does not move or jittering occurs:
  * Check the servo connections (signal to pin 10, power, and ground).
  * Ensure power supply is stable (servo typically requires 5V).
  * Verify servo library inclusion and pin assignment.