9.5 Coding using Arduino IDE

2. Now, clear the page open in Arduino IDE and then include the servo library.Next, we will define a variable named “servoPin” with integer data type to assign which pin we are using of Arduino UNO.

Expression :

#include
int servoPin = 9;

3. Now, Create a LIBRARY OBJECT FILE (.o) that is linked with programs which use servo library.

Expression :

Servo Servo1;

4. In void setup ( ) function, we need to attach the servo object with the servo pin which er have used. 

Expression :

void setup()

{
// We need to attach the servo to the used pin number
Servo1.attach(servoPin);
}

4. In void loop() function, we write the main code and it run over and over again.first we will make the servo to move to 0 degree, then to 90 degree and then 180 degree.

Note: The servo goes to a specific position depending on the input signal, a continuous rotation servo either rotates clockwise or counter-clockwise at a speed proportional to the signal. For example, the Servo1.write(0) function will make the servomotor spin counter-clockwise at full speed. The Servo1.write(90) function will stop the motor and Servo1.write(180) will turn the motor clockwise at full speed.

Expression: 

void loop(){
// Make servo go to 0 degrees
Servo1.write(0);
delay(1000);
// Make servo go to 90 degrees
Servo1.write(90);
delay(1000);
// Make servo go to 180 degrees
Servo1.write(180);
delay(1000);
}