AR-B10: Car Wiper System using Servo Motor

In this code when the button is pressed, the servo motor starts rotating smoothly from 0 – 90 and then 90 – 0. When the button is released, the motor restores back to angle 0.

#include <Servo.h>
Servo i;
int angle = 0;
int sw = 7; // connect button between pin-7 and ground
                      
void setup()
{
  i.attach(3);
  pinMode(sw,INPUT_PULLUP);
  i.write(0);
}

void loop()
{
  while(digitalRead(sw)==LOW)
  {
    for(angle=0;angle<100;angle++)
    {
      i.write(angle);
      delay(5);
    }
    delay(100);

    for(angle=100;angle>0;angle--)
    {
      i.write(angle);
      delay(5);
    }
    delay(100);
  }
}

Important: In some cars the sweeping angle of wipers may be up to 100 degree. So you can change the value of 90 degree to 100 degree.