Model : Automated Windshield Wiper System

This simple project explains how to build a Arduino based model wiper system for vehicles.

A raindrop sensor is used to detect rain.An analog reading is taken from the sensor.

When the raindrop sensor value exceeds a specific limit, the two servo motors will operate after a 10 seconds delay for smooth operation.

The servo motors(both Servo -01 & Servo -02) are controlled by the Arduino to operate between 0-120° degrees.

The LCD Module will always display whether it is raining or not.When it rains, the LCD module will display that the wiper system is activated.

Tools & Components

1 X Arduino Nano

1 X Raindrop Sensor + HL-01 Module

1 X 16x2 LCD Module + i2c Module

2 X Metal Gear Servo Motor

1 X Breadboard

2 X Wiper Blades

Jumper Wires

Suitable arrangement for Wiper mechanism

Connecting Components

Servo -01 Sig. Pin - Arduino Pin D11

Servo -02 Sig. Pin - Arduino Pin D10

Raindrop Sensor Analog Pin - Arduino Pin A0

LCD i2c SCL Pin -Arduino Pin A5

LCD i2c SDA Pin -Arduino Pin A4

Note :

Sensitivity of the raindrop sensor can be adjusted from the HL-01 module.

Raindrop sensor must be mounted on top to detect rain better.

Servo motors require high current when operating.Hence a power supply with 3A rating is suitable for proper operation.

Arduino Code

//2020 CraftyBin@Blogspot
//Author : Chathura H.

#include <Servo.h>
Servo myservo1;
Servo myservo2;

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
myservo1.attach(11);
myservo2.attach(10);
Serial.begin(9600);
lcd.begin();
}
int inputvalue;

void loop() {
inputvalue = analogRead(A0);
Serial.println(inputvalue);
delay(100);

if (inputvalue <= 200)
{lcd.backlight();
lcd.print("Rain Detected");
delay(500);
lcd.clear();
lcd.print("Activating Wiper");
delay(500);
lcd.clear();
delay(10000);

myservo1.write(120);
myservo2.write(120);
delay(1500);
myservo1.write(0);
myservo2.write(0);
delay(1500);
}

else {
lcd.backlight();
lcd.print("Rain Not Detected");
delay(500);
lcd.clear();
myservo1.write(0);
myservo2.write(0);
}
}

Safety First !

Always Connect the power supply if you are absolutely sure that the components are connected correctly without changing polarity and short circuited the wiring.

Even if it seems nothing is wrong : DOUBLE CHECK EVERYTHING !!

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