Home Automation by Withour Any Switch and Using Sensors

Apparatus required:

1x Ultrasonic sensor

1x Arduino Atmega328

1x Relay

1x fan

Connecting wires As required

Step 1: Upload the program given below in to Arduino board

Step 2: Connect the Arduino and Ultrasonic sensor in to the pins trigPin-13, echoPin-12

Step 3: Connect relay to Arduino pin 2 and motor to relay

Step 3: Now click serial monitor in the Arduino software

Step 4: Move your sensor and find distance approx,

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