PC switch

You are too lazy to turn on your computer by pressing a button? Need a more practical solution?
I'll show you the BEST way to do it!

What you will need:

  • arduino
  • 6 wires
  • a servo motor
  • a sound sensor
  • some tape to stabilize the servo motor
elements

Circuit:

circuit

We connect the servo motor to 3.3V, GND and D3; and we connect the sound sensor to 5V, GND and D2.

Code:


    #include <Servo.h> // We need to include this library to use the servo motor.

    int soundPin = 2; // Sound sensor to D2.
    int servoPin = 3; // Servo motor to D3.
    int soundDetection;

    Servo Myservo; // We name the servo.

    void setup() {
    pinMode(soundPin, INPUT);
    Myservo.attach(servoPin);
    }

    void loop() {
    soundDetection = digitalRead(soundPin); // We save the value of the sound sensor in this variable. It can be only 0 or 1.
    
    if (soundDetection == 1){ // If the sensor detects sound the servo moves.
        Myservo.write(45);
        delay(500);
        Myservo.write(0);
        delay(500);
    }
    }

If something doesn't work, try to adjust the potentiometer of the sound sensor.

Result:

Just clap 👏 and your computer will turn on (or off)!

I had to put some weight on the servo because the tape didn't hold it properly. 🙄