Making The Clap Switch Using Arduino Mega 2560

Introduction

• In this article I will explain about making the clap switch by using ArduinoMega2560.
• It can be used to operate by making sound
• When the sound is produced it can be automatically ON. 

Parts Of Lists

• ArduinoMega2560
• Sound Sensor
• Relay
• Bulb or Led
• HookUp wires 

Sound sensor

• It can find the sound easily by the sound nature.
• It can detect the sound of the environment.
• It can have the three pin standard.

                                   

                          Figure 1 - Sound Sensor. 

Relay

• A relay is an electrically operated switch
• Many relay are operated by electromagnetic into mechanical switch.
• It can be used to operate as the switch.
                          

                                       Figure 2 - Relay

 

Connection

Step 1 - Connection From Arduino mega To Sound Sensor

• Connecte the Vin pin of the sound sensor to the 13 of the Arduinoboard.
• Connecte the vcc pin of the sound sensor to the 5v of the Arduinoboard.
• Connect the gnd pin of the sound sensor to the gnd of the Arduinoboard. 

Step 2 - Connection From Relay To ArduinoMega2560

• Connect the same procedure as the sound sensor of vcc and Gnd.
• Connect the Vin of the relay to the 12 of the Arduinoboard.
• Connect the bulb or led as it the postive side and the negative side. 

Programming

int soundSensor = 13;
int relay = 12;
int claps = 0;
long detectionSpanInitial = 0;
long detectionSpan = 0;
boolean lightState = false;

void setup() {
  pinMode(soundSensor, INPUT);
  pinMode(relay, OUTPUT);
}

void loop() {

  int sensorState = digitalRead(soundSensor);

  if (sensorState == 0)
  {
    if (claps == 0)
    {
      detectionSpanInitial = detectionSpan = millis();
      claps++;
    }
    else if (claps > 0 && millis()-detectionSpan >= 50)
    {
      detectionSpan = millis();
      claps++;
    }
  }

  if (millis()-detectionSpanInitial >= 400)
  {
    if (claps == 2)
    {
      if (!lightState)
        {
          lightState = true;
          digitalWrite(relay, HIGH);
        }
        else if (lightState)
        {
          lightState = false;
          digitalWrite(relay, LOW);
        }
    }
    claps = 0;
  }
}

Explanation

• It can be used to generate the bulb as the sound of the clap
• It can work with the function of the clap as the fixed. 

Output               

 
                                                  Figure 3 - Output