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 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 relays are operated by electromagnetic into the mechanical switch.
  • It can be used to operate as the switch.
Figure 2 - Relay
Connection
Step 1 - Connection From Arduino mega To Sound Sensor
  • Connect the Vin pin of the sound sensor to the 13 of the Arduino board.
  • Connecte the VCC pin of the sound sensor to the 5v of the Arduino board.
  • Connect the gnd pin of the sound sensor to the gnd of the Arduino board.
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 Arduino board.
  • Connect the bulb or led as it the positive side and the negative side.
Programming
  1. int soundSensor = 13;
  2. int relay = 12;
  3. int claps = 0;
  4. long detectionSpanInitial = 0;
  5. long detectionSpan = 0;
  6. boolean lightState = false;
  8. void setup() {
  9. pinMode(soundSensor, INPUT);
  10. pinMode(relay, OUTPUT);
  11. }
  13. void loop() {
  15. int sensorState = digitalRead(soundSensor);
  17. if (sensorState == 0)
  18. {
  19. if (claps == 0)
  20. {
  21. detectionSpanInitial = detectionSpan = millis();
  22. claps++;
  23. }
  24. else if (claps > 0 && millis()-detectionSpan >= 50)
  25. {
  26. detectionSpan = millis();
  27. claps++;
  28. }
  29. }
  31. if (millis()-detectionSpanInitial >= 400)
  32. {
  33. if (claps == 2)
  34. {
  35. if (!lightState)
  36. {
  37. lightState = true;
  38. digitalWrite(relay, HIGH);
  39. }
  40. else if (lightState)
  41. {
  42. lightState = false;
  43. digitalWrite(relay, LOW);
  44. }
  45. }
  46. claps = 0;
  47. }
  48. }
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