August 20th - Sound Sensor Unit Part 2

 Relays, Relays, Relays!

Other than that not much. Did some light soldering work, changed the board from a uno to a nano, and added the relay. Just routing the power out via a female plug connector I "borrowed" from an extension cord. So now my uncle can utilize anything that can be connected to a standard AC wall outlet. Plus, the relay is rated for 40 Amps, so there isn't much that can't be powered

I just am going to make a few functionality changes, so that if the sound ever goes over a certain point you would have to press a button to deactivate whatever device that has been connected. Not that hard, I can already imagine the code. Anyway speaking of the code, here's the script for this project. I didn't have time to draw a schematic, but I think it is very self explanatory.

int soundSensor = 2;

int relayPin = 3;

void setup() {

  pinMode(soundSensor, INPUT);

  Serial.begin(9600);

  pinMode(relayPin, OUTPUT);

}

void loop() {

  int SensorData = digitalRead(soundSensor);

  if (SensorData == 1) {

    digitalWrite(relayPin, HIGH);// set relay pin to HIGH

    Serial.println("Relay ON ");

  }

  else {

    digitalWrite(relayPin, LOW);// set relay pin to LOW

    Serial.println("Relay OFF ");

  }

}

Final Component List

1 Arduino Nano

1 Extension Cable

 

A Bit of questionable soldering

1 Relay (link)

1 Sound Sensor (link)