Introduction

S_M_I_L_E is an interactive sound and light device. It invites people to take a picture by shouting into a tube while seeing their voices travel in a stream of light. Once the tube turns green the camera takes a picture.

Diagram of Complete Workflow

Process

The system works by sending data from a noise sensor to different M5Stack receivers. These receivers run the data through their designated codes and translate them into a physical response. One M5Stack is responding with a light value that goes from red to green. Once the user reaches a high enough value, by saying S_M_I_L_E, the complete LED strip lights up. This high value is communicated to the second M5Stack where it triggers a servo motor that uses a mechanical adapter, and it pushes a button that is connected with a camera device that takes the picture.

“To get a picture, shout aloud, the tube lights green, and S_M_I_L_E!”

Technical Components and Remote WIFI Connection

Arduino Code

Arduino Noise Sensor Send

void loop() {  int sensorValue = analogRead(signalPin);

Serial.println(sensorValue);

Arduino Code LEDStrip Receive

void loop() {

  int red = map(sensorValue, 0, 750, 255, 0);
  int green = map(sensorValue, 0, 750, 0, 255);
  int ledNum = map(sensorValue, 0, 750, 1, 21);
  
  if (sensorValue<50) {
    for(int i=0;i<21;i++){
      pixels.setPixelColor(i, pixels.Color(0, 0, 0));//Black   
    }
  }else{
    for(int i=0;i<21;i++){
      pixels.setPixelColor(i, pixels.Color(0, 0, 0));//Black  
    }
    for(int i=0;i<ledNum;i++){
    pixels.setPixelColor(i, pixels.Color(red, green, 0));//Color
    }
  }
  pixels.show();

Arduino Code Servo Motor Receive

void loop() {

 if(sensorValue!=lastSensorValue){
    plotValue(sensorValue);
    Serial.print("Sensor Value Received: ");
    Serial.println(sensorValue);


if (sensorValue<750){
     Serial.println("L_O_U_D_E_R");
      myServo.write(0);
      //delay(1000);

  }else if(sensorValue>=750){
     Serial.println("S_M_I_L_E");
      myServo.write(140);
      delay(1000);
      myServo.write(0);
      delay(5000);   
   }

Physical Components and Remote WIFI Connection

S_M_I_L_E is a project of IAAC, Institute for Advanced Architecture of Catalonia developed in the Master of Advanced Architecture 2020/21 by Students: Alexander Dommershausen, Aqeel Sourjah, Elena Petruzzi and Faculty: Angel Muñoz, Cristian Rizzuti