Team Group:08:

Liam Childers

•

Jacob Joyner

•

Joshua Cecil

Published November 23, 2019

Please Be Quiet

This device will monitor sound levels throughout the night and let you know if you are being too loud by flashing an LED.

IntermediateFull instructions provided710

Things used in this project

Hardware components

Particle Argon

Solderless Breadboard Half Size

Breadboard (generic)

Big Sound

Adafruit Standard LCD - 16x2 White on Blue

Jumper wires (generic)

breadboard Trimpot 10k

LED (generic)

Software apps and online services

Cura

Creo PTC

ThingSpeak API

Hand tools and fabrication machines

3D Printer (generic)

Story

Please Be Quiet is project that monitors sound level throughout the night and if a sound is too loud it will blink an LED asking you to be quiet and will tell you in the morning how many times the sensor was activated.

We decided to make this project because as engineering students we study late into the night and sometimes our roommates are not on the same schedule as us. So instead of asking them every time they are loud, instead we can leave a device outside their room that flashes when they are too loud and in the morning they can see how many times the device flashed and when the last disruption was.

This device works by having a high sensitivity sound sensor connected to a particle argon. When the sound sensor detects a noise to loud, it sends a signal to the disruption panel telling the particle argon in the panel that there was a disruption at a certain time which is displayed on a LCD screen. In return, the disruption panel sends a signal pack to the sensor argon telling it to blink the LED light to notify that the previous noise was too loud. The data is also sent to ThingSpeak to show a visual graph of noise disturbances throughout the night. (https://thingspeak.com/channels/918447)

A video of our project in action can be found here: https://youtu.be/to2Jj9Y_Sbw

Schematics

Code

int big_sound = D5;
int led1 = D3;
int led2 = D7;
int micState;
int loud = 1;
int quiet = 0;

void setup() {
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(big_sound, INPUT);
  digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
}

void loop() {

micState = digitalRead(big_sound);
if(micState == HIGH)
{
    Mesh.publish("PleaseBeQuiet-L");
    for (int i=1; i <= 25; i++)
    {
    digitalWrite(led2, HIGH);
    delay(50);
    digitalWrite(led2, LOW);
    delay(50);
    }
}
else
{
    digitalWrite(led1, LOW);
    digitalWrite(led2, LOW);
   
}

Mesh.subscribe("PleaseBeQuietReturnSignal-L", BlinkReallyFast);

}


void BlinkReallyFast(const char *event, const char *data)
{
    for (int i=1; i <= 25; i++)
   {
    digitalWrite(led1, HIGH);
    //digitalWrite(led2, HIGH);
    delay(50);
    digitalWrite(led1, LOW);
    //digitalWrite(led2, LOW);
    delay(50);
    }
}

#include <LiquidCrystal.h>


LiquidCrystal lcd(7,6,5,4,3,2);

void setup() {
 lcd.begin(16,2);
 lcd.print("Waiting For Event");
 Time.zone(-5);
 
}
int quiet = 0;
void loop() {

  Mesh.subscribe("PleaseBeQuiet-R", Right_LCD);
  Mesh.subscribe("PleaseBeQuiet-L", Left_LCD);
 
  for (int positionCounter = 0; positionCounter < 5; positionCounter++) {
    // scroll one position left:
    lcd.scrollDisplayLeft();
    // wait a bit:
    delay(500);
  }
 Particle.publish("PleaseBeQuiet-R", String(quiet) , PUBLIC);
 Particle.publish("PleaseBeQuiet-L", String(quiet) , PUBLIC);
  //if Time.timeStr()
}
int NR = 1;
int loud = 100;

void Right_LCD(const char *event, const char *data)
{
    delay(15000);
    Mesh.publish("PleaseBeQuietReturnSignal-R");
    Particle.publish("PleaseBeQuiet-R", String(loud) , PUBLIC);
    lcd.begin(16,2);
    lcd.setCursor(0,0);
    lcd.print("Right side was loud " + String(NR) + " times last night.   ");
    lcd.setCursor(0,1);
    lcd.print("Last event was " + Time.timeStr());
    NR = NR + 1;
   
}
int NL = 1;
void Left_LCD(const char *event, const char *data)
{
    delay(15000);
    Mesh.publish("PleaseBeQuietReturnSignal-L");
    Particle.publish("PleaseBeQuiet-L", String(loud) , PUBLIC);
    lcd.begin(16,2);
    lcd.setCursor(0,0);
    lcd.print("Left side was loud " + String(NL) + " times last night.");
    lcd.setCursor(0,1);
    lcd.print("Last event was " + Time.timeStr());
    NL = NL + 1;
   
}

Credits

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Please Be Quiet