Team IOT Group 56 Spring 2023:

Chandler Scovern

•

BenJ

•

William L

Published December 4, 2023 © GPL3+

Temperature, Light, and Noise Detection System

Be lazy with this full complete monitoring system which allows you to check activities in various rooms while you're not there.

IntermediateFull instructions provided3 hours340

Temperature, Light, and Noise Detection System

Things used in this project

Hardware components

Breadboard (generic)

Jumper wires (generic)

Particle Photon

Tactile Switch, SPST-NO

DHT11 Temperature & Humidity Sensor (3 pins)

Adafruit Standard LCD - 16x2 White on Blue

Resistor 47.5k ohm

Single Turn Potentiometer- 10k ohms

ELEGOO 37-in-1 Sensor Module Kit V1.0

Needed Components: Ky-028 Module, Ky-030 Module, Ky-018 Module

Software apps and online services

Microsoft Visual Studio 2017

Story

Have you ever wanted to know what the temperature variation across the rooms in your house is? What about seeing if you left the lights on? What if we could monitor the status of our house and rooms from anywhere? With this device, you would never have to ask those questions again. This monitoring system will allow users to check for various activities at your home, even while you are far away! The things you can check for include if the lights are on, if there is a lot of noise, or even just the temperature in different rooms of your house.

The way this device works is by having a series of different modules that can be located in different rooms of the persons choosing. The main device with the LCD display receives data from the other two modules. The user can use two buttons to select which data is shown on screen. The other devices contain sensors, and publish that sensor data. Both secondary modules contain thermometers, while one contains a microphone and the other a light sensor. These can be used in conjunction with the LCD module to see what the activity is in other rooms without having to be in the room. You don't even have to put these in your home, you could put these anyplace you could want to monitor! Besides that, this device could be useful even for road trips since the data is viewable from anyplace on the world.

Pictures:

1 / 6

Device Showcase

Live sensor readings from ThingSpeak:

Temperature: https://thingspeak.com/channels/2367131

Temperature 2: https://thingspeak.com/channels/2361968

Light Readings: https://thingspeak.com/channels/2367127

DHT Temperature

Light Sensor

Thermistor Temperature Reading

Communications flow chart:

Flow Chart

Code

/* 
 * IOT Project 
 * Author: Ben Janke
 * Date: November 22, 2023
 */

// Include Particle Device OS APIs
#include "Particle.h"
#include "Adafruit_Sensor.h"
#include "DHT.h"
#include "DHT_U.h"


SYSTEM_MODE(AUTOMATIC);

SYSTEM_THREAD(ENABLED);

SerialLogHandler logHandler(LOG_LEVEL_INFO);

//Define Pins
int humiditySensor = A2;
int microphone = A5;
//Set Time Delay in Seconds
int timeDelay = 80;

//Setup DHT
DHT dht(humiditySensor, DHT11);

void publishData() {
  int temp = dht.readTemperature();
  delay(1000);
  int humidity = dht.readHumidity(true);
  delay(1000);
  if (humidity > 0) {
    Particle.publish("Humidity1",  String(humidity));
  }
  if (temp > 0) {
    Particle.publish("Temperature1", String(temp));
  }
  delay(1000);
  if (digitalRead(microphone) == HIGH) {
    Particle.publish("Microphone", String(1));
  }
  else {
    Particle.publish("Microphone", String(0));
  }
}
void call(const char *eventName, const char *data) {
  publishData();
}
void setup() {
  dht.begin();
  pinMode(humiditySensor, INPUT);
  pinMode(microphone, INPUT);
  Particle.subscribe("device1Call", call);
}

void loop() {
  delay(1000*timeDelay);
  publishData();
}

/* 
 * IOT Project
 * Author: Ben Janke
 * Date: 12/2/2023
 */

// Include Particle Device OS APIs
#include "Particle.h"
#include "LiquidCrystal.h"

SYSTEM_MODE(AUTOMATIC);

SYSTEM_THREAD(ENABLED);

//Define Pins
int buttonOne = D10;
int buttonTwo = D6;
LiquidCrystal lcd(D0, D1, D2, D3, D4, D5);

int selectedDevice = 1;
int selectedMode = 1;
bool isButtonOnePressed = false;
bool isButtonTwoPressed = false;

int lastTemp = 22;
int lastHumidity = 22;
int lastNoise = 4444;

int lastTemp2 = 333;
int lastLight = 4444;

SerialLogHandler logHandler(LOG_LEVEL_INFO);

void changeLCDData(int mode, int device) {
  lcd.clear();
  lcd.setCursor(0, 1);
  lcd.print(String(mode) + " " + String(device));
  if (device == 1) {
    if (mode == 1) {
      lcd.setCursor(0, 0);
      lcd.print(lastTemp2);
      lcd.print(" Celsius"); 
    }
    else {
      lcd.setCursor(0, 0);
      if (lastLight == 0) {
        lcd.print("No");
      }
      else if (lastLight == 1) {
        lcd.print("Low");
      }
      else {
        lcd.print("High");
      }
      lcd.print( " light level");
    }
  }
  else if (device ==2){
    if (mode == 1) {
      lcd.setCursor(0, 0);
      lcd.print(lastTemp);
      lcd.print(" Celsius");
    }
    else {
      lcd.setCursor(0, 0);
      if (lastNoise == 0) {
        lcd.print("Quiet");
      }
      else {
        lcd.print("Noisy");
      }
    }
  }
}
void recieveTemperature1(const char *event, const char *data) {
  lastTemp = atoi(data);
  changeLCDData(selectedMode, selectedDevice);
}
void recieveMicrophone(const char *event, const char *data) {
  lastNoise = atoi(data);
  changeLCDData(selectedMode, selectedDevice);
}
void recieveLight(const char *event, const char *data) {
  lastLight = atoi(data);
  changeLCDData(selectedMode, selectedDevice);
}
void recieveTemperature2(const char *event, const char *data) {
  lastTemp2 = atoi(data);
  changeLCDData(selectedMode, selectedDevice);
}

//Setup subscribe events
void setup() {
 pinMode(buttonOne, INPUT);
 pinMode(buttonTwo, INPUT);
 Particle.subscribe("Temperature1", recieveTemperature1);
 Particle.subscribe("Microphone", recieveMicrophone);
 Particle.subscribe("LightReading", recieveLight);
 Particle.subscribe("TempReading2", recieveTemperature2);
 lcd.begin(16,2);
}

void loop() {
  delay(1000);
  if (digitalRead(buttonOne)== HIGH && isButtonOnePressed == false) {
    isButtonOnePressed = true;
    if (selectedDevice == 1) {
      selectedDevice = 2;
      Particle.publish("device2Call");
    }
    else {
      selectedDevice = 1;
      Particle.publish("device1Call");
    }
    changeLCDData(selectedMode, selectedDevice);
  }
  else if (digitalRead(buttonOne) == LOW) {
    isButtonOnePressed = false;
  }
  if (digitalRead(buttonTwo) == HIGH && isButtonTwoPressed == false) {
    isButtonTwoPressed = true;
    if (selectedDevice == 1) {
      Particle.publish("device1Call");
      if (selectedMode == 1) {
        selectedMode = 2;
      }
      else {
        selectedMode = 1;
      }
    }
    if (selectedDevice == 2) {
      Particle.publish("device2Call");
      if (selectedMode < 2) {
        selectedMode++;
      }
      else {
        selectedMode = 1;
      }
    }
    changeLCDData(selectedMode, selectedDevice);
  }
  else if (digitalRead(buttonTwo) == LOW) {
    isButtonTwoPressed = false;
  }
}

/* 
 * IOT Project
 * Author:  Ben Janke
 * Date: November 23, 2023
 */

// Include Particle Device OS APIs
#include "Particle.h"

SYSTEM_MODE(AUTOMATIC);

SYSTEM_THREAD(ENABLED);

SerialLogHandler logHandler(LOG_LEVEL_INFO);

//Define Pins
int readingTemp;
int readingLight;
int tempSensor = A5;
int lightSensor = A1;
int timeDelay = 80;

int interpolateThermistor(int value) {
  int x = (-0.0673*value)+83.274;
  return x;
}
void publishData(){
  if (readingLight > 3943) {
    Particle.publish("LightReading", String(0));
  }
  else if (readingLight > 3000) {
    Particle.publish("LightReading", String(1));
  }
  else {
    Particle.publish("LightReading", String(2));
  }
  delay(1000);
  Particle.publish("TempReading2", String(interpolateThermistor(readingTemp)));
}
void call(const char *eventName, const char *data) {
  publishData();
}
void setup() {
  pinMode(tempSensor, INPUT);
  pinMode(lightSensor, INPUT);
  Particle.subscribe("device2Call", call);
}

void loop() {
  delay(1000*timeDelay);
  readingTemp = analogRead(tempSensor);
  readingLight = analogRead(lightSensor);
  publishData();
}

Temperature, Light, and Noise Detection System

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

DHT and Microphone Wiring

LCD display module

Thermistor and light sensor module

Code

DHT and microphone module code

LCD display module

Light sensor and thermistor module

Credits

Chandler Scovern

BenJ

William L

Comments

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Temperature, Light, and Noise Detection System

Temperature, Light, and Noise Detection System

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

DHT and Microphone Wiring

LCD display module

Thermistor and light sensor module

Code

DHT and microphone module code

LCD display module

Light sensor and thermistor module

Credits

Chandler Scovern

BenJ

William L

Comments

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