Alexis Santiago Allende
Published © GPL3+

Arduino 101 Home BLE System

My project presents a domotic box with several features that can be controlled with an app, using Bluetooth low energy

AdvancedFull instructions providedOver 1 day4,234
Arduino 101 Home BLE System

Things used in this project

Hardware components

Arduino 101 & Genuino 101
Arduino 101 & Genuino 101
×1
SmartThings relay 4 channel
×1
DHT22 Temperature Sensor
DHT22 Temperature Sensor
×1
Ultrasonic Sensor - HC-SR04 (Generic)
Ultrasonic Sensor - HC-SR04 (Generic)
×1
LED (generic)
LED (generic)
×1
RGB Diffused Common Cathode
RGB Diffused Common Cathode
×1
RobotGeek Light Sensor
RobotGeek Light Sensor
×1
Resistor 10k ohm
Resistor 10k ohm
×1
Standard LCD - 16x2 White on Blue
Adafruit Standard LCD - 16x2 White on Blue
×1
Breadboard (generic)
Breadboard (generic)
×1
Jumper wires (generic)
Jumper wires (generic)
×1
9V 1A Switching Wall Power Supply
9V 1A Switching Wall Power Supply
×1

Software apps and online services

Arduino IDE
Arduino IDE
MIT App Inventor 2
MIT App Inventor 2

Story

Read more

Schematics

Circuit

Code

Pandhoit

Arduino
/*Made by Alexis Santiago Allende Last Update 25/03/17 Pandhoit system version 1.0*/
#include <CurieBLE.h>
BLEPeripheral blePeripheral;//BLE Peripheral Device (Arduino Device)
BLEService pandhoit("19b10010-e8f2-537e-4f6c-d104768a1214"); // BLE pandhoit Service
//include the CurieTime Library
#include <CurieTime.h>
// BLE pandhoit buttons Characteristic - custom 128-bit UUID, read and writable by central
BLEUnsignedCharCharacteristic buttons("19b10011-e8f2-537e-4f6c-d104768a1214", BLERead | BLEWrite);
// BLE sensor rate Characteristic"
BLEUnsignedIntCharacteristic sensors("19b10012-e8f2-537e-4f6c-d104768a1214", BLERead | BLENotify);
//DHT 22 library 
#include "DHT.h"
#define DHTPIN 8
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
//LCD library
#include <LiquidCrystal.h>
LiquidCrystal lcd(15, 14, 19, 18, 17, 16);

long ts;// pin to use for time of ultasensor
long ds;// pin to use for distance
long previousMillis = 0;  // last time the sensor was checked, in ms
long previoustime = 0;  // last time the sensor was checked, in ms
const int c1 = 2; // pin to use for the light state
const int c2 = 3;// pin to use for the light state
const int c3 = 4; // pin to use for buzzer (alarm)
const int c4 = 5;// pin to use for light sensor
const int d1 = 13; // pin to use for the out control
const int d2 = 12;// pin to use for  the out control
const int d3 = 11; // pin to use for the out control
const int d4 = 10;// pin to use for the out control
const int d5 = 9; // pin to use for the out control (light sensor)
int send_data, datachoice; //  reading from sensor
int tempe=0,humedad=0;//variables for read temperature and humidity
//boolean variables for use to (a)button 1,(b)button 2,(c)button 3,(d)button 4,(e,g)button 5
//(f,g)button 7, (g) lighsensor,
boolean a = LOW, b = LOW,c=LOW,d=LOW,e=LOW,f=LOW,g=LOW,h=LOW,i=LOW,j=LOW,k=LOW,l=LOW,m=LOW,n=LOW,o=LOW,p=LOW,q=LOW; //Control variables
const int Trigger = 6;   //Pin digital 2 para el Trigger del sensor
const int Echo = 7;   //Pin digital 3 para el Echo del sensor


void setup() {
  lcd.begin(16, 2);  // LCD starts
  //set cursor to column 0, row 0
  lcd.setCursor(0,0);
  dht.begin();//sensor begin
  //set time to 1:35:24 on April 4th, 2016. Can you change to your time / date
  setTime(16, 56, 24, 3, 07, 2017);
  pinMode(c1, OUTPUT);//light state
  pinMode(c2, OUTPUT);//light state
  pinMode(c3, OUTPUT);//alarm(buzzer)
  pinMode(c4, INPUT); //light sensor
  pinMode(d1, OUTPUT);//relay module output 1
  pinMode(d2, OUTPUT);//relay module output 2
  pinMode(d3, OUTPUT);//relay module output 3
  pinMode(d4, OUTPUT);//relay module output 4 (light sensor control)
  pinMode(d5, OUTPUT);
  pinMode(Trigger, OUTPUT); 
  pinMode(Echo, INPUT); 
  digitalWrite(Trigger, LOW);
  // set advertised local name and service UUID:
  blePeripheral.setLocalName("Pandhoit");
  blePeripheral.setAdvertisedServiceUuid(pandhoit.uuid());
  // add service and characteristic:
  blePeripheral.addAttribute(pandhoit);//service 
  blePeripheral.addAttribute(buttons);// add the buttons characteristic
  blePeripheral.addAttribute(sensors); // add the sensor characteristic
  // set the initial value for the characeristic:
  buttons.setValue(1);
  // begin advertising BLE Light service:
  blePeripheral.begin();
  digitalWrite(c1, HIGH);//Turn on the red indicator light
  lcd.print("No connected!");     // print a simple message
  //set cursor to column 0, row 1
  lcd.setCursor(0,1);
  lcd.print("Time:");     // print a message


}

void loop() {
  //digitalWrite(c3, LOW);//alarm turn off
  lightsens();//When the system is deactivated, the light sensor is activated for light control
  ultra();//When the system is deactivated, the distance sensor is activated for intruder alarm control
   //create a character array of 8 characters for the time
 char clockTime[8];
 //use sprintf to create a time string of the hour, minte and seconds
 sprintf(clockTime, "%2d:%2d:%2d", hour(), minute(), second());
  //set cursor to column 6, row 1
 lcd.setCursor(6, 1);
 //print the time string over lcd
 lcd.print(clockTime);
  // listen for BLE peripherals to connect:
  BLECentral central = blePeripheral.central();
  // if a central is connected to peripheral:
  if (central) {
    digitalWrite(c1, LOW);//Turn off the red indicator light
    digitalWrite(c2, HIGH);//Turn on the blue indicator light
    
    // while the central is still connected to peripheral:
    while (central.connected()) {
      if(o==LOW){
      lcd.clear();//clear lcd display
      lcd.setCursor(0,0);
      lcd.print("App connected!");     // print a message
      lcd.setCursor(0,1);
      lcd.print("Temp:");     // print a message
      lcd.setCursor(7,1);
      lcd.print("C");     // print a message
      lcd.setCursor(9,1);
      lcd.print("Hum:");     // print a message
      lcd.setCursor(15,1);
      lcd.print("%");     // print a message
      o=HIGH;
      }

      // if the remote device wrote to the characteristic,
      // use the value to control the leds:
      if (buttons.written()) {
        change();// If in the app, I press a button then something happens
      }
       if (g==HIGH) {//if botton of light sensor was pressed then this sensor is activate to control d4 output
        lightsens();
       }
        if (i==HIGH) {//if botton of temp sensor was pressed then this sensor is activate to control c3 alarm
        tempalert();
       }
       if (l==HIGH) {//if botton of ultrasonic sensor was pressed then this sensor is activate to control c3 alarm
       ultra();
       }
       
      long currentMillis = millis();
      // if 10s have passed, check the sensor:
      if (currentMillis - previousMillis >= 10000) {
        previousMillis = currentMillis;
        updateSensor();
      }
      //finish
    }
    // when the central disconnects, print it out:
    Serial.print(F("Disconnected from central: "));
    Serial.println(central.address());
    digitalWrite(c1, HIGH);//Turn on the red indicator light
    digitalWrite(c2, LOW);////Turn off the blue indicator light
    if(o==HIGH){
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("No connected!");     // print a message
    lcd.setCursor(0,1);
    lcd.print("Time:");     // print a message
    o=LOW;
    }
  }
  else
  {
    digitalWrite(c1, HIGH);//Turn on the red indicator light
    digitalWrite(c2, LOW);////Turn off the blue indicator light

  }
}

void updateSensor() { //function to read and send temperature and humidity
  tempe=dht.readTemperature();
  humedad =dht.readHumidity();
  int humedad1 =100+humedad;

if (datachoice == 0)
      {
        send_data = tempe;//send temperature
        datachoice = 1;
        lcd.setCursor(5,1);
        lcd.print(tempe);     // print a message
        
      }
      else if(datachoice == 1)
      {
        send_data = humedad1; //send humidity
        datachoice = 0;  
        lcd.setCursor(13,1);
        lcd.print(humedad);     // print a message
      }

  sensors.setValue(send_data);
  
}

void lightsens()//function to able and disabled lightsensor
{
  if(digitalRead(c4)==LOW)
   {
    digitalWrite(d4, LOW);
   }
   else
   {
    digitalWrite(d4, HIGH);
   }
}

void change()//function to read values obtained in the app
{
       if (buttons.value() == '1' && a == LOW) { // 1 in ASCII

          digitalWrite(d1, HIGH);         // will turn the LED on
          a = HIGH;
        } else if (buttons.value() == '1' && a == HIGH)  {  //when 1 was read again (second time)          

          digitalWrite(d1, LOW);          // will turn the LED off
          a = LOW;
        }

        if (buttons.value() == '2' && b == LOW) { // 2 in ASCII

          digitalWrite(d2, HIGH);         // will turn the LED on
          b = HIGH;
        } else if (buttons.value() == '2' && b == HIGH)  { //when 2 was read again (second time)  

          digitalWrite(d2, LOW);          // will turn the LED off
          b = LOW;
        }
        if (buttons.value() == '3' && c == LOW) { // 3 in ASCII

          digitalWrite(d3, HIGH);         // will turn the LED on
          c = HIGH;
        } else if (buttons.value() == '3' && c == HIGH)  { //when 3 was read again (second time)  

          digitalWrite(d3, LOW);          // will turn the LED off
          c = LOW;
        }

        if (buttons.value() == '4' && e == LOW&& g==LOW) { // 4 in ASCII

          digitalWrite(d4, HIGH);         // will turn the LED off
          e = HIGH;
        } else if (buttons.value() == '4' && e == HIGH && g==LOW)  { //when 4 was read again (second time)  

          digitalWrite(d4, LOW);          // will turn the LED off
          e = LOW;
        } 

        if (buttons.value() == '5' && d == LOW) { // 5 in ASCII
            
          l = HIGH;//able ultrasonic sensor
          d=HIGH;
        } else if (buttons.value() == '5'&& d==HIGH)  { //when 5 was read again (second time)  

          
          l = LOW;//disable ultrasonic sensor
          d=LOW;
        } 
         if (buttons.value() == '6' && h == LOW && i==LOW) { // 6 in ASCII

          digitalWrite(c3, HIGH);         // will turn the alarm(buzzer) on
          h = HIGH;
        } else if (buttons.value() == '6' && h == HIGH && i==LOW)  { //when 6 was read again (second time)  

          digitalWrite(c3, LOW);          // will turn the alarm(buzzer) off
          h = LOW;
        } 
        if (buttons.value() == '7' && f == LOW) { // 7 in ASCII

       
          g = HIGH;//able light sensor
          f=HIGH;
        } else if (buttons.value() == '7'&&f==HIGH)  { //when 7 was read again (second time)  

          
          g = LOW;//disable light sensor
          f=LOW;
        } 
          if (buttons.value() == '8' && j == LOW) { // 8 in ASCII
            
          i = HIGH;//able temperature sensor
          j=HIGH;
        } else if (buttons.value() == '8'&& j==HIGH)  { //when 8 was read again (second time)  

          
          i = LOW;//disable temperature sensor
          j=LOW;
        } 

      }
void ultra(){//function to read and control ultrasonic sensor
  digitalWrite(Trigger, HIGH);
  delayMicroseconds(10);          //Send a pulse of 10us
  digitalWrite(Trigger, LOW);
  
  ts = pulseIn(Echo, HIGH); //obtain width of pulse
  ds = ts/59;             //change value to centimeters
  if(ds<30
  && m==LOW){//if distance is lower than 5 centimeter then able  alarm
    digitalWrite(c3,HIGH);
    m=HIGH;
    n=LOW;
  }
  else if(ds>=30&&n==LOW)//if distance is upper than 5 centimeter then disable  alarm
  {
    digitalWrite(c3,LOW);
    n=HIGH;
    m=LOW;
  }
}

void tempalert()//function to control temperature between 24 and 25 degrees 
{
     if(tempe>=25 && p==LOW)//if temperature above of 25 degrees
    {
      digitalWrite(c3,HIGH);//turn on alarm
      p=HIGH;
      q=LOW;
     
    }
    else if(tempe<=24&&q==LOW)//if temperature is under 24 degrees
    {
      p=LOW;
      q=HIGH;
      digitalWrite(c3,LOW);//turn off alarm
    }
  
}

Pandhoit.aia

Arduino
App inventor project code
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Credits

Alexis Santiago Allende

Alexis Santiago Allende

0 projects • 60 followers
Im a person who since young feel a passion for electronics, I also like to cook pizza and travel. Now Im working on the internet of things

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