Project #29 – DFRobot – RHT And MQ – Mk13
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#DonLucElectronics #DonLuc #DFRobot #BLESensorBeacon #AmbientLight #SoilMoisture #SHT40 #FireBeetle2ESP32E #EEPROM #RTC #SD #Display #Adafruit #ESP32 #IoT #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant
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Humidity and Temperature Sensor – RHT03
The RHT03 (also known by DHT-22) is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn’t require extra components so you can get right to measuring relative humidity and temperature.
MQ Series Gas Sensor
The description of each MQ series gas sensor and its uses that follows will be helpful to anybody who wants to understand the foundations of gas sensing technology. The MQ Series Gas Sensor is a revolutionary technology designed for the detection of combustible gases, such as those used in industry and manufacturing. MQ sensor working principle involves detecting changes in electrical conductivity when specific gases come into contact with the sensor’s sensing element. This variety of semiconductor gas sensors makes it possible to measure concentrations of gasses such as alcohol, methane, propane, butane, and carbon monoxide.
Pololu Carrier for MQ Gas Sensors
This carrier board is designed to work with any of the MQ-series gas sensors, simplifying the interface from 6 to 3 pins—ground, power and analog voltage output +3-5 Volt. This board has two mounting holes and provides convenient pads for mounting the gas sensor’s required sensitivity-setting resistor.
DL2405Mk03
1 x DFRobot FireBeetle 2 ESP32-E
1 x Adafruit SHARP Memory Display
1 x Adafruit MicroSD card breakout board+
1 x MicroSD 16 GB
1 x Adafruit DS3231 Precision RTC FeatherWing – RTC
1 x Battery CR1220
4 x Pololu Carrier for MQ Gas Sensors
1 x SparkFun Hydrogen Gas Sensor – MQ-8
1 x 4.7K Ohm
1 x Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9
1 x 22k Ohm
1 x SparkFun Carbon Monoxide Gas Sensor – MQ-7
1 x 10K Ohm
1 x SparkFun Alcohol Gas Sensor – MQ-3
1 x 220k Ohm
1 x Temperature and Humidity Sensor – RHT03
1 x PIR Motion Sensor (JST)
1 x Switch
1 x 1K Ohm
1 x Gravity: Analog Soil Moisture Sensor
1 x Gravity: Analog Ambient Light Sensor
1 x Fermion: SHT40 Temperature & Humidity Sensor
3 x Fermion: BLE Sensor Beacon
3 x CR2032 Coin Cell Battery
1 x 1 x Lithium Ion Battery – 1000mAh
1 x Green LED
1 x Slide Switch
1 x SparkFun Serial Basic Breakout – CH340G
1 x SparkFun Cerberus USB Cable
1 x USB 3.1 Cable A to C
DFRobot FireBeetle 2 ESP32-E
LED – 2
DSCK – 4
DMOSI – 16
DSS – 17
SCK – 22
MOSI – 23
MISO – 19
CS – 13
SCL – 21
SDA – 22
LED – 14
RHT – 25
PIR – 26
SWI – 3
MQ8 = A0
MQ9 = A1
MQ7 = A2
MQ3 = A3
VIN – +3.3V
GND – GND
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DL2405Mk03p.ino
/****** Don Luc Electronics © ****** Software Version Information Project #29 - DFRobot - RHT And MQ - Mk13 29-13 DL2404Mk03p.ino 1 x DFRobot FireBeetle 2 ESP32-E 1 x Adafruit SHARP Memory Display 1 x Adafruit MicroSD card breakout board+ 1 x MicroSD 16 GB 1 x Adafruit DS3231 Precision RTC FeatherWing - RTC 1 x Battery CR1220 4 x Pololu Carrier for MQ Gas Sensors 1 x SparkFun Hydrogen Gas Sensor - MQ-8 1 x 4.7K Ohm 1 x Pololu Carbon Monoxide & Flammable Gas Sensor - MQ-9 1 x 22k Ohm 1 x SparkFun Carbon Monoxide Gas Sensor - MQ-7 1 x 10K Ohm 1 x SparkFun Alcohol Gas Sensor - MQ-3 1 x 220k Ohm 1 x Temperature and Humidity Sensor - RHT03 1 x PIR Motion Sensor (JST) 1 x Switch 1 x 1K Ohm 1 x Gravity: Analog Soil Moisture Sensor 1 x Gravity: Analog Ambient Light Sensor 1 x Fermion: SHT40 Temperature & Humidity Sensor 3 x Fermion: BLE Sensor Beacon 3 x CR2032 Coin Cell Battery 1 x 1 x Lithium Ion Battery - 1000mAh 1 x Green LED 1 x SparkFun Serial Basic Breakout - CH340G 1 x SparkFun Cerberus USB Cable 1 x USB 3.1 Cable A to C */ // Include the Library Code // EEPROM Library to Read and Write EEPROM // with Unique ID for Unit #include "EEPROM.h" // Wire #include <Wire.h> // Arduino #include <Arduino.h> // BLE Device #include <BLEDevice.h> // BLE Utils #include <BLEUtils.h> // BLEScan #include <BLEScan.h> // BLE Advertised Device #include <BLEAdvertisedDevice.h> // BLE Eddystone URL #include <BLEEddystoneURL.h> // BLE Eddystone TLM #include <BLEEddystoneTLM.h> // BLE Beacon #include <BLEBeacon.h> // DS3231 RTC Date and Time #include <RTClib.h> // SD Card #include "FS.h" #include "SD.h" #include "SPI.h" // SHARP Memory Display #include <Adafruit_SharpMem.h> #include <Adafruit_GFX.h> // RHT Temperature and Humidity Sensor #include <SparkFun_RHT03.h> // ENDIAN_CHANGE #define ENDIAN_CHANGE_U16(x) ((((x)&0xFF00) >> 8) + (((x)&0xFF) << 8)) // DS3231 RTC Date and Time RTC_DS3231 rtc; String sDate; String sTime; // MicroSD Card const int chipSelect = 13; String zzzzzz = ""; // SHARP Memory Display #define SHARP_SCK 4 #define SHARP_MOSI 16 #define SHARP_SS 17 // Set the size of the display here, e.g. 144x168! Adafruit_SharpMem display(SHARP_SCK, SHARP_MOSI, SHARP_SS, 144, 168); // The currently-available SHARP Memory Display (144x168 pixels) // requires > 4K of microcontroller RAM; it WILL NOT WORK on Arduino Uno // or other <4K "classic" devices. #define BLACK 0 #define WHITE 1 // LED Green int iLEDGreen = 2; // Define LED int iLED = 14; // Fermion: SHT40 Temperature & Humidity Sensor // Temperature float TemperatureData; float Temperature; // Humidity float HumidityData; float Humidity; // Gravity: Analog Ambient Light Sensor float Sensor_Data; // SData => 1~6000 Lux float SData; // Gravity: Analog Soil Moisture Sensor float SensorSM; float SDataSM; // In seconds int scanTime = 5; // BLE Scan BLEScan *pBLEScan; // RHT Temperature and Humidity Sensor // RHT03 data pin Digital 25 const int RHT03_DATA_PIN = 25; // This creates a RTH03 object, which we'll use to interact with the sensor RHT03 rht; float latestHumidity; float latestTempC; // Gas Sensors MQ // Hydrogen Gas Sensor - MQ-8 int iMQ8 = A0; int iMQ8Raw = 0; int iMQ8ppm = 0; // Two points are taken from the curve in datasheet. // With these two points, a line is formed which is // "approximately equivalent" to the original curve. float H2Curve[3] = {2.3, 0.93,-1.44}; // Carbon Monoxide & Flammable Gas Sensor - MQ-9 int iMQ9 = A1; int iMQ9Raw = 0; int iMQ9ppm = 0; // Carbon Monoxide Gas Sensor - MQ-7 int iMQ7 = A2; int iMQ7Raw = 0; int iMQ7ppm = 0; // Alcohol Gas Sensor - MQ-3 int iMQ3 = A3; int iMQ3Raw = 0; int iMQ3ppm = 0; // PIR Motion // Motion detector const int iMotion = 26; // Proximity int proximity = LOW; String Det = ""; // Switch int iSwitch = 3; // Variable for reading the Switch status int iSwitchState = 0; // My Advertised Device Callbacks class MyAdvertisedDeviceCallbacks : public BLEAdvertisedDeviceCallbacks { // onResult void onResult(BLEAdvertisedDevice advertisedDevice) { // Advertised Device if (advertisedDevice.haveName()) { // Name: Fermion: Sensor Beacon if(String(advertisedDevice.getName().c_str()) == "SHT40"){ // strManufacturerData std::string strManufacturerData = advertisedDevice.getManufacturerData(); uint8_t cManufacturerData[100]; strManufacturerData.copy((char *)cManufacturerData, strManufacturerData.length(), 0); // strManufacturerData.length for (int i = 0; i < strManufacturerData.length(); i++) { // cManufacturerData[i] cManufacturerData[i]; } // TemperatureData TemperatureData = int(cManufacturerData[2]<<8 | cManufacturerData[3]); // HumidityData HumidityData = int(cManufacturerData[5]<<8 | cManufacturerData[6]); } // Name: Fermion: Sensor Beacon if(String(advertisedDevice.getName().c_str()) == "Fermion: Sensor Beacon"){ // strManufacturerData std::string strManufacturerData = advertisedDevice.getManufacturerData(); uint8_t cManufacturerData[100]; strManufacturerData.copy((char *)cManufacturerData, strManufacturerData.length(), 0); // strManufacturerData.length for (int i = 0; i < strManufacturerData.length(); i++) { // cManufacturerData[i] cManufacturerData[i]; } // Sensor_Data Sensor_Data = int(cManufacturerData[2]<<8 | cManufacturerData[3]); } // Name: Fermion: Sensor Beacon if(String(advertisedDevice.getName().c_str()) == "Soil Moisture"){ // strManufacturerData std::string strManufacturerData = advertisedDevice.getManufacturerData(); uint8_t cManufacturerData[100]; strManufacturerData.copy((char *)cManufacturerData, strManufacturerData.length(), 0); // strManufacturerData.length for (int i = 0; i < strManufacturerData.length(); i++) { // cManufacturerData[i] cManufacturerData[i]; } // SensorSM SensorSM = int(cManufacturerData[2]<<8 | cManufacturerData[3]); } } } }; // EEPROM Unique ID Information #define EEPROM_SIZE 64 String uid = ""; // Software Version Information String sver = "29-13"; void loop() { // DS3231 RTC Date and Time isRTC(); // RHT Temperature and Humidity Sensor isRHT03(); // Gas Sensors MQ isGasSensor(); // isPIR Motion isPIR(); // ScanResults isBLEScanResults(); // Fermion: SHT40 Temperature & Humidity Sensor isSHT40(); // Gravity: Analog Ambient Light Sensor isAmbientLight(); // Soil Moisture isSoilMoisture(); // Delay 4 Second delay(4000); // Read the state of the Switch value iSwitchState = digitalRead(iSwitch); // The Switch is HIGH: if (iSwitchState == HIGH) { // Display Date, Time, Temperature, Humidity isDisplayDTTH(); } else { // Display Temperature, Humidity, MQ, PIR isDisplayDTMQPIR(); } // MicroSD Card isSD(); // iLED HIGH digitalWrite(iLED, HIGH ); // Delay 1 Second delay(1000); }
getAmbientLight.ino
// Gravity: Analog Ambient Light Sensor // Ambient Light void isAmbientLight(){ // Analog Ambient Light Sensor // SData => 1~6000 Lux SData = map(Sensor_Data, 1, 3000, 1, 6000); }
getBLEScan.ino
// getBLEScan // Setup BLE Scan void isSetupBLEScan(){ // BLE Device BLEDevice::init(""); // Create new scan pBLEScan = BLEDevice::getScan(); // Set Advertised Device Callbacks pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks()); // Active scan uses more power, but get results faster pBLEScan->setActiveScan(true); // Set Interval pBLEScan->setInterval(100); // Less or equal setInterval value pBLEScan->setWindow(99); } // BLE Scan Results void isBLEScanResults(){ // Put your main code here, to run repeatedly: BLEScanResults foundDevices = pBLEScan->start(scanTime, false); // Delete results fromBLEScan buffer to release memory pBLEScan->clearResults(); }
getDisplay.ino
// SHARP Memory Display // SHARP Memory Display - UID void isDisplayUID() { // Text Display // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(3); display.setTextColor(BLACK); // Don Luc Electronics display.setCursor(0,10); display.println( "Don Luc" ); display.setTextSize(2); display.setCursor(0,40); display.println( "Electronics" ); // Version //display.setTextSize(3); display.setCursor(0,70); display.println( "Version" ); //display.setTextSize(2); display.setCursor(0,95); display.println( sver ); // EEPROM display.setCursor(0,120); display.println( "EEPROM" ); display.setCursor(0,140); display.println( uid ); // Refresh display.refresh(); delay( 100 ); } // Display Date, Time, Temperature, Humidity, Ambient Light, Soil Moisture void isDisplayDTTH() { // Text Display Date // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // Date display.setCursor(0,5); display.println( sDate ); // Time display.setCursor(0,30); display.println( sTime ); // Temperature display.setCursor(0,55); display.print( Temperature ); display.println( "C" ); // Humidity display.setCursor(0,80); display.print( Humidity ); display.println( "%" ); // Lux display.setCursor(0,105); display.println( SData ); // Soil Moisture display.setCursor(0,130); display.println( SDataSM ); // Refresh display.refresh(); delay( 100 ); } // Display Temperature, Humidity, MQ, PIR void isDisplayDTMQPIR() { // Text Display Date // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // Temperature display.setCursor(0,5); display.print( latestTempC ); display.println( "C" ); // Humidity display.setCursor(0,30); display.print( latestHumidity ); display.println( "%" ); // MQ-8 display.setCursor(0,55); display.print( "MQ-8: " ); display.print( iMQ8ppm ); display.println( " PPM" ); // MQ-9 display.setCursor(0,80); display.print( "MQ-9: " ); display.print( iMQ9ppm ); display.println( " PPM" ); // MQ-7 display.setCursor(0,105); display.print( "MQ-7: " ); display.print( iMQ7ppm ); display.println( " PPM" ); // MQ-3 display.setCursor(0,130); display.print( "MQ-3: " ); display.print( iMQ3ppm ); display.println( "%" ); // PIR display.setCursor(0,145); display.println( Det ); // Refresh display.refresh(); delay( 100 ); }
getEEPROM.ino
// EEPROM // isUID EEPROM Unique ID void isUID() { // Is Unit ID uid = ""; for (int x = 0; x < 7; x++) { uid = uid + char(EEPROM.read(x)); } }
getGasSensorMQ.ino
// Gas Sensors MQ // Gas Sensor void isGasSensor() { // Read in analog value from each gas sensors // Hydrogen Gas Sensor - MQ-8 iMQ8Raw = analogRead( iMQ8 ); // Carbon Monoxide & Flammable Gas Sensor - MQ-9 iMQ9Raw = analogRead( iMQ9 ); // Carbon Monoxide Gas Sensor - MQ-7 iMQ7Raw = analogRead( iMQ7 ); // Alcohol Gas Sensor - MQ-3 iMQ3Raw = analogRead( iMQ3 ); // Caclulate the PPM of each gas sensors // Hydrogen Gas Sensor - MQ-8 iMQ8ppm = isMQ8( iMQ8Raw ); // Carbon Monoxide & Flammable Gas Sensor - MQ-9 iMQ9ppm = isMQ9( iMQ9Raw ); // Carbon Monoxide Gas Sensor - MQ-7 iMQ7ppm = isMQ7( iMQ7Raw ); // Alcohol Gas Sensor - MQ-3 iMQ3ppm = isMQ3( iMQ3Raw ); } // Hydrogen Gas Sensor - MQ-8 - PPM int isMQ8(double rawValue) { // RvRo double RvRo = rawValue * (3.3 / 4095); double ppm = 3.027*exp(1.0698*( RvRo )); return ppm; //return (pow(4.7,( ((log(RvRo)-H2Curve[1])/H2Curve[2]) + H2Curve[0]))); } // Carbon Monoxide & Flammable Gas Sensor - MQ-9 int isMQ9(double rawValue) { double RvRo = rawValue * 3.3 / 4095; double ppm = 3.027*exp(1.0698*( RvRo )); return ppm; } // Carbon Monoxide Gas Sensor - MQ-7 int isMQ7(double rawValue) { double RvRo = rawValue * 3.3 / 4095; double ppm = 3.027*exp(1.0698*( RvRo )); return ppm; } // Alcohol Gas Sensor - MQ-3 int isMQ3(double rawValue) { double RvRo = rawValue * 3.3 / 4095; double bac = RvRo * 0.21; return bac; }
getPIR.ino
// PIR Motion // Setup PIR void isSetupPIR() { // Setup PIR Montion pinMode(iMotion, INPUT_PULLUP); } // isPIR Motion void isPIR() { // Proximity proximity = digitalRead(iMotion); if (proximity == LOW) { // PIR Motion Sensor's LOW, Motion is detected Det = "Motion Yes"; } else { // PIR Motion Sensor's HIGH Det = "No"; } }
getRHT.ino
// RHT Temperature and Humidity Sensor // Setup RHT Temperature and Humidity Sensor void isSetupRTH03() { // RHT Temperature and Humidity Sensor // Call rht.begin() to initialize the sensor and our data pin rht.begin(RHT03_DATA_PIN); } // RHT Temperature and Humidity Sensor void isRHT03(){ // Call rht.update() to get new humidity and temperature values from the sensor. int updateRet = rht.update(); // The humidity(), tempC(), and tempF() functions can be called -- after // a successful update() -- to get the last humidity and temperature value latestHumidity = rht.humidity(); latestTempC = rht.tempC(); }
getRTC.ino
// DS3231 RTC Date and Time // Setup DS3231 RTC void isSetupRTC() { if (! rtc.begin()) { while (1); } if (rtc.lostPower()) { // Following line sets the RTC to the date & time this sketch was compiled rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // This line sets the RTC with an explicit date & time, for example to set // January 21, 2014 at 3am you would call: // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0)); } } // DS3231 RTC Date and Time void isRTC(){ // Date and Time sDate = ""; sTime = ""; // Date Time DateTime now = rtc.now(); // sData sDate += String(now.year(), DEC); sDate += "/"; sDate += String(now.month(), DEC); sDate += "/"; sDate += String(now.day(), DEC); // sTime sTime += String(now.hour(), DEC); sTime += ":"; sTime += String(now.minute(), DEC); sTime += ":"; sTime += String(now.second(), DEC); }
getSD.ino
// MicroSD Card // MicroSD Setup void setupSD() { // MicroSD Card pinMode( chipSelect , OUTPUT ); if(!SD.begin( chipSelect )){ ; return; } uint8_t cardType = SD.cardType(); // CARD NONE if(cardType == CARD_NONE){ ; return; } // SD Card Type if(cardType == CARD_MMC){ ; } else if(cardType == CARD_SD){ ; } else if(cardType == CARD_SDHC){ ; } else { ; } // Size uint64_t cardSize = SD.cardSize() / (1024 * 1024); } // MicroSD Card void isSD() { zzzzzz = ""; // DFR|EEPROM Unique ID|Version|Date|Time|Temperature|Humidity|Lux| // Soil Moisture|Temperature|Humidity|MQ8|MQ9|MQ7|MQ3|PIR|*\r zzzzzz = "DFR|" + uid + "|" + sver + "|" + sDate + "|" + sTime + "|" + String(Temperature) + "C|" + String(Humidity) + "%|" + String(SData) + "|" + String(SDataSM) + "|" + String(latestTempC) + "C|" + String(latestHumidity) + "%|" + String(iMQ8ppm) + " PPM|" + String(iMQ9ppm) + " PPM|" + String(iMQ7ppm) + " PPM|" + String(iMQ3ppm) + "%|" + String(Det) + "|*\r"; // msg + 1 char msg[zzzzzz.length() + 1]; zzzzzz.toCharArray(msg, zzzzzz.length() + 1); // Append File appendFile(SD, "/dfrdata.txt", msg ); } // List Dir void listDir(fs::FS &fs, const char * dirname, uint8_t levels){ // List Dir dirname; File root = fs.open(dirname); if(!root){ return; } if(!root.isDirectory()){ return; } File file = root.openNextFile(); while(file){ if(file.isDirectory()){ file.name(); if(levels){ listDir(fs, file.name(), levels -1); } } else { file.name(); file.size(); } file = root.openNextFile(); } } // Write File void writeFile(fs::FS &fs, const char * path, const char * message){ // Write File path; File file = fs.open(path, FILE_WRITE); if(!file){ return; } if(file.print(message)){ ; } else { ; } file.close(); } // Append File void appendFile(fs::FS &fs, const char * path, const char * message){ // Append File path; File file = fs.open(path, FILE_APPEND); if(!file){ return; } if(file.print(message)){ ; } else { ; } file.close(); }
getSHT40.ino
// Fermion: SHT40 Temperature & Humidity Sensor // SHT40 Temperature & Humidity void isSHT40(){ // Fermion: SHT40 Temperature & Humidity Sensor // Temperature Temperature = (175 * TemperatureData/65535) - 45; // Humidity Humidity = (125 * HumidityData/65535) - 6; }
getSoilMoisture.ino
// Gravity: Analog Soil Moisture Sensor // Soil Moisture void isSoilMoisture(){ // SDataSM => 0~900 Soil Moisture SDataSM = map( SensorSM, 1, 3000, 0, 900); }
setup.ino
// Setup void setup() { // Give display time to power on delay(100); // EEPROM Size EEPROM.begin(EEPROM_SIZE); // EEPROM Unique ID isUID(); // Give display delay(100); // Set up I2C bus Wire.begin(); // Give display delay(100); // Setup BLE Scan isSetupBLEScan(); // Setup DS3231 RTC isSetupRTC(); //MicroSD Card setupSD(); // RHT Temperature and Humidity Sensor // Setup RTH03 Temperature and Humidity Sensor isSetupRTH03(); // PIR Motion // Setup PIR isSetupPIR(); // SHARP Display Start & Clear the Display display.begin(); // Clear Display display.clearDisplay(); // Initialize digital pin iLED as an output pinMode(iLED, OUTPUT); // Outputting high, the LED turns on digitalWrite(iLED, HIGH); // Initialize the LED Green pinMode(iLEDGreen, OUTPUT); // iLEDGreen HIGH digitalWrite(iLEDGreen, HIGH ); // Initialize the Switch pinMode(iSwitch, INPUT); // Don Luc Electronics // Version // EEPROM isDisplayUID(); // Delay 5 Second delay( 5000 ); }
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