Project #15: Environment – SparkFun Alcohol Gas Sensor – MQ-3 – Mk09
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#DonLuc #Environment #Microcontrollers #ESP32 #MQ #GPS #SparkFun #Adafruit #Pololu #Fritzing #Programming #Arduino #Electronics #Consultant #Vlog #Aphasia
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DL2005Mk010
1 x SparkFun Thing Plus – ESP32 WROOM
1 x Adafruit SHARP Memory Display
1 x SparkFun Environmental Combo Breakout – CCS811/BME280
1 x Adafruit Adalogger FeatherWing – RTC + SD
1 x SparkFun GPS Receiver – GP-20U7
1 x CR1220 12mm Lithium Battery
1 x 32Gb microSD Card
1 x Mountable Slide Switch
1 x SparkFun Rotary Switch – 10 Position
1 x Black Knob
1 x Breadboard Solderable
4 x Pololu Carrier for MQ Gas Sensors
1 x SparkFun Hydrogen Gas Sensor – MQ-8
1 x Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9
1 x SparkFun Carbon Monoxide Gas Sensor – MQ-7
1 x SparkFun Alcohol Gas Sensor – MQ-3
1 x Qwiic Cable – 100mm
1 x LED Green
11 x 1K Ohm
1 x 4.7K Ohm
2 x 10K Ohm
1 x 20k Ohm
1 x 220k Ohm
10 x Jumper Wires 3in M/M
10 x Jumper Wires 6in M/M
16 x Wire Solid Core – 22 AWG
2 x Full-Size Breadboard
1 x SparkFun Cerberus USB Cable
1 x DC Power Supply
SparkFun Thing Plus – ESP32 WROOM
LEG – Digital 21
SCK – Digital 13
MOS – Digital 12
SSD – Digital 27
SDA – Digital 23
SCL – Digital 22
SD1 – Digital 33
SC2 – Digital 5
MO2 – Digital 18
MI2 – Digital 19
SS1 – Digital 16
ROT – Analog A1
MH1 – Analog A0
MC1 – Analog A2
MC2 – Analog A3
MA1 – Analog A4
GPS – Digital 14
VIN – +3.3V
GND – GND
DL2005Mk10p.ino
// ***** Don Luc Electronics © ***** // Software Version Information // Project #15: Environment - SparkFun Alcohol Gas Sensor - MQ-3 - Mk09 // 05-09 // DL2005Mk10p.ino 15-09 // EEPROM with Unique ID // 1 x SparkFun Thing Plus - ESP32 WROOM // 1 x Adafruit SHARP Memory Display // 1 x SparkFun Environmental Combo Breakout - CCS811/BME280 // 1 x Adafruit Adalogger FeatherWing - RTC + SD // 1 x SparkFun GPS Receiver - GP-20U7 // 1 x CR1220 12mm Lithium Battery // 1 x 32Gb microSD Card // 1 x Mountable Slide Switch // 1 x SparkFun Rotary Switch - 10 Position // 1 x Black Knob // 1 x Breadboard Solderable // 4 x Pololu Carrier for MQ Gas Sensors // 1 x Pololu Carbon Monoxide & Flammable Gas Sensor - MQ-9 // 1 x SparkFun Hydrogen Gas Sensor - MQ-8 // 1 x SparkFun Carbon Monoxide Gas Sensor - MQ-7 // 1 x SparkFun Alcohol Gas Sensor - MQ-3 // 1 x Qwiic Cable - 100mm // 1 x LED Green // 11 x 1K Ohm // 1 x 4.7K Ohm // 1 x 10K Ohm // 1 x 20K Ohm // 1 x 220k Ohm // 10 x Jumper Wires 3in M/M // 10 x Jumper Wires 6in M/M // 16 x Wire Solid Core - 22 AWG // 2 x Full-Size Breadboard // 1 x SparkFun Cerberus USB Cable // 1 x DC Power Supply // Include the Library Code // EEPROM Library to Read and Write EEPROM with Unique ID for Unit #include "EEPROM.h" // Wire #include <Wire.h> // SHARP Memory Display #include <Adafruit_SharpMem.h> #include <Adafruit_GFX.h> // SparkFun CCS811 - eCO2 & tVOC #include <SparkFunCCS811.h> // SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure #include <SparkFunBME280.h> // Date and Time #include "RTClib.h" // SD Card #include "FS.h" #include "SD.h" #include "SPI.h" // GPS Receiver #include <TinyGPS++.h> // Hardware Serial #include <HardwareSerial.h> // LED Green int iLEDGreen = 21; // SHARP Memory Display // any pins can be used #define SHARP_SCK 13 #define SHARP_MOSI 12 #define SHARP_SS 27 // Set the size of the display here - 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 // 1/2 of lesser of display width or height int minorHalfSize; // SparkFun CCS811 - eCO2 & tVOC // Default I2C Address #define CCS811_ADDR 0x5B CCS811 myCCS811(CCS811_ADDR); float CCS811CO2 = 0; float CCS811TVOC = 0; // SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure BME280 myBME280; float BMEtempC = 0; float BMEhumid = 0; float BMEaltitudeM = 0; float BMEpressure = 0; // Date and Time // PCF8523 Precision RTC RTC_PCF8523 rtc; String dateRTC = ""; String timeRTC = ""; // microSD Card const int chipSelect = 33; String zzzzzz = ""; // Mountable Slide Switch int iSS1 = 16; // State int iSS1State = 0; // ESP32 HardwareSerial HardwareSerial tGPS(2); // GPS Receiver #define gpsRXPIN 14 // This one is unused and doesnt have a conection #define gpsTXPIN 32 // The TinyGPS++ object TinyGPSPlus gps; float TargetLat; float TargetLon; int GPSStatus = 0; // Rotary Switch - 10 Position // Number 1 => 10 int iRotNum = A0; // iRotVal - Value int iRotVal = 0; // Number int z = 0; int x = 0; // Gas Sensors MQ // Hydrogen Gas Sensor - MQ-8 int iMQ8 = A1; 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 = A2; int iMQ9Raw = 0; int iMQ9ppm = 0; // Carbon Monoxide Gas Sensor - MQ-7 int iMQ7 = A3; int iMQ7Raw = 0; int iMQ7ppm = 0; // Alcohol Gas Sensor - MQ-3 int iMQ3 = A4; int iMQ3Raw = 0; int iMQ3ppm = 0; // Software Version Information String sver = "15-09"; // EEPROM Unique ID Information #define EEPROM_SIZE 64 String uid = ""; void loop() { // Receives NEMA data from GPS receiver isGPS(); // Date and Time isRTC(); // SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure isBME280(); // SparkFun CCS811 - eCO2 & tVOC isCCS811(); // Gas Sensors MQ isGasSensor(); // Rotary Switch isRot(); // Slide Switch // Read the state of the iSS1 value iSS1State = digitalRead(iSS1); // If it is the Slide Switch State is HIGH if (iSS1State == HIGH) { // iLEDGreen digitalWrite(iLEDGreen, HIGH ); // microSD Card isSD(); } else { // iLEDGreen digitalWrite(iLEDGreen, LOW ); } delay( 1000 ); }
getBME280.ino
// SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure // isBME280 - Humidity, Temperature, Altitude and Barometric Pressure void isBME280(){ // Temperature Celsius BMEtempC = myBME280.readTempC(); // Humidity BMEhumid = myBME280.readFloatHumidity(); // Altitude Meters BMEaltitudeM = (myBME280.readFloatAltitudeMeters(), 2); // Barometric Pressure BMEpressure = myBME280.readFloatPressure(); }
getCCS811.ino
// CCS811 - eCO2 & tVOC // isCCS811 - eCO2 & tVOC void isCCS811(){ // This sends the temperature & humidity data to the CCS811 myCCS811.setEnvironmentalData(BMEhumid, BMEtempC); // Calling this function updates the global tVOC and eCO2 variables myCCS811.readAlgorithmResults(); // eCO2 Concentration CCS811CO2 = myCCS811.getCO2(); // tVOC Concentration CCS811TVOC = myCCS811.getTVOC(); }
getDisplay.ino
// 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(0,100); display.println( sver ); // EEPROM Unique ID display.setTextSize(1); display.setCursor(0,130); display.println( "EEPROM Unique ID" ); display.setTextSize(2); display.setCursor(0,145); display.println( uid ); // Refresh display.refresh(); delay( 100 ); } // Display Environmental void isDisplayEnvironmental(){ // Text Display Environmental // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(1); display.setTextColor(BLACK); // Temperature Celsius display.setCursor(0,0); display.println( "Temperature Celsius" ); display.setCursor(0,10); display.print( BMEtempC ); display.println( " C" ); // Humidity display.setCursor(0,20); display.println( "Humidity" ); display.setCursor(0,30); display.print( BMEhumid ); display.println( "%" ); // Altitude Meters display.setCursor(0,40); display.println( "Altitude Meters" ); display.setCursor(0,50); display.print( BMEaltitudeM ); display.println( " m" ); // Pressure display.setCursor(0,60); display.println( "Barometric Pressure" ); display.setCursor(0,70); display.print( BMEpressure ); display.println( " Pa" ); // eCO2 Concentration display.setCursor(0,80); display.println( "eCO2 Concentration" ); display.setCursor(0,90); display.print( CCS811CO2 ); display.println( " ppm" ); // tVOC Concentration display.setCursor(0,100); display.println( "tVOC Concentration" ); display.setCursor(0,110); display.print( CCS811TVOC ); display.println( " ppb" ); // Date display.setCursor(0,120); display.println( dateRTC ); // Time display.setCursor(0,130); display.println( timeRTC ); // GPS Status display.setCursor(0,140); display.println( GPSStatus ); // Target Latitude display.setCursor(0,150); display.println( TargetLat ); // Target Longitude display.setCursor(0,160); display.println( TargetLon ); // Refresh display.refresh(); delay( 100 ); } // Display Date void isDisplayDate() { // Text Display Date // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // Date display.setCursor(0,5); display.println( dateRTC ); // Time display.setCursor(0,30); display.println( timeRTC ); // GPS Status display.setCursor(0,60); display.print( "GPS: " ); display.println( GPSStatus ); // Target Latitude display.setCursor(0,80); display.println( "Latitude" ); display.setCursor(0,100); display.println( TargetLat ); // Target Longitude display.setCursor(0,120); display.println( "Longitude" ); display.setCursor(0,140); display.println( TargetLon ); // Refresh display.refresh(); delay( 100 ); } // Display BME280 void isDisplayBME280() { // Text Display BME280 // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // Temperature Celsius display.setCursor(0,10); display.println( "Temperature" ); display.setCursor(0,30); display.print( BMEtempC ); display.println( " C" ); // Humidity display.setCursor(0,50); display.println( "Humidity" ); display.setCursor(0,70); display.print( BMEhumid ); display.println( "%" ); // Altitude Meters display.setCursor(0,90); display.println( "Altitude M" ); display.setCursor(0,110); display.print( BMEaltitudeM ); display.println( " m" ); // Pressure display.setCursor(0,130); display.println( "Barometric" ); display.setCursor(0,150); display.print( BMEpressure ); display.println( "Pa" ); // Refresh display.refresh(); delay( 100 ); } // Display CCS811 - eCO2 & tVOC void isDisplayCCS811() { // Text Display CCS811 // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // eCO2 Concentration display.setCursor(0,10); display.println( "eCO2" ); display.setCursor(0,30); display.print( CCS811CO2 ); display.println( " ppm" ); // tVOC Concentration display.setCursor(0,60); display.println( "tVOC" ); display.setCursor(0,80); display.print( CCS811TVOC ); display.println( " ppb" ); // Refresh display.refresh(); delay( 100 ); } // Display Gas Sensors MQ void isDisplayMQ() { // Text Display MQ // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(2); display.setTextColor(BLACK); // Gas Sensors MQ display.setCursor(0,10); display.println( "Gas H2 MQ8" ); display.setCursor(0,30); display.print( iMQ8ppm ); display.println( " ppm" ); display.setCursor(0,50); display.println( "Gas CO MQ9" ); display.setCursor(0,70); display.print( iMQ9ppm ); display.println( " ppm" ); display.setCursor(0,90); display.println( "Gas CO MQ7" ); display.setCursor(0,110); display.print( iMQ7ppm ); display.println( " ppm" ); display.setCursor(0,130); display.println( "BAC MQ3" ); display.setCursor(0,150); display.print( iMQ3ppm ); display.println( "%" ); // Refresh display.refresh(); delay( 100 ); } // Display Z void isDisplayZ() { // Text Display Z // Clear Display display.clearDisplay(); display.setRotation(4); display.setTextSize(3); display.setTextColor(BLACK); // Z display.setCursor(0,10); display.print( "Z: " ); display.println( z ); // Refresh display.refresh(); delay( 100 ); }
getEEPROM.ino
// EEPROM // isUID EEPROM Unique ID void isUID() { // Is Unit ID uid = ""; for (int x = 0; x < 5; x++) { uid = uid + char(EEPROM.read(x)); } }
getGPS.ino
// GPS Receiver // Setup GPS void setupGPS() { // Setup GPS tGPS.begin( 9600 , SERIAL_8N1, gpsRXPIN, gpsTXPIN ); } // isGPS void isGPS(){ // Receives NEMA data from GPS receiver // This sketch displays information every time a new sentence is correctly encoded. while ( tGPS.available() > 0) if (gps.encode( tGPS.read() )) { displayInfo(); } if (millis() > 5000 && gps.charsProcessed() < 10) { while(true); } } // GPS Vector Pointer Target void displayInfo(){ // Location if (gps.location.isValid()) { TargetLat = gps.location.lat(); TargetLon = gps.location.lng(); GPSStatus = 2; } else { GPSStatus = 0; } }
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 / 1023); 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; }
getRTC.ino
// Date & Time // PCF8523 Precision RTC void setupRTC() { // Date & Time // pcf8523 Precision RTC if (! rtc.begin()) { while (1); } if (! rtc.initialized()) { // 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(2018, 9, 29, 12, 17, 0)); } } // Date and Time RTC void isRTC () { // Date and Time dateRTC = ""; timeRTC = ""; DateTime now = rtc.now(); // Date dateRTC = now.year(), DEC; dateRTC = dateRTC + "/"; dateRTC = dateRTC + now.month(), DEC; dateRTC = dateRTC + "/"; dateRTC = dateRTC + now.day(), DEC; // Time timeRTC = now.hour(), DEC; timeRTC = timeRTC + ":"; timeRTC = timeRTC + now.minute(), DEC; timeRTC = timeRTC + ":"; timeRTC = timeRTC + now.second(), DEC; }
getRot.ino
// Rotary Switch // isRot - iRotVal - Value void isRot() { // Rotary Switch z = analogRead( iRotNum ); x = map(z, 0, 4095, 0, 9); iRotVal = map(z, 0, 4095, 0, 10); // Range Value switch ( iRotVal ) { case 0: // Display Environmental isDisplayEnvironmental(); break; case 1: // Display Date isDisplayDate(); break; case 2: // Display BME280 isDisplayBME280(); break; case 3: // Display CCS811 - eCO2 & tVOC isDisplayCCS811(); break; case 4: // Display Gas Sensors MQ isDisplayMQ(); break; case 5: // Display UID isDisplayUID(); break; case 6: // Z isDisplayZ(); break; case 7: // Z isDisplayZ(); break; case 8: // Z isDisplayZ(); break; case 9: // Z isDisplayZ(); break; } }
getSD.ino
// microSD Card // microSD Setup void setupSD() { // microSD Card pinMode( chipSelect , OUTPUT ); if(!SD.begin( chipSelect )){ ; return; } uint8_t cardType = SD.cardType(); if(cardType == CARD_NONE){ ; return; } //Serial.print("SD Card Type: "); if(cardType == CARD_MMC){ ; } else if(cardType == CARD_SD){ ; } else if(cardType == CARD_SDHC){ ; } else { ; } uint64_t cardSize = SD.cardSize() / (1024 * 1024); } // microSD Card void isSD() { zzzzzz = ""; // EEPROM Unique ID|Version|Date|Time|GPS Status|Target Latitude|Target Longitude|Temperature Celsius|Humidity|Altitude Meters|Barometric Pressure|eCO2 Concentration|tVOC Concentration|H2 Gas Sensor MQ-8|CO Gas Sensor MQ-9|CO Gas Sensor MQ-7|Alcohol Gas Sensor MQ-3 zzzzzz = uid + "|" + sver + "|" + dateRTC + "|" + timeRTC + "|" + GPSStatus + "|" + TargetLat + "|" + TargetLon + "|" + BMEtempC + "|" + BMEhumid + "|" + BMEaltitudeM + "|" + BMEpressure + "|" + CCS811CO2 + "|" + CCS811TVOC + "|" + iMQ8ppm + "|" + iMQ9ppm + "|" + iMQ7ppm + "|" + iMQ9ppm + "|" + iMQ3ppm + "|\r"; char msg[zzzzzz.length() + 1]; zzzzzz.toCharArray(msg, zzzzzz.length() + 1); appendFile(SD, "/espdata.txt", msg ); } // List Dir void listDir(fs::FS &fs, const char * dirname, uint8_t levels){ 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){ 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){ path; File file = fs.open(path, FILE_APPEND); if(!file){ return; } if(file.print(message)){ ; } else { ; } file.close(); }
setup.ino
// Setup void setup() { // EEPROM Size EEPROM.begin(EEPROM_SIZE); // EEPROM Unique ID isUID(); // GPS Receiver // Setup GPS setupGPS(); // SHARP Display Start & Clear the Display display.begin(); // Clear Display display.clearDisplay(); // Display UID isDisplayUID(); // Wire - Inialize I2C Hardware Wire.begin(); // SparkFun BME280 - Humidity, Temperature, Altitude and Barometric Pressure myBME280.begin(); // CCS811 - eCO2 & tVOC myCCS811.begin(); // Initialize the LED Green pinMode(iLEDGreen, OUTPUT); // Date & Time RTC // PCF8523 Precision RTC setupRTC(); // Date & Time isRTC(); // microSD Card setupSD(); // Slide Switch pinMode(iSS1, INPUT); delay( 5000 ); }
Technology Experience
- Research & Development (R & D)
- Desktop Applications (Windows, OSX, Linux, Multi-OS, Multi-Tier, etc…)
- Mobile Applications (Android, iOS, Blackberry, Windows Mobile, Windows CE, etc…)
- Web Applications (LAMP, Scripting, Java, ASP, ASP.NET, RoR, Wakanda, etc…)
- Social Media Programming & Integration (Facebook, Twitter, YouTube, Pinterest, etc…)
- Content Management Systems (WordPress, Drupal, Joomla, Moodle, etc…)
- Bulletin Boards (phpBB, SMF, Vanilla, jobberBase, etc…)
- eCommerce (WooCommerce, OSCommerce, ZenCart, PayPal Shopping Cart, etc…)
Instructor
- DOS, Windows, OSX, Linux, iOS, Android, Multi-OS
- Linux-Apache-PHP-MySQL
- Robotics
- Arduino
- Raspberry Pi
- Espressif
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