Project #14: Components – SparkFun Carbon Monoxide Gas Sensor – MQ-7 – Mk17

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#DonLuc #Electronics #Components #MQ-7 #Microcontrollers #Environment #SparkFun #Pololu #Consultant #Vlog #Aphasia

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Components

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Components

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SparkFun Carbon Monoxide Gas Sensor – MQ-7

SparkFun Item: SEN-09403

This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 10 to 500ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

1 x SparkFun Carbon Monoxide Gas Sensor – MQ-7
1 x Pololu Carrier for MQ Gas Sensors
3 x Break Away Headers – Straight
1 x 10k Ohm

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Instructor

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  • Linux-Apache-PHP-MySQL
  • Robotics
  • Arduino
  • Raspberry Pi
  • Espressif

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Aphasia

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J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

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Don Luc

Project #15: Environment – Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9 – Mk07

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#DonLuc #Environment #Microcontrollers #ESP32 #MQ-X #GPS #SparkFun #Adafruit #Pololu #Fritzing #Programming #Arduino #Electronics #Consultant #Vlog #Aphasia

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Environment

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Environment

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Environment

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Environment

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DL2005Mk06

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
2 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 Qwiic Cable – 100mm
1 x LED Green
11 x 1K Ohm
1 x 4.7K Ohm
1 x 10K Ohm
1 x 20k Ohm
6 x Jumper Wires 3in M/M
8 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 A0
MH1 – Analog A1
MC1 – Analog A2
GPS – Digital 14
VIN – +3.3V
GND – GND

DL2005Mk06p.ino

// ***** Don Luc Electronics © *****
// Software Version Information
// Project #15: Environment - Pololu Carbon Monoxide & Flammable Gas Sensor - MQ-9 - Mk07
// 05-06
// DL2005Mk06p.ino 15-07
// 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
// 2 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 Qwiic Cable - 100mm
// 1 x LED Green
// 11 x 1K Ohm
// 1 x 4.7K Ohm
// 1 x 10K Ohm
// 1 x 20K Ohm
// 6 x Jumper Wires 3in M/M
// 8 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;

// Software Version Information
String sver = "15-07";
// 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 Sensors" );
    display.setCursor(0,30);
    display.println( "Gas H2 MQ8" );
    display.setCursor(0,50);
    display.print( iMQ8ppm );
    display.println( " ppm" );
    display.setCursor(0,70);
    display.println( "Gas CO MQ9" );
    display.setCursor(0,90);
    display.print( iMQ9ppm );
    display.println( " ppm" );    
    // 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 );
  
  // Caclulate the PPM of each gas sensors

  // Hydrogen Gas Sensor - MQ-8
  isMQ8(); 

  // Carbon Monoxide & Flammable Gas Sensor - MQ-9
  isMQ9();
  
}
// Hydrogen Gas Sensor - MQ-8 - PPM
void isMQ8() {

  // RvRo
  double RvRo = iMQ8Raw * (3.3 / 1023);

  iMQ8ppm = (pow(4.7,( ((log(RvRo)-H2Curve[1])/H2Curve[2]) + H2Curve[0])));
  
}
// Carbon Monoxide & Flammable Gas Sensor - MQ-9
void isMQ9() {

  double RvRo = iMQ9Raw * (3.3 / 4095);

  iMQ9ppm = 3.027*exp(1.0698*( RvRo ));
  
}

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;
    default:

      // 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
  zzzzzz = uid + "|" + sver + "|" + dateRTC + "|" + timeRTC + "|" + GPSStatus + "|" + TargetLat + "|" + TargetLon + "|" + BMEtempC + "|" + BMEhumid + "|" + BMEaltitudeM + "|" + BMEpressure + "|" + CCS811CO2 + "|" + CCS811TVOC + "|" + iMQ8ppm + + "|" + iMQ9ppm + "|\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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9 – Mk16

——

#DonLuc #Electronics #Components #MQ-9 #Microcontrollers #Environment #Pololu #Consultant #Vlog #Aphasia

——

Components

——

Components

——

Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9

Pololu Item: 1483

This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 1,000 ppm and combustible gas from 100 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. This Carbon Monoxide (CO) and flammable gas sensor detects the concentrations of CO and combustible gas in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of CO from 10 to 1,000 ppm and flammable gas, high sensitivity to Methane, Propane and CO, from 100 to 10,000 ppm. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V.

1 x Pololu Carbon Monoxide & Flammable Gas Sensor – MQ-9
1 x Pololu Carrier for MQ Gas Sensors
3 x Break Away Headers – Straight
1 x 20k Ohm

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #15: Environment – SparkFun Hydrogen Gas Sensor – MQ-8 – Mk06

——

#DonLuc #Environment #Microcontrollers #ESP32 #MQ-8 #GPS #SparkFun #Adafruit #Pololu #Fritzing #Programming #Arduino #Electronics #Consultant #Vlog #Aphasia

——

Environment

——

Environment

——

Environment

——

DL2005Mk04

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
1 x Pololu Adjustable Boost Regulator 2.5-9.5V
1 x Pololu Carrier for MQ Gas Sensors
1 x SparkFun Hydrogen Gas Sensor – MQ-8
1 x Qwiic Cable – 100mm
1 x LED Green
11 x 1K Ohm
1 x 4.7K Ohm
1 x 10K Ohm
4 x Jumper Wires 3in M/M
8 x Jumper Wires 6in M/M
16 x Wire Solid Core – 22 AWG
2 x Full-Size Breadboard
1 x SparkFun Cerberus USB Cable

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 A0
MH1 – Analog A1
GPS – Digital 14
VIN – +3.3V
GND – GND

DL2005Mk04p.ino

// ***** Don Luc Electronics © *****
// Software Version Information
// Project #15: Environment - SparkFun Hydrogen Gas Sensor - MQ-8 - Mk06
// 05-04
// DL2005Mk04p.ino 15-06
// 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
// 1 x Pololu Adjustable Boost Regulator 2.5-9.5V
// 1 x Pololu Carrier for MQ Gas Sensors
// 1 x SparkFun Hydrogen Gas Sensor - MQ-8
// 1 x Qwiic Cable - 100mm
// 1 x LED Green
// 11 x 1K Ohm
// 1 x 4.7K Ohm
// 1 x 10K Ohm
// 4 x Jumper Wires 3in M/M
// 8 x Jumper Wires 6in M/M
// 16 x Wire Solid Core - 22 AWG
// 2 x Full-Size Breadboard
// 1 x SparkFun Cerberus USB Cable

// 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;

// 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};

// Software Version Information
String sver = "15-06";
// 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(0,5);
    display.println( "Gas H2 MQ8" );
    display.setCursor(0,25);
    display.print( iMQ8ppm );
    display.println( " ppm" );
    // 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 );
  
  // Caclulate the PPM of each gas sensors

  // Hydrogen Gas Sensor - MQ-8
  iMQ8ppm = isMQ8( iMQ8Raw ); 
  
}
// 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])));
  
}

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 );
  
  // Rotary Switch - 10 Position
  // Number 1 => 10
  if ( z >= 3600 ) {

    // Z
    iRotVal = 10;
    
  } else if ( z >= 3200 ) {

    // Z
    iRotVal = 9;
    
  } else if ( z >= 2700 ) {

    // Z
    iRotVal = 8;
    
  } else if ( z >= 2400 ) {

    // Z
    iRotVal = 7;
    
  } else if ( z >= 2000 ) {

    // Z
    iRotVal = 6;
    
  } else if ( z >= 1600 ) {

    // Z
    iRotVal = 5;
    
  } else if ( z >= 1200 ) {

    // Z
    iRotVal = 4;
    
  } else if ( z >= 900 ) {

    // Z
    iRotVal = 3;
    
  } else if ( z >= 500 ) {

    // Z
    iRotVal = 2;
    
  } else {

    // Z
    iRotVal = 1;
    
  }

  // Range Value
  switch ( iRotVal ) {
    case 1:

      // Display Environmental
      isDisplayEnvironmental();
      
      break;
    case 2:

      // Display Date
      isDisplayDate();
      
      break;
    case 3:

      // Display BME280
      isDisplayBME280();
      
      break;  
    case 4:

      // Display CCS811 - eCO2 & tVOC
      isDisplayCCS811();
      
      break;
    case 5:

      // Display Gas Sensors MQ
      isDisplayMQ();
      
      break;
    case 6:

      // Display UID
      isDisplayUID();
      
      break;       
    case 7:

      // Z
      isDisplayZ();
      
      break; 
    case 8:
         
      // Z
      isDisplayZ();
      
      break; 
    case 9:

      // Z
      isDisplayZ();
      
      break;
    case 10:

      // 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();

    // 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 = "";

  // 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
  zzzzzz = uid + "|" + sver + "|" + dateRTC + "|" + timeRTC + "|" + GPSStatus + "|" + TargetLat + "|" + TargetLon + "|" + BMEtempC + "|" + BMEhumid + "|" + BMEaltitudeM + "|" + BMEpressure + "|" + CCS811CO2 + "|" + CCS811TVOC + "|" + iMQ8ppm + "|\r";

  char msg[zzzzzz.length() + 1];

  zzzzzz.toCharArray(msg, zzzzzz.length() + 1);

  // Append File
  appendFile(SD, "/espdata.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();
    
}

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – SparkFun Hydrogen Gas Sensor – MQ-8 – Mk15

——

#DonLuc #Electronics #Components #MQ-8 #Microcontrollers #Environment #SparkFun #Pololu #Consultant #Vlog #Aphasia

——

Components

——

Components

——

Components

——

SparkFun Hydrogen Gas Sensor – MQ-8

SparkFun Item: SEN-10916

This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

1 x SparkFun Hydrogen Gas Sensor – MQ-8
1 x Pololu Carrier for MQ Gas Sensors
3 x Break Away Headers – Straight
1 x 4.7K Ohm

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – Pololu Carrier for MQ Gas Sensors – Mk14

——

#DonLuc #Electronics #Components #MQGasSensors #Microcontrollers #Environment #Pololu #Consultant #Vlog #Aphasia

——

Components

——

Components

——

Pololu Carrier for MQ Gas Sensors (Bare PCB Only)

Pololu Item: 1479

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—that are broken out with a 0.1″ spacing, making the board compatible with 0.1″ headers and standard breadboards and perfboards. This board has two mounting holes and provides convenient pads for mounting the gas sensor’s required sensitivity-setting resistor.

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – Pololu Adjustable Boost Regulator 2.5-9.5V – Mk13

——

#DonLuc #Electronics #Components #BoostRegulator #Microcontrollers #Environment #Pololu #Consultant #Vlog #Aphasia

——

Components

——

Components

——

Pololu Adjustable Boost Regulator 2.5-9.5V

Pololu Item: 791

This powerful, adjustable boost regulator can generate an output voltage as high as 9.5 V from an input voltage as low as 1.5 V. A trimmer potentiometer lets you set the boost regulator’s output voltage to a value between 2.5 and 9.5 V. The Pololu adjustable boost regulator is a very flexible switching regulator that can generate voltages higher than its input voltage. We offer adjustable ranges approximately 2.5 V to 9.5 V. The output voltage can be set using the trimmer potentiometer in the upper-right corner of the board.

Some example applications include:

-Powering 5 V or 3.3 V systems from lower-voltage batteries
-Powering 5 V subsystems (e.g. sensors) in lower-voltage (e.g. 3.3 V) systems
-Achieving consistent actuator operation when powered by fluctuating batteries
-Powering high-brightness LEDs or a large number of LEDs in series

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – Pololu DRV8834 Stepper Motor Driver – Mk06

——

Components

——

Components

——

Pololu DRV8834 Low-Voltage Stepper Motor Driver Carrier

Pololu Item: 2134

This is a breakout board for TI’s DRV8834 microstepping bipolar stepper motor driver. It has a pinout and interface that are nearly identical to those of our A4988 carriers, so it can be used as a drop-in replacement for those boards in many applications. The DRV8834 operates from 2.5–10.8 V, allowing stepper motors to be powered with voltages that are too low for other drivers, and can deliver up to approximately 1.5 A per phase continuously without a heat sink or forced air flow (up to 2 A peak). It features adjustable current limiting, overcurrent and overtemperature protection, and six microstep resolutions (down to 1/32-step). This board ships with 0.1in male header pins included but not soldered in.

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

Follow Us

The Alpha Geek

Why “The Alpha Geek”?

Aphasia

Don Luc Aphasia

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Facebook: https://www.facebook.com/neosteam.labs.9/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Twitter: https://twitter.com/labs_steam
Pinterest: https://www.pinterest.com/NeoSteamLabs/

Don Luc

Project #14: Components – Pololu 5V Step-Up Voltage Regulator – Mk01

——

Components

——

Components

——

Pololu Item: 2564

5V Step-Up Voltage Regulator U1V10F5

This tiny (0.35″×0.45″) U1V10F5 switching step-up (or boost) voltage regulator efficiently generates 5 V from input voltages as low as 0.5 V. Unlike most boost regulators, the U1V10F5 automatically switches to a linear down-regulation mode when the input voltage exceeds the output. The pins have a 0.1? spacing, making this board compatible with standard solderless breadboards and perfboards.

Follow Us

J. Luc Paquin – Curriculum Vitae
https://www.donluc.com/DLHackster/LucPaquinCVEngMk2020a.pdf

Web: https://www.donluc.com/
Web: http://www.jlpconsultants.com/
Web: https://www.donluc.com/DLHackster/
Web: https://www.hackster.io/neosteam-labs
Web: http://neosteamlabs.com/
YouTube: https://www.youtube.com/channel/UC5eRjrGn1CqkkGfZy0jxEdA
Facebook: https://www.facebook.com/neosteam.labs.9/
Instagram: https://www.instagram.com/neosteamlabs/
Pinterest: https://www.pinterest.com/NeoSteamLabs/
Twitter: https://twitter.com/labs_steam
Etsy: https://www.etsy.com/shop/NeoSteamLabs

Don Luc