Project #28 – Sensors – SparkFun Line Sensor QRE1113 – Mk06

Published October 28, 2023 | By DonLuc

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#DonLucElectronics #DonLuc #Sensors #LineSensor #AlcoholGasSensor #MinIMU9 #Pololu #Adafruit #SparkFun #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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SparkFun Line Sensor QRE1113 (Analog)

This version of the QRE1113 breakout board features an easy-to-use analog output, which will vary depending on the amount of IR light reflected back to the sensor. This tiny board is perfect for line sensing applications and can be used in both 3.3V and 5V systems.

The board’s QRE1113 IR reflectance sensor is comprised of two parts – an IR emitting LED and an IR sensitive phototransistor. When you apply power to the VCC and GND pins the IR LED inside the sensor will illuminate. A 100 Ohm resistor is on-board and placed in series with the LED to limit current. A 10k Ohm resistor pulls the output pin high, but when the light from the LED is reflected back onto the phototransistor the output will begin to go lower. The more IR light sensed by the phototransistor, the lower the output voltage of the breakout board.

These sensors are widely used in line following robots, white surfaces reflect much more light than black, so, when directed towards a white surface, the voltage output will be lower than that on a black surface.

DL2308Mk07

1 x Adafruit METRO M0 Express
1 x DS3231 Precision RTC FeatherWing
1 x Pololu MinIMU-9 v5 Gyro, Accelerometer, and Compass
1 x Pololu Carrier for MQ Gas Sensors
1 x Alcohol Gas Sensor – MQ-3
1 x SparkFun Line Sensor – QRE1113
1 x ProtoScrewShield
1 x Rocker Switch – SPST
2 x Resistor 10K Ohm
1 x CR1220 3V Lithium Coin Cell Battery
1 x SparkFun Cerberus USB Cable

Adafruit METRO M0 Express

LED – LED_BUILTIN
SDA – Digital 20
SCL – Digital 21
SW1 – Digital 2
MQ3 – Analog 0
LSB – Analog 1
VIN – +3.3V
VIN – +5V
GND – GND

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DL2308Mk07p.ino

/****** Don Luc Electronics © ******

Software Version Information

Project #28 - Sensors - SparkFun Line Sensor QRE1113 - Mk06

28-06

DL2308Mk07p.ino

1 x Adafruit METRO M0 Express

1 x DS3231 Precision RTC FeatherWing

1 x Pololu MinIMU-9 v5 Gyro, Accelerometer, and Compass

1 x Pololu Carrier for MQ Gas Sensors

1 x Alcohol Gas Sensor - MQ-3

1 x SparkFun Line Sensor - QRE1113

1 x ProtoScrewShield

1 x Rocker Switch - SPST

2 x Resistor 10K Ohm

1 x CR1220 3V Lithium Coin Cell Battery

1 x SparkFun Cerberus USB Cable

// Include the Library Code

// DS3231 Precision RTC

#include <RTClib.h>

// Two Wire Interface (TWI/I2C)

#include <Wire.h>

// Keyboard

#include <Keyboard.h>

// Includes and variables for IMU integration

// STMicroelectronics LSM6DS33 Gyroscope and Accelerometer

#include <LSM6.h>

// STMicroelectronics LIS3MDL Magnetometer

#include <LIS3MDL.h>

// Keyboard

String sKeyboard = "";

// DS3231 Precision RTC

RTC_DS3231 rtc;

String dateRTC = "";

String timeRTC = "";

// Pololu 9DoF IMU

// STMicroelectronics LSM6DS33 Gyroscope and Accelerometer

LSM6 imu;

// Accelerometer and Gyroscopes

// Accelerometer

int imuAX;

int imuAY;

int imuAZ;

// Gyroscopes

int imuGX;

int imuGY;

int imuGZ;

// STMicroelectronics LIS3MDL Magnetometer

LIS3MDL mag;

// Magnetometer

int magX;

int magY;

int magZ;

// Gas Sensors MQ

// Alcohol Gas Sensor - MQ-3

int iMQ3 = A0;

int iMQ3Raw = 0;

int iMQ3ppm = 0;

// SparkFun Line Sensor - QRE1113 (Analog)

int iLine = A1;

int iLineSensor = 0;

// The number of the Rocker Switch pin

int iSwitch = 2;

// Variable for reading the button status

int SwitchState = 0;

// Software Version Information

String sver = "28-06";

void loop() {

// Date and Time RTC

isRTC ();

// Pololu Accelerometer and Gyroscopes

isIMU();

// Pololu Magnetometer

isMag();

// Gas Sensors MQ

isGasSensor();

// SparkFun Line Sensor

isLineSensor();

// Read the state of the Switch value:

SwitchState = digitalRead(iSwitch);

// Check if the button is pressed. If it is, the SwitchState is HIGH:

if (SwitchState == HIGH) {

Keyboard.println(sKeyboard);

}

// Delay 1 Second

delay(1000);

}

/****** Don Luc Electronics © ****** Software Version Information Project #28 - Sensors - SparkFun Line Sensor QRE1113 - Mk06 28-06 DL2308Mk07p.ino 1 x Adafruit METRO M0 Express 1 x DS3231 Precision RTC FeatherWing 1 x Pololu MinIMU-9 v5 Gyro, Accelerometer, and Compass 1 x Pololu Carrier for MQ Gas Sensors 1 x Alcohol Gas Sensor - MQ-3 1 x SparkFun Line Sensor - QRE1113 1 x ProtoScrewShield 1 x Rocker Switch - SPST 2 x Resistor 10K Ohm 1 x CR1220 3V Lithium Coin Cell Battery 1 x SparkFun Cerberus USB Cable */ // Include the Library Code // DS3231 Precision RTC #include <RTClib.h> // Two Wire Interface (TWI/I2C) #include <Wire.h> // Keyboard #include <Keyboard.h> // Includes and variables for IMU integration // STMicroelectronics LSM6DS33 Gyroscope and Accelerometer #include <LSM6.h> // STMicroelectronics LIS3MDL Magnetometer #include <LIS3MDL.h> // Keyboard String sKeyboard = ""; // DS3231 Precision RTC RTC_DS3231 rtc; String dateRTC = ""; String timeRTC = ""; // Pololu 9DoF IMU // STMicroelectronics LSM6DS33 Gyroscope and Accelerometer LSM6 imu; // Accelerometer and Gyroscopes // Accelerometer int imuAX; int imuAY; int imuAZ; // Gyroscopes int imuGX; int imuGY; int imuGZ; // STMicroelectronics LIS3MDL Magnetometer LIS3MDL mag; // Magnetometer int magX; int magY; int magZ; // Gas Sensors MQ // Alcohol Gas Sensor - MQ-3 int iMQ3 = A0; int iMQ3Raw = 0; int iMQ3ppm = 0; // SparkFun Line Sensor - QRE1113 (Analog) int iLine = A1; int iLineSensor = 0; // The number of the Rocker Switch pin int iSwitch = 2; // Variable for reading the button status int SwitchState = 0; // Software Version Information String sver = "28-06"; void loop() { // Date and Time RTC isRTC (); // Pololu Accelerometer and Gyroscopes isIMU(); // Pololu Magnetometer isMag(); // Gas Sensors MQ isGasSensor(); // SparkFun Line Sensor isLineSensor(); // Read the state of the Switch value: SwitchState = digitalRead(iSwitch); // Check if the button is pressed. If it is, the SwitchState is HIGH: if (SwitchState == HIGH) { Keyboard.println(sKeyboard); } // Delay 1 Second delay(1000); }

/****** Don Luc Electronics © ******
Software Version Information
Project #28 - Sensors - SparkFun Line Sensor QRE1113 - Mk06
28-06
DL2308Mk07p.ino
1 x Adafruit METRO M0 Express
1 x DS3231 Precision RTC FeatherWing
1 x Pololu MinIMU-9 v5 Gyro, Accelerometer, and Compass
1 x Pololu Carrier for MQ Gas Sensors
1 x Alcohol Gas Sensor - MQ-3
1 x SparkFun Line Sensor - QRE1113
1 x ProtoScrewShield
1 x Rocker Switch - SPST
2 x Resistor 10K Ohm
1 x CR1220 3V Lithium Coin Cell Battery
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// DS3231 Precision RTC 
#include <RTClib.h>
// Two Wire Interface (TWI/I2C)
#include <Wire.h>
// Keyboard
#include <Keyboard.h>
// Includes and variables for IMU integration
// STMicroelectronics LSM6DS33 Gyroscope and Accelerometer
#include <LSM6.h>
// STMicroelectronics LIS3MDL Magnetometer
#include <LIS3MDL.h>

// Keyboard
String sKeyboard = "";

// DS3231 Precision RTC 
RTC_DS3231 rtc;
String dateRTC = "";
String timeRTC = "";

// Pololu 9DoF IMU
// STMicroelectronics LSM6DS33 Gyroscope and Accelerometer
LSM6 imu;
// Accelerometer and Gyroscopes
// Accelerometer
int imuAX;
int imuAY;
int imuAZ;
// Gyroscopes 
int imuGX;
int imuGY;
int imuGZ;
// STMicroelectronics LIS3MDL Magnetometer
LIS3MDL mag;
// Magnetometer
int magX;
int magY;
int magZ;

// Gas Sensors MQ
// Alcohol Gas Sensor - MQ-3
int iMQ3 = A0;
int iMQ3Raw = 0;
int iMQ3ppm = 0;

// SparkFun Line Sensor - QRE1113 (Analog)
int iLine = A1;
int iLineSensor = 0;

// The number of the Rocker Switch pin
int iSwitch = 2;
// Variable for reading the button status
int SwitchState = 0;

// Software Version Information
String sver = "28-06";

void loop() {

  // Date and Time RTC
  isRTC ();

  // Pololu Accelerometer and Gyroscopes
  isIMU();

  // Pololu Magnetometer
  isMag();

  // Gas Sensors MQ
  isGasSensor();

  // SparkFun Line Sensor
  isLineSensor();

  // Read the state of the Switch value:
  SwitchState = digitalRead(iSwitch);

  // Check if the button is pressed. If it is, the SwitchState is HIGH:
  if (SwitchState == HIGH) {

     Keyboard.println(sKeyboard);
    
  }

  // Delay 1 Second
  delay(1000);

}

getAccelGyro.ino

// Accelerometer and Gyroscopes

// Setup IMU

void setupIMU() {

// Setup IMU

imu.init();

// Default

imu.enableDefault();

}

// Accelerometer and Gyroscopes

void isIMU() {

// Accelerometer and Gyroscopes

imu.read();

// Accelerometer x, y, z

imuAX = imu.a.x;

imuAY = imu.a.y;

imuAZ = imu.a.z;

// Gyroscopes x, y, z

imuGX = imu.g.x;

imuGY = imu.g.y;

imuGZ = imu.g.z;

// Keyboard

sKeyboard = sKeyboard + String(imuAX) + "|" + String(imuAY) + "|"

+ String(imuAZ) + "|";

sKeyboard = sKeyboard + String(imuGX) + "|" + String(imuGY) + "|"

+ String(imuGZ) + "|";

}

// Accelerometer and Gyroscopes // Setup IMU void setupIMU() { // Setup IMU imu.init(); // Default imu.enableDefault(); } // Accelerometer and Gyroscopes void isIMU() { // Accelerometer and Gyroscopes imu.read(); // Accelerometer x, y, z imuAX = imu.a.x; imuAY = imu.a.y; imuAZ = imu.a.z; // Gyroscopes x, y, z imuGX = imu.g.x; imuGY = imu.g.y; imuGZ = imu.g.z; // Keyboard sKeyboard = sKeyboard + String(imuAX) + "|" + String(imuAY) + "|" + String(imuAZ) + "|"; sKeyboard = sKeyboard + String(imuGX) + "|" + String(imuGY) + "|" + String(imuGZ) + "|"; }

// Accelerometer and Gyroscopes
// Setup IMU
void setupIMU() {

  // Setup IMU
  imu.init();
  // Default
  imu.enableDefault();
  
}
// Accelerometer and Gyroscopes
void isIMU() {

  // Accelerometer and Gyroscopes
  imu.read();
  // Accelerometer x, y, z
  imuAX = imu.a.x;
  imuAY = imu.a.y;
  imuAZ = imu.a.z;
  // Gyroscopes x, y, z
  imuGX = imu.g.x;
  imuGY = imu.g.y;
  imuGZ = imu.g.z;

  // Keyboard
  sKeyboard = sKeyboard + String(imuAX) + "|" + String(imuAY) + "|"
  + String(imuAZ) + "|";
  sKeyboard = sKeyboard + String(imuGX) + "|" + String(imuGY) + "|"
  + String(imuGZ) + "|";
  
}

getGasSensorMQ.ino

// Gas Sensors MQ

// Gas Sensor

void isGasSensor() {

// Read in analog value from each gas sensors

// Alcohol Gas Sensor - MQ-3

iMQ3ppm = isMQ3( iMQ3Raw );

// Keyboard

sKeyboard = sKeyboard + String(iMQ3ppm) + "|";

}

// Alcohol Gas Sensor - MQ-3

int isMQ3(double rawValue) {

double RvRo = rawValue;

// % BAC = breath mg/L * 0.21

double bac = RvRo * 0.21;

return bac;

}

// Gas Sensors MQ // Gas Sensor void isGasSensor() { // Read in analog value from each gas sensors // Alcohol Gas Sensor - MQ-3 iMQ3ppm = isMQ3( iMQ3Raw ); // Keyboard sKeyboard = sKeyboard + String(iMQ3ppm) + "|"; } // Alcohol Gas Sensor - MQ-3 int isMQ3(double rawValue) { double RvRo = rawValue; // % BAC = breath mg/L * 0.21 double bac = RvRo * 0.21; return bac; }

// Gas Sensors MQ
// Gas Sensor
void isGasSensor() {

  // Read in analog value from each gas sensors
  // Alcohol Gas Sensor - MQ-3
  iMQ3ppm = isMQ3( iMQ3Raw );

  // Keyboard
  sKeyboard = sKeyboard + String(iMQ3ppm) + "|";

}
// Alcohol Gas Sensor - MQ-3
int isMQ3(double rawValue) {

  double RvRo = rawValue;
  // % BAC = breath mg/L * 0.21
  double bac = RvRo * 0.21;
  return bac;
  
}

getIMUMagnetometer.ino

// IMU Magnetometer

// Setup Magnetometer

void setupMag() {

// Setup Magnetometer

mag.init();

// Default

mag.enableDefault();

}

// Magnetometer

void isMag() {

// Magnetometer

mag.read();

// Magnetometer x, y, z

magX = mag.m.x;

magY = mag.m.y;

magZ = mag.m.z;

// Keyboard

sKeyboard = sKeyboard + String(magX) + "|" + String(magY) + "|"

+ String(magZ) + "|";

}

// IMU Magnetometer // Setup Magnetometer void setupMag() { // Setup Magnetometer mag.init(); // Default mag.enableDefault(); } // Magnetometer void isMag() { // Magnetometer mag.read(); // Magnetometer x, y, z magX = mag.m.x; magY = mag.m.y; magZ = mag.m.z; // Keyboard sKeyboard = sKeyboard + String(magX) + "|" + String(magY) + "|" + String(magZ) + "|"; }

// IMU Magnetometer
// Setup Magnetometer
void setupMag() {

  // Setup Magnetometer
  mag.init();
  // Default
  mag.enableDefault();
  
}
// Magnetometer
void isMag() {

  // Magnetometer
  mag.read();
  // Magnetometer x, y, z
  magX = mag.m.x;
  magY = mag.m.y;
  magZ = mag.m.z;

  // Keyboard
  sKeyboard = sKeyboard + String(magX) + "|" + String(magY) + "|" 
  + String(magZ) + "|";
  
}

getLineSensor.ino

// Line Sensor

// isLine Sensor

void isLineSensor(){

// Line Sensor

iLineSensor = analogRead(iLine);

// Keyboard

sKeyboard = sKeyboard + String(iLineSensor) + "|*";

}

// Line Sensor // isLine Sensor void isLineSensor(){ // Line Sensor iLineSensor = analogRead(iLine); // Keyboard sKeyboard = sKeyboard + String(iLineSensor) + "|*"; }

// Line Sensor
// isLine Sensor
void isLineSensor(){

  // Line Sensor
  iLineSensor = analogRead(iLine);

  // Keyboard
  sKeyboard = sKeyboard + String(iLineSensor) + "|*";
  
}

getRTC.ino

// Date & Time

// DS3231 Precision RTC

void setupRTC() {

// DS3231 Precision RTC

if (! rtc.begin()) {

//Serial.println("Couldn't find RTC");

//Serial.flush();

while (1) delay(10);

}

if (rtc.lostPower()) {

//Serial.println("RTC lost power, let's set the time!");

// When time needs to be set on a new device, or after a power loss, the

// 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(2023, 8, 10, 11, 0, 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;

// Keyboard

sKeyboard = "SEN|" + sver + "|" + String(dateRTC) + "|" +

String(timeRTC) + "|";

}

// Date & Time // DS3231 Precision RTC void setupRTC() { // DS3231 Precision RTC if (! rtc.begin()) { //Serial.println("Couldn't find RTC"); //Serial.flush(); while (1) delay(10); } if (rtc.lostPower()) { //Serial.println("RTC lost power, let's set the time!"); // When time needs to be set on a new device, or after a power loss, the // 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(2023, 8, 10, 11, 0, 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; // Keyboard sKeyboard = "SEN|" + sver + "|" + String(dateRTC) + "|" + String(timeRTC) + "|"; }

// Date & Time
// DS3231 Precision RTC
void setupRTC() {

  // DS3231 Precision RTC
  if (! rtc.begin()) {
    //Serial.println("Couldn't find RTC");
    //Serial.flush();
    while (1) delay(10);
  }

  if (rtc.lostPower()) {
    //Serial.println("RTC lost power, let's set the time!");
    // When time needs to be set on a new device, or after a power loss, the
    // 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(2023, 8, 10, 11, 0, 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;

  // Keyboard
  sKeyboard = "SEN|" + sver + "|" + String(dateRTC) + "|" + 
  String(timeRTC) + "|";
  
}

setup.ino

// Setup

void setup()

{

// Give display time to power on

delay(100);

// Wire - Inialize I2C Hardware

Wire.begin();

// Give display time to power on

delay(100);

// Date & Time RTC

// DS3231 Precision RTC

setupRTC();

// Initialize control over the keyboard:

Keyboard.begin();

// Pololu Setup IMU

setupIMU();

// Pololu Setup Magnetometer

setupMag();

// Initialize the Switch pin as an input

pinMode(iSwitch, INPUT);

// Initialize digital pin LED_BUILTIN as an output

pinMode(LED_BUILTIN, OUTPUT);

// Turn the LED on HIGH

digitalWrite(LED_BUILTIN, HIGH);

// Delay 5 Second

delay( 5000 );

}

// Setup void setup() { // Give display time to power on delay(100); // Wire - Inialize I2C Hardware Wire.begin(); // Give display time to power on delay(100); // Date & Time RTC // DS3231 Precision RTC setupRTC(); // Initialize control over the keyboard: Keyboard.begin(); // Pololu Setup IMU setupIMU(); // Pololu Setup Magnetometer setupMag(); // Initialize the Switch pin as an input pinMode(iSwitch, INPUT); // Initialize digital pin LED_BUILTIN as an output pinMode(LED_BUILTIN, OUTPUT); // Turn the LED on HIGH digitalWrite(LED_BUILTIN, HIGH); // Delay 5 Second delay( 5000 ); }

// Setup
void setup()
{
  
  // Give display time to power on
  delay(100);
  
  // Wire - Inialize I2C Hardware
  Wire.begin();

  // Give display time to power on
  delay(100);

  // Date & Time RTC
  // DS3231 Precision RTC 
  setupRTC();
  
  // Initialize control over the keyboard:
  Keyboard.begin();

  // Pololu Setup IMU
  setupIMU();

  // Pololu Setup Magnetometer
  setupMag();

  // Initialize the Switch pin as an input
  pinMode(iSwitch, INPUT);

  // Initialize digital pin LED_BUILTIN as an output
  pinMode(LED_BUILTIN, OUTPUT);
  // Turn the LED on HIGH
  digitalWrite(LED_BUILTIN, HIGH);

  // Delay 5 Second
  delay( 5000 );

}

——

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Posted in #28 - Sensors, Adafruit, Arduino, Digital Electronics, Fritzing, Microcontrollers, Pololu, Program, Program Arduino, Projects, SparkFun | Tagged Accelerometer, Adafruit, Arduino, Components, Consultant, Electronics, Fritzing, Gyroscope, Magnetometer, Microcontrollers, Pololu, Programming, Project, Sensors, SparkFun, SparkFun Line Sensor QRE1113, Technology, Video Blog, Vlog

Project #28 – Sensors – SparkFun Line Sensor QRE1113 – Mk06

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