Luc Paquin
Published © CC BY-NC

Project #28 – Sensors – Grayscale Sensor – Mk20

Project #28 – Sensors – Grayscale Sensor – Mk20

BeginnerFull instructions provided1 hour40
Project #28 – Sensors – Grayscale Sensor – Mk20

Things used in this project

Hardware components

DFRobot FireBeetle 2 ESP32-E
×1
DFRobot FireBeetle 2 ESP32-E
×1
DFRobot Fermion: 3.5” 480x320 TFT LCD Capacitive
×1
DFRobot Fermion: 3.5” 480x320 TFT LCD Capacitive
×1
DFRobot GDL Line 10 CM
×1
DFRobot GDL Line 10 CM
×1
DFRobot Gravity: IO Shield for FireBeetle 2
×1
DFRobot Gravity: IO Shield for FireBeetle 2
×1
DFRobot Terminal Block Board for FireBeetle 2 ESP32-E IoT
×1
DFRobot Terminal Block Board for FireBeetle 2 ESP32-E IoT
×1
DFRobot Gravity: Analog Grayscale Sensor
×1
DFRobot Gravity: Analog Grayscale Sensor
×1
DFRobot Gravity: Digital RGB LED Module
×1
DFRobot Gravity: Digital RGB LED Module
×1
DFRobot Lithium Ion Battery - 1000mAh
×1
DFRobot Lithium Ion Battery - 1000mAh
×1
DFRobot USB 3.0 to Type-C Cable
×1
DFRobot USB 3.0 to Type-C Cable
×1

Software apps and online services

Arduino IDE
Arduino IDE
Arduino IDE
Arduino IDE

Story

Read more

Schematics

Fritzing

Code

DL2512Mk01p.ino

Arduino
/****** Don Luc Electronics © ******
Software Version Information
Project #28 – Sensors – Grayscale Sensor – Mk20
28-20
DL2512Mk01p.ino
DL2512Mk01
1 x DFRobot FireBeetle 2 ESP32-E
1 x Fermion: 3.5” 480x320 TFT LCD Capacitive
1 x GDL Line 10 CM
1 x Gravity: IO Shield for FireBeetle 2
1 x Terminal Block Board for FireBeetle 2 ESP32-E IoT
1 x Gravity: Analog Grayscale Sensor
1 x Gravity: Digital RGB LED Module
1 x Lithium Ion Battery - 1000mAh
1 x USB 3.0 to Type-C Cable
*/

// Include the Library Code
// EEPROM Library to Read and Write EEPROM
// with Unique ID for Unit
#include "EEPROM.h"
// Arduino
#include "Arduino.h"
// DFRobot Display GDL API
#include <DFRobot_GDL.h>
// Adafruit NeoPixel
#include <Adafruit_NeoPixel.h>

// Which pin on the Arduino is connected to the NeoPixels?
#define iNeo D11
// How many NeoPixels are attached to the Arduino?
#define NUMPIXELS 1
// When setting up the NeoPixel library.
Adafruit_NeoPixel pixels(NUMPIXELS, iNeo, NEO_GRB + NEO_KHZ800);

// Grayscale Sensor
int iGray = A0;
// Volume
int iVol;

// Defined ESP32
#define TFT_DC  D2
#define TFT_CS  D6
#define TFT_RST D3

/*dc=*/ /*cs=*/ /*rst=*/
// DFRobot Display 320x480
DFRobot_ILI9488_320x480_HW_SPI screen(TFT_DC, TFT_CS, TFT_RST);

// EEPROM Unique ID Information
#define EEPROM_SIZE 64
String uid = "";

// Software Version Information
String sver = "28-20";

void loop() {
  
  // isGray
  isGray();

  // isDisplayGray
  isDisplayGray();

  // Delay
  delay( 1000 );
  
}

getDisplay.ino

Arduino
// DFRobot Display 320x480
// DFRobot Display 320x480 - UID
void isDisplayUID(){

  // DFRobot Display 320x480
  // Text Display
  // Text Wrap
  screen.setTextWrap(false);
  // Rotation
  screen.setRotation(3);
  // Fill Screen => black
  screen.fillScreen(0x0000);
  // Text Color => white
  screen.setTextColor(0xffff);
  // Font => Free Sans Bold 12pt
  screen.setFont(&FreeSansBold12pt7b);
  // TextSize => 1.5
  screen.setTextSize(1.5);
  // Don Luc Electronics
  screen.setCursor(0, 30);
  screen.println("Don Luc Electronics");
  // SD
  screen.setCursor(0, 60);
  screen.println("Grayscale Sensor");
  // Version
  screen.setCursor(0, 90);
  screen.println("Version");
  screen.setCursor(0, 120);
  screen.println( sver );
  // EEPROM
  screen.setCursor(0, 150);
  screen.println("EEPROM");
  screen.setCursor(0, 180);
  screen.println( uid );

}
// isDisplayGray
void isDisplayGray(){

  // DFRobot Display 320x480
  // Text Display
  // Text Wrap
  screen.setTextWrap(false);
  // Rotation
  screen.setRotation(3);
  // Fill Screen => white
  screen.fillScreen(0xffff);
  // Text Color => blue
  screen.setTextColor(0x001F);
  // Font => Free Sans Bold 12pt
  screen.setFont(&FreeSansBold12pt7b);
  // TextSize => 1.5
  screen.setTextSize(1.5);
  // Accelerometer
  screen.setCursor(0, 30);
  screen.println("Grayscale Sensor");
  screen.setCursor(0, 90);
  screen.println( iVol );

}

getEEPROM.ino

Arduino
// EEPROM
// isUID EEPROM Unique ID
void isUID() {
  
  // Is Unit ID
  uid = "";
  for (int x = 0; x < 7; x++)
  {
    uid = uid + char(EEPROM.read(x));
  }

}

getGray.ino

Arduino
// Grayscale Sensor
// isGray
void isGray(){
  
  // Grayscale Sensor
  iVol = analogRead( iGray );

  // The first NeoPixel in a strand is #0, second is 1, all the way up
       // to the count of pixels minus one. // For each pixel...
 for(int i=0; i<NUMPIXELS; i++) { 

    // Set all pixel colors to 'Off'
    pixels.clear();

    // in case the sensor value is outside the range seen during calibration
    int sensorValue = constrain(iVol, 255, 0); 
    
    pixels.setBrightness( sensorValue );

    // pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
    // Wh1te
    pixels.setPixelColor(i, pixels.Color(255, 255, 205));

    // Send the updated pixel colors to the hardware.
    pixels.show();

 }

}

setup.ino

Arduino
// Setup
void setup()
{
 
  // Delay
  delay( 100 );

  // EEPROM Size
  EEPROM.begin(EEPROM_SIZE);

  // EEPROM Unique ID
  isUID();

  // Delay
  delay( 100 );
  
  // DFRobot Display 320x480
  screen.begin();

  // Delay
  delay(100);

  // INITIALIZE NeoPixel strip object
  pixels.begin();

  // Delay
  delay(100);

  // DFRobot Display 320x480 - UID
  // Don Luc Electronics
  // Version
  // EEPROM
  isDisplayUID();

  // Delay 5 Second
  delay( 5000 );

}

Credits

Luc Paquin
75 projects • 5 followers
Teacher, Instructor, E-Mentor, R&D and Consulting -Programming Language -Microcontrollers -IoT -Robotics -Machine Learning -AI -Sensors

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