Demo Video

In this project we are going to display the LED brightness on a LCD 16×2 with progress bar.

Materials:

Breadboard:

CONNECTIONS:

 

Upload the following code to the Arduino.

/*
Created by Rui Santos
All the resources for this project:
http://randomnerdtutorials.com/
Based on some Arduino code examples
*/
// include the library code
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int potPin = A0; // Analog pin 0 for the LED brightness potentiometer
int ledPin = 6; // LED Digital Pin with PWM
int potValue = 0; // variable to store the value coming from the potentiometer
int brightness = 0; // converts the potValue into a brightness
int pBari = 0; // progress bar
int i = 0; // foor loop
//progress bar character for brightness
byte pBar[8] = {
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
};
void setup() {
// setup our led as an OUTPUT
pinMode(ledPin, OUTPUT);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD
lcd.print(" LED Brightness");
//Create the progress bar character
lcd.createChar(0, pBar);
}
void loop() {
// clears the LCD screen
lcd.clear();
// Print a message to the LCD
lcd.print(" LED Brightness");
Upload the following code to the Arduino IDE:
/*
Created by Rui Santos
All the resources for this project:
http://randomnerdtutorials.com/
Based on some Arduino code examples
*/
// include the library code
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int potPin = A0; // Analog pin 0 for the LED brightness potentiometer
int ledPin = 6; // LED Digital Pin with PWM
int potValue = 0; // variable to store the value coming from the potentiometer
int brightness = 0; // converts the potValue into a brightness
int pBari = 0; // progress bar
int i = 0; // foor loop
//progress bar character for brightness
byte pBar[8] = {
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
};
void setup() {
// setup our led as an OUTPUT
pinMode(ledPin, OUTPUT);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD
lcd.print(" LED Brightness");
//Create the progress bar character
lcd.createChar(0, pBar);
}
void loop() {
// clears the LCD screen
lcd.clear();
// Print a message to the LCD
lcd.print(" LED Brightness");
//set the cursor to line number 2
lcd.setCursor(0,1);
// read the value from the potentiometer
potValue = analogRead(potPin);
// turns the potValue into a brightness for the LED
brightness=map(potValue, 0, 1024, 0, 255);
//lights up the LED according to the bightness
analogWrite(ledPin, brightness);
// turns the brighness into a percentage for the bar
pBari=map(brightness, 0, 255, 0, 17);
//prints the progress bar
for (i=0; i<pBari; i++)
{
lcd.setCursor(i, 1);
lcd.write(byte(0));
}
// delays 750 ms
delay(750);
}
view rawLED_Brightness.ino hosted with ? by GitHub

Documented by: Kayle Urbano

For more details about the projects, see the following reference: Electronics Projects, Tutorials and Reviews. (n.d.). Retrieved from https://randomnerdtutorials.com/