Created
October 1, 2018 09:25
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/* | |
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); | |
} |
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