| /* | |
| LiquidCrystal Library - Custom Characters | |
| Demonstrates how to add custom characters on an LCD display. | |
| The LiquidCrystal library works with all LCD displays that are | |
| compatible with the Hitachi HD44780 driver. There are many of | |
| them out there, and you can usually tell them by the 16-pin interface. | |
| This sketch prints "I <heart> Arduino!" and a little dancing man | |
| to the LCD. | |
| The circuit: | |
| * LCD RS pin to digital pin 12 | |
| * LCD Enable pin to digital pin 11 | |
| * LCD D4 pin to digital pin 5 | |
| * LCD D5 pin to digital pin 4 | |
| * LCD D6 pin to digital pin 3 | |
| * LCD D7 pin to digital pin 2 | |
| * LCD R/W pin to ground | |
| * 10K potentiometer: | |
| * ends to +5V and ground | |
| * wiper to LCD VO pin (pin 3) | |
| * 10K poterntiometer on pin A0 | |
| created 21 Mar 2011 | |
| by Tom Igoe | |
| modified 11 Nov 2013 | |
| by Scott Fitzgerald | |
| modified 7 Nov 2016 | |
| by Arturo Guadalupi | |
| Based on Adafruit's example at | |
| https://github.com/adafruit/SPI_VFD/blob/master/examples/createChar/createChar.pde | |
| This example code is in the public domain. | |
| http://www.arduino.cc/en/Tutorial/LiquidCrystalCustomCharacter | |
| Also useful: | |
| http://icontexto.com/charactercreator/ | |
| */ | |
| // include the library code: | |
| // initialize the library by associating any needed LCD interface pin | |
| // with the arduino pin number it is connected to | |
| const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2; | |
| LiquidCrystal lcd(rs, en, d4, d5, d6, d7); | |
| // make some custom characters: | |
| byte heart[8] = { | |
| 0b00000, | |
| 0b01010, | |
| 0b11111, | |
| 0b11111, | |
| 0b11111, | |
| 0b01110, | |
| 0b00100, | |
| 0b00000 | |
| }; | |
| byte smiley[8] = { | |
| 0b00000, | |
| 0b00000, | |
| 0b01010, | |
| 0b00000, | |
| 0b00000, | |
| 0b10001, | |
| 0b01110, | |
| 0b00000 | |
| }; | |
| byte frownie[8] = { | |
| 0b00000, | |
| 0b00000, | |
| 0b01010, | |
| 0b00000, | |
| 0b00000, | |
| 0b00000, | |
| 0b01110, | |
| 0b10001 | |
| }; | |
| byte armsDown[8] = { | |
| 0b00100, | |
| 0b01010, | |
| 0b00100, | |
| 0b00100, | |
| 0b01110, | |
| 0b10101, | |
| 0b00100, | |
| 0b01010 | |
| }; | |
| byte armsUp[8] = { | |
| 0b00100, | |
| 0b01010, | |
| 0b00100, | |
| 0b10101, | |
| 0b01110, | |
| 0b00100, | |
| 0b00100, | |
| 0b01010 | |
| }; | |
| void setup() { | |
| // initialize LCD and set up the number of columns and rows: | |
| lcd.begin(16, 2); | |
| // create a new character | |
| lcd.createChar(0, heart); | |
| // create a new character | |
| lcd.createChar(1, smiley); | |
| // create a new character | |
| lcd.createChar(2, frownie); | |
| // create a new character | |
| lcd.createChar(3, armsDown); | |
| // create a new character | |
| lcd.createChar(4, armsUp); | |
| // set the cursor to the top left | |
| lcd.setCursor(0, 0); | |
| // Print a message to the lcd. | |
| lcd.print("I "); | |
| lcd.write(byte(0)); // when calling lcd.write() '0' must be cast as a byte | |
| lcd.print(" Arduino! "); | |
| lcd.write((byte)1); | |
| } | |
| void loop() { | |
| // read the potentiometer on A0: | |
| int sensorReading = analogRead(A0); | |
| // map the result to 200 - 1000: | |
| int delayTime = map(sensorReading, 0, 1023, 200, 1000); | |
| // set the cursor to the bottom row, 5th position: | |
| lcd.setCursor(4, 1); | |
| // draw the little man, arms down: | |
| lcd.write(3); | |
| delay(delayTime); | |
| lcd.setCursor(4, 1); | |
| // draw him arms up: | |
| lcd.write(4); | |
| delay(delayTime); | |
| } | |