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76 lines
1.7 KiB
Plaintext
76 lines
1.7 KiB
Plaintext
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/*
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ShiftLCD Library - Backlight
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Demonstrates the use a 16x2 LCD display. The ShiftLCD library works with
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all LCD displays that are compatible with the Hitachi HD44780 driver.
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There are many of them out there, and you can usually tell them by the
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16-pin interface.
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This sketch displays "Hello, World!" and then flashes the display
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on and off once a second
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The circuit:
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---Shift Register 74HC595---
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* SR Pin 14 to Arduino pin 2
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* SR Pin 12 to Arduino pin 3
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* SR Pin 11 to Arduino pin 4
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* SR Pin 8 to Ground
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* SR Pin 16 to +5v
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* SR Pin 13 to Ground
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* SR Pin 10 to +5v
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-----Shift Reg to LCD--------
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* SR Pin 15 to D7
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* SR Pin 1 to D6
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* SR Pin 2 to D5
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* SR Pin 3 to D4
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* SR Pin 5 to MOSFET gate
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* SR Pin 6 to Enable
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* SR Pin 7 to RS
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-----LCD HD44780-------------
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* Vss to Ground
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* Vdd to +5V
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* Vo to 10k Wiper
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* R/W to Ground
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* 5v to +5v
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* Gnd to MOSFET Drain
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------N Chanel MOSFET--------
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* Source to Ground
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* Gate to SP Pin 5
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* Drain to LCD Gnd
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* 1k Resistor Between gate and source
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For a more detailed schematic, please see my blog:
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http://cjparish.blogspot.com/2010/01/controlling-lcd-display-with-shift.html
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Library modified from the original LiquidCrystal Library
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Example by
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Chris Parish, January 12th 2010
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*/
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// include the library code:
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#include <ShiftLCD.h>
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// initalise the library with the numbers of the interface pins
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ShiftLCD lcd(2,4,3);
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void setup()
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{
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// set up the LCD's number of rows and columns:
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lcd.begin(16,2);
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// Output Hello, World!
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lcd.print("Hello, World!");
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}
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void loop()
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{
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// Turn the backlight on
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lcd.backlightOn();
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delay(1000);
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// Turn the backlight off
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lcd.backlightOff();
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delay(1000);
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}
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