Small Displays (16 x 2 LCD Display)

1 Small Displays ( 16 x 2 lcd display ). The Pieces The Theory & Code liquid crystal Displays (LCD). liquid crystal display An LCD is a Small low cost display . It is easy to interface with a micro-controller (Craftdata BC1602A) because of an embedded controller(the black blob on the back of the board). x1 This controller is standard across many Displays (HD 44780) which means many micro-controllers (including the Arduino) have libraries that make displaying messages as easy as a single line of code. Potentiometer (10k Ohm) Testing x1 Testing your LCD with an Arduino is really simple.

2 Wire up your display using the schematic or breadboard layout sheet. Then open the Arduino IDE and open the example program. File > Sketchbook > Examples > Library-LiquidCrystal > HelloWorld The Schematic Upload to your board and watch as "hello, world!" is shown on your display . If no message is displayed the contrast may need to be adjusted. To do this turn Potentiometer the potentiometer. gnd (ground) (-) Library Summary (here's a summary of the LCD library for a full reference visit ). 1 LiquidCrystal(rs, rw, enable, d4, d5, d6, d7) - create a new 1.

3 Vss (gnd) +5 volts Vdd (5v) LiquidCrystal object using a 4 bit data bus Vo (contrast). RS pin 12. LiquidCrystal(rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7) - create R/W a new LiquidCrystal object using an 8 bit data bus Enable Data 0 clear() - Clears the display and moves the cursor to upper left corner Data 1 pin 11. LCD Data 2. home() - Moves the cursor to the upper left corner Arduino Data 3 pin 5 setCursor(col, row) - moves the cursor to column col and row row Data 4. Data 5 pin 4 write(data) - writes the char data to the display Data 6. Data 7 pin 3 print(data) - prints a string to the display (5v).

4 Pin 2. Technical Details (gnd). 16..: Summary LCD Datasheet: :..: Full LCD Datasheet: :. The Circuit The Layout Sheet Potentiometer (variable resistor). A B C D E F Gto H Gnd I J. 1 V+ to 5v 1. 2 2. 3 gnd 3. 4 4. 5 5. 6 6. 1. Vss7(gnd) 7. Vdd8 (5v) 8. Vo (contrast). 9 9. 10 RS to pin 12 10. 11 R/W 11. Enable 12 to pin 11 12. Data 0. 13 13. Data 1. 14 14. Data 2. 15 15. Data 3. 16 16. Data 4. 17 to pin 5 17. Data 5. 18 to pin 4 18. Data 6. 19 to pin 3 19. Data 7. 20 to pin 2 20. B/light 21 (5v) 21. 22 (gnd) 22. 16. 23 23. 24 24. 25 25. 26 CIRC-18. 26. 27 Showing27.

5 Text 28. (LCD Displays ). 28. 29 29. 30 30. A B C D E F G H I J..: Instructions: print out, cut out, get making :..: for more details visit.