View source for Serial UART 16x2 LCD 3.3V

= Introduction =
The serial UART 16x2 LCD allows you to control a parallel based LCD over a single-wire serial interface. The serial LCD takes care of all the HD44780 commands allowing seamless integration with any micro that can communicate over a wide range of TTL serial baud rates. The
Communication with Serial 16x2 LCD requires 3.3V TTL serial at a default baud rate of 9600bps (8-N-1). You can adjust the baud to any standard rate between 2400 and 38400bps. The power, ground and RX pins are all broken out to a 4-pin 2.54mm pitch header.
Serial 16x2 LCD has the ability to dim the backlight to conserve power if needed. There is also a potentiometer on the backpack to adjust the contrast.

[[File:LED 3.3V.jpg| 640px]]

[[File:LED 3.3V A.jpg| 640px]]

= Features =
Embedded PIC 16F88 utilizes onboard UART for greater communication accuracy
Baud rates of 9600
Greater processing speed at 10MHz
Incoming buffer stores up to 80 characters
Backlight transistor can handle up to 1A
Pulse width modulation of backlight allows direct control of backlight brightness and current consumption
All surface mount design allows a backpack that is half the size of the original
Faster boot-up time
Boot-up display can be turned on/off via firmware
= Application Ideas =
= Cautions =
= Schematic =
*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/SerialUART_LCD_Backpack.pdf Schematics]
= Specification =
Item	Min	Typical	Max	Unit
Voltage	4.3	4.6	3.3	V
Current	53	84	128	mA
Dimension	80.0×36.0×22.7	mm
Net Weight	39	g
= Pin definition and Rating =
= Mechanic Dimensions =
= Usage =
== Hardware Installation ==
*Connect the 3.3V of Serial LCD to 3.3V on Arduino.
*Connect GND of Serial LCD to GND of Arduino.
*Connect RX of Serial LCD to digital 3 of Arduino.
[[File:LED 3.3V B.jpg| 640px]]
[[File:LED 3.3V C.jpg| 640px]]
= Programming =
The following is the sample code assuming that the RX of serial LCD is connected to digital 2 of Arduino. The following code has been tested on Arduino IDE 1.0.1.
#include <SoftwareSerial.h>
 
#define txPin 2
 
SoftwareSerial LCD = SoftwareSerial(0, txPin);
// since the LCD does not send data back to the Arduino, we should only define the txPin
const int LCDdelay=10;  // conservative, 2 actually works
 
// wbp: goto with row & column
void lcdPosition(int row, int col) {
  LCD.write(0xFE);   //command flag
  LCD.write((col + row*64 + 128));    //position 
  delay(LCDdelay);
}
void clearLCD(){
  LCD.write(0xFE);   //command flag
  LCD.write(0x01);   //clear command.
  delay(LCDdelay);
}
void backlightOn() {  //turns on the backlight
  LCD.write(0x7C);   //command flag for backlight stuff
  LCD.write(157);    //light level.
  delay(LCDdelay);
}
void backlightOff(){  //turns off the backlight
  LCD.write(0x7C);   //command flag for backlight stuff
  LCD.write(128);     //light level for off.
   delay(LCDdelay);
}
void serCommand(){   //a general function to call the command flag for issuing all other commands   
  LCD.write(0xFE);
}
 
void setup()
{
  pinMode(txPin, OUTPUT);
  LCD.begin(9600);
  backlightOn() ;
  clearLCD();
  lcdPosition(0,0);
  LCD.print("Hello world from LinkSprite!");
}
 
void loop()
{
}
= FAQ =
Please list your question here:
= Support =
If you have questions or other better design ideas, you can go to our [http://www.linksprite.com/forum/ forum] to discuss or creat a ticket for your issue at [http://www.linksprite.com/support/ linksprite support].
= Resources =
*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/30487c.pdf PIC16F88 Datasheet]
*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/HD44780.pdf HD44780 Datasheet]
*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/SerLCD_user_guide.pdf SerLCD User Guide]
*[http://learn.linksprite.com/arduino/shields/how-to-flash-serial-basic-16x2-character-lcd-black-on-green-5v-uart/ How to flash PIC16F88] 
= How to buy =
= See Also =
Other related products and resources.
= Licensing =
This documentation is licensed under the Creative Commons [https://creativecommons.org/licenses/by-sa/3.0/ Attribution-ShareAlike License 3.0] Source code and libraries are licensed under [http://www.gnu.org/licenses/gpl.html GPL/LGPL], see source code files for details.