Difference between revisions of "Serial UART 16x2 LCD"

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(Introduction)
(Introduction)
 
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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.
 
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.
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 +
[[File:1114 LCD.jpg|600px]]
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[[File:1114 LCD-9.jpg|600px]]
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[[File:1114 LCD-10.jpg|600px]]
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[[File:1114 LCD-12.jpg|600px]]
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[[File:1114 LCD-15.jpg|600px]]
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[[File:1114 LCD-16.jpg|600px]]
  
 
== Features  ==
 
== Features  ==
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== Schematic  ==
 
== Schematic  ==
 +
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*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/SerialUART_LCD_Backpack.pdf Schematics]
  
 
== Specification  ==
 
== Specification  ==
  
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{| border="1" cellspacing="0" width="100%"
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|-
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! scope="col" style="width: 50%" align="center" | Item
 +
! scope="col" align="center" | Min
 +
! scope="col" align="center" | Typical
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! scope="col" align="center" | Max
 +
! scope="col" align="center" | Unit
 +
|-
 +
! scope="row" | Voltage
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| align="center" | 4.3
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| align="center" | 4.6
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| align="center" | 5.0
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| align="center" | V
 +
|-
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! scope="row" | Current
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| align="center" | 53
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| align="center" | 84
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| align="center" | 128
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| align="center" | mA
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|-
 +
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! scope="row" | Dimension
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| align="center" colspan="3" | 80.0×36.0×22.7
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| align="center" | mm
 +
|-
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! scope="row" | Net Weight
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| align="center" colspan="3" | 39
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| align="center" | g
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|}
  
 
== Pin definition and Rating  ==
 
== Pin definition and Rating  ==
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=== Hardware Installation  ===
 
=== Hardware Installation  ===
  
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*Connect the 5V of Serial LCD to 5V on Arduino.
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*Connect GND of Serial LCD to GND of Arduino.
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*Connect RX of Serial LCD to digital 3 of Arduino.
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[[File:SerLCD hardware 1.jpg | 500px]]
  
  
  
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[[File:SerLCD hardware 2.jpg | 500px]]
  
 
=== Programming  ===
 
=== Programming  ===
  
  
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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.
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<syntaxhighlight lang="c">
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#include <SoftwareSerial.h>
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#define txPin 2
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SoftwareSerial LCD = SoftwareSerial(0, txPin);
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// since the LCD does not send data back to the Arduino, we should only define the txPin
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const int LCDdelay=10;  // conservative, 2 actually works
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// wbp: goto with row & column
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void lcdPosition(int row, int col) {
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  LCD.write(0xFE);  //command flag
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  LCD.write((col + row*64 + 128));    //position
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  delay(LCDdelay);
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}
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void clearLCD(){
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  LCD.write(0xFE);  //command flag
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  LCD.write(0x01);  //clear command.
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  delay(LCDdelay);
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}
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void backlightOn() {  //turns on the backlight
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  LCD.write(0x7C);  //command flag for backlight stuff
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  LCD.write(157);    //light level.
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  delay(LCDdelay);
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}
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void backlightOff(){  //turns off the backlight
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  LCD.write(0x7C);  //command flag for backlight stuff
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  LCD.write(128);    //light level for off.
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  delay(LCDdelay);
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}
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void serCommand(){  //a general function to call the command flag for issuing all other commands 
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  LCD.write(0xFE);
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}
  
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void setup()
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{
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  pinMode(txPin, OUTPUT);
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  LCD.begin(9600);
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  backlightOn() ;
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  clearLCD();
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  lcdPosition(0,0);
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  LCD.print("Hello world from LinkSprite!");
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}
  
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void loop()
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{
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}
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</syntaxhighlight>
  
 
== FAQ  ==
 
== FAQ  ==
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== Resources  ==
 
== Resources  ==
  
 
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*[https://s3.amazonaws.com/linksprite/components_breakout/SerLCD/30487c.pdf  PIC16F88 Datasheet]
 
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*[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]
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*[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  ==
 
== How to buy  ==

Latest revision as of 01:50, 18 November 2016

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 5V 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.

1114 LCD.jpg

1114 LCD-9.jpg

1114 LCD-10.jpg

1114 LCD-12.jpg

1114 LCD-15.jpg

1114 LCD-16.jpg

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

Specification

Item Min Typical Max Unit
Voltage 4.3 4.6 5.0 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 5V of Serial LCD to 5V on Arduino.
  • Connect GND of Serial LCD to GND of Arduino.
  • Connect RX of Serial LCD to digital 3 of Arduino.

SerLCD hardware 1.jpg


SerLCD hardware 2.jpg

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.

<syntaxhighlight lang="c">


  1. include <SoftwareSerial.h>
  1. 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() { }

</syntaxhighlight>

FAQ

Please list your question here:

Support

If you have questions or other better design ideas, you can go to our forum to discuss or creat a ticket for your issue at linksprite support.

Resources

How to buy

See Also

Other related products and resources.

Licensing

This documentation is licensed under the Creative Commons Attribution-ShareAlike License 3.0 Source code and libraries are licensed under GPL/LGPL, see source code files for details.