how to use minipro to bridge paralell to serial LCD

Other Hardware Displays
1

Hello all,

I am new to Arduino world.. :~

I have extra Arduino mini pro and want to use it as a bridge to make paralell LCD to serial LCD.

idea is., and material below.

  1. one paralell LCD : PVC160203P, used as LCD screen
  2. one arduino-A minipro: connect to paralell LCD ,HW connect follow the arudino example. also connect to arduino-B with Vcc,GND and RX, arduino-A to bridge paralell LCD to serial LCD.
  3. one arduino-B minipro: sending the serial signal and connect to arduino-A , connect VCC,GND and RX.

I want to make 1 and 2 as a serial LCD function..
do you know any good pde code which already make this work can be loaded in Arduino-A ?

thanks for the help :slight_smile:

2

SerialDisplay in the IDE examples ?

3

pluggy:
SerialDisplay in the IDE examples ?

Well, sorry that I am new with arduino. do you mean IDE is the ".pde" code ?

I found some code but seems still some problem. when using arduino 0021 "serial monitor" to give text., it works fine but when arduino-A RX connected to Arduino-B RX, there is offset in LCD screen for special character., looks like some problem when start up ?

Actually just want use arduino minipro to make the function same as serial LCD
such as the LCD-09394.
http://www.sparkfun.com/products/9394

below is the code found . just modified the pin definition and change LCD from 20x4 to 16x2. when connect arduino-A to arduino-B with RX. it works but there is offset that make reading problem... :~

for example: the character should show in row 1 position 15 but actually show in row2 position 02..

Thanks for the help in advance..

/*

RSS Checher code used in Liqard Project

Ahmet YILDIRIM

www.mclightning.com

New ideas comes up as fast as lightning :P

*/
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup(){
lcd.begin(16, 2); //16x2 LCD//
Serial.begin(9600);
}
int n=0;
void loop()
{
if (Serial.available()) {
delay(100);
lcd.clear();
n=0;
while (Serial.available() > 0) {
lcd.setCursor(n%16,(n-n%16)/16); // change from "20" to "16"//
lcd.write(Serial.read());
n++;
}
}
}

4

IDE is the Arduino program. There is a sketch called SerialDisplay in the built in examples (liquidcrystal folder), it looks a lot like this :

/*
  LiquidCrystal Library - Serial Input
 
 Demonstrates the use a 16x2 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 displays text sent over the serial port 
 (e.g. from the Serial Monitor) on an attached 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 resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)
 
 Library originally added 18 Apr 2008
 by David A. Mellis
 library modified 5 Jul 2009
 by Limor Fried (http://www.ladyada.net)
 example added 9 Jul 2009
 by Tom Igoe 
 modified 22 Nov 2010
 by Tom Igoe
 
 This example code is in the public domain.
 
 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup(){
    // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // initialize the serial communications:
  Serial.begin(9600);
}

void loop()
{
  // when characters arrive over the serial port...
  if (Serial.available()) {
    // wait a bit for the entire message to arrive
    delay(100);
    // clear the screen
    lcd.clear();
    // read all the available characters
    while (Serial.available() > 0) {
      // display each character to the LCD
      lcd.write(Serial.read());
    }
  }
}