Go Down

Topic: Put serial input string on an LCD screen (Read 744 times) previous topic - next topic


Jan 26, 2013, 06:39 pm Last Edit: Jan 26, 2013, 06:45 pm by lawm Reason: 1
This is my current program:
Code: [Select]
#include <LiquidCrystal.h>
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
char prevValue;

void setup() {
   lcd.begin(16, 2);

void loop() {
 if (Serial.available() > 0) {
   char value = Serial.read();
   if (prevValue != value){
     prevValue = value;

When you type in any char in the serial monitor, it will print it on my LCD screen.
Now I want to make it read an entire string.  Also, the part of my program that listens for a new char to change the screen will not work if the inputted char is the same as the previous one. Any suggestions/help?


What line ending, if any, do you have selected in the serial monitor ?

Do you want the user to type a string, press Return and for the string to appear on the LCD or is each character entered individually followed by Return ? 
Please do not send me PMs asking for help.  Post in the forum then everyone will benefit from seeing the questions and answers.

Go Up