LCD Keypad

HostChoice.net: LCD Keypad
Posted in: code | by HostChoice.net | 2017 Oct 08


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The original code was found on

but there were a lot of errors in the format.

After working out most of the bugs, this version is able to handle as many relays as there are digital i/o pins.

Note: I just thought of a marketable product based on this. A backup replacement for broken turn signal on vehicles. We need a turn left, turn right, stop, flash, alternate flash.

Thanks!

// code lcdkeypad
/*
digitalWrite(pinLED, HIGH);
*/

/****************************************
 This program will test sending text to the
 LCD panel from a Bluetooth device! 
 (Bluetooth Pager)

hope to include a message received beep.
 uses: stock market quotes,

*****************************************/

//Sample using LiquidCrystal library
#include <LiquidCrystal.h>
// LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
 LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
 #include <SoftwareSerial.h>
 SoftwareSerial mySerial(0,1);

// SoftwareSerial  mySerial(0,1);
// String inData;

void setup() {
  Serial.begin(9600);       
    lcd.begin(16, 2);
    lcd.print("Hello!");
    delay(3000);
    lcd.clear();
}
void loop() {
 int i=0;
  char commandbuffer[100];

if(Serial.available()){
     delay(100);
     while( Serial.available() && i< 99) {
        commandbuffer[i++] = Serial.read();
     }
     commandbuffer[i++]='\0';
  }

if(i>0) {

Serial.println((char*)commandbuffer);
     lcd.print((char*)commandbuffer);
     delay(5000);
     lcd.clear();
}
}

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