Messager

/*
  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
 * LCD VSS pin to ground
 * LCD VCC pin to 5V
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)

 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);
  // Print a message to the LCD.
  Serial.begin(9600);
  pinMode(8, INPUT);
  pinMode(9, INPUT);

}

char* mes;
char* newmes;

void loop() {
  lcd.clear();
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  float ono = analogRead(5);
  // print the number of seconds since reset:
  lcd.print(mes);
  int non = map(ono, 0, 1023, 90, 65);
  lcd.setCursor(0,0);
  char nunu=(char)non;
  lcd.print(nunu);
  //lcd.print(nunu);
  delay(200);
  if(digitalRead(8)==HIGH){
    newmes = new char[sizeof(mes)+1];
    for(int i=0; i<sizeof(mes); i++){
      newmes[i]=mes[i];
    }
    newmes[sizeof(newmes)]=nunu;
    mes=newmes;
  }
}