Combine Two Sketches

I have one sketch running on a mega used for counting pulses.
I have a second sketch for displaying on an LCD on another mega connected via serial.
I want to combine both sketches to tun on one mega.
I am new to programming and finding it very hard.
any help would be appreciated.

LCD.ino (1.73 KB)

Pulse_working_original.ino (900 Bytes)

Have a look at this merge demo.


  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 (
 example added 9 Jul 2009
 by Tom Igoe 
 modified 22 Nov 2010
 by Tom Igoe
 This example code is in the public domain.

// 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);
//Number of pulses, used to measure energy.
long pulseCount = 0;
//Used to measure power.
unsigned long pulseTime,lastTime;
//power and energy
double power, elapsedkWh;
//Number of pulses per wh - found or set on the meter.
int ppwh = 1; //1000 pulses/kwh = 1 pulse per wh
void setup()
{  Serial.begin(38400);
// KWH interrupt attached to IRQ 1  = pin3 
attachInterrupt(1, onPulse, FALLING);
    // set up the LCD's number of columns and rows: 
  lcd.begin(16, 2);
  // initialize the serial communications:


void loop()
  // when characters arrive over the serial port...
 lastTime = pulseTime; 
pulseTime = micros();
//Calculate power
power = (3600000000.0 / (pulseTime - lastTime))/ppwh;
//Find kwh elapsed
elapsedkWh = (1.0*pulseCount/(ppwh*1000)); //multiply by 1000 to pulses per wh to kwh convert wh to kwh
//Print the values. 
      lcd.write("  KW ");

the sketch you post is the one I am using they are in attachments. I looked at the combiner example. I still thinks its beyond me! Thanks all.

mmm, that is them combined, basically you add the include for the display, initialize it in the setup and then instead of sending the text over the serial port you send it to the display.