With this tool, no one will dare to annoy you by buzzing your doorbell for long…or no one will ever visit you again!
Process
Source Code for the Receiver
#include <NewSoftSerial.h>
NewSoftSerial mySerial(2,3);
/*
doorbell basic DINGY!!
by Rob Faludi faluudi.com
*/
#define VERSION "1.00a0"
boolean dumpWater = false;
int water = 7;
long previousMillis = 0;
long interval = 5000;
int BUTTON = 5;
int counter=0;
void setup(){
pinMode(water, OUTPUT);
pinMode(BUTTON, INPUT);
pinMode(13,OUTPUT);
mySerial.begin(9600);
}
void loop(){
//look for a capital D over the serial port and ring the bell if found
unsigned long currentMillis = millis();
if(currentMillis - previousMillis > interval&&dumpWater==true) {
dumpWater=false;
digitalWrite(water, LOW);
digitalWrite(13, LOW);
}
if(counter>=300){
previousMillis = currentMillis;
dumpWater=true;
digitalWrite(water, HIGH);
digitalWrite(13, HIGH);
counter=0;
}
if (mySerial.available() > 0){
if (mySerial.read() == 'W') {
//ring bell briefly
previousMillis = currentMillis;
dumpWater=true;
digitalWrite(water, HIGH);
digitalWrite(13, HIGH);
delay(10);
}
}
if (digitalRead(BUTTON) == HIGH){
mySerial.print('R');
counter++;
//digitalWrite(13,HIGH);
delay(10); //prevents overwhelming the serial port
}
}
Source Code for the Sender Button
#include <NewSoftSerial.h>
/*
doorbell basic BUTTON!!
by Rob Faludi faluudi.com
*/
NewSoftSerial mySerial(2,3);
#define VERSION "1.00a0"
boolean dumpWater=false;
int BUTTON = 5;
int resetButton = 8;
int bell = 7;
void setup(){
pinMode(BUTTON, INPUT);
pinMode(resetButton, INPUT);
pinMode(bell, OUTPUT);
pinMode(13,OUTPUT);
mySerial.begin(9600);
}
void loop(){
//send a capital D over the serial port if the button is pressed
if(dumpWater==false){
digitalWrite(13,HIGH);
}else{
digitalWrite(13,LOW);
}
if(digitalRead(resetButton)==HIGH && dumpWater==true){
dumpWater=false;
}
if (digitalRead(BUTTON) == HIGH){
if(dumpWater==false){
mySerial.print('W');
//digitalWrite(13,HIGH);
delay(10); //prevents overwhelming the serial port
dumpWater=true;
}
}
if (mySerial.available() > 0&&dumpWater==false){
if (mySerial.read() == 'R') {
//ring bell briefly
//previousMillis = currentMillis;
//dumpWater=true;
digitalWrite(bell, HIGH);
//digitalWrite(13, HIGH);
delay(10);
digitalWrite(bell, LOW);
}
}
}
by Leif, Chris, Oylum
Final paper is available here
scottpeterman are discussing. 
lpercifield is discussing. 
It is hard to find familiar people within this issue, you be understood as you know exactly what you are referring to! Thanks a lot