This document contains the code for a sigh collector receiver module. It defines variables to control an LED, pump, and reading value. It initializes serial communication and sets the pumpRunning and stepCounter variables. The main loop handles serial data, checks if the pump should start or stop based on the stepCounter and time thresholds, and debounces the button input. Additional functions start and stop the pump by controlling the LED and pump pins.

1. /*
Michael Kontopoulos
2009
Sigh Collector (Reciever Module)
*/
#include <NewSoftSerial.h>
NewSoftSerial mySerial = NewSoftSerial(2,3); //instead of 1,2 (rx,tx)
int ledPin = 13;
int pump = 9;
int reading;
int previous = LOW;
long time = 0; // the last time the output pin was toggled
long debounce = 1000; // the debounce time, increase if the output
flickers
boolean pumpRunning;
int stepCounter;
long pumpStartTime=0;
long thresh;
void setup()
{
pinMode(pump, OUTPUT);
pumpRunning = false;
stepCounter = 0;
thresh = 2000;
Serial.begin(9600);
mySerial.begin(9600);
}
void loop()
{
serialHandler();
char val = (char)mySerial.read();
if(val == '8') //red button
{
reading = HIGH;
Serial.print("sigh! stationary unitt");
//Serial.print(reading);
}
else{
reading = LOW;
}
//Pump check
if(!pumpRunning && stepCounter > 0)
{
startPump();
stepCounter--;
}
long diff = millis() - pumpStartTime;
if (pumpRunning && diff > thresh)

2. {
stopPump();
}
//Register button pressing
//Includes Debouncing
if (reading == HIGH && previous == LOW && millis() - time > debounce) {
stepCounter++;
time = millis();
}
previous = reading;
} // end main
void startPump()
{
digitalWrite(ledPin, HIGH);
digitalWrite(pump, HIGH);
pumpRunning = true;
pumpStartTime = millis();
}
void stopPump()
{
digitalWrite(ledPin, LOW);
digitalWrite(pump, LOW);
pumpRunning = false;
}
void serialHandler()
{
if (mySerial.available()) {
Serial.print((char)mySerial.read());
}
if (Serial.available()) {
mySerial.print((char)Serial.read());
}
delay(100);
}