Heat pump control with buttons

Other Hardware Home Automation
7

I got to work with this code

#include <Arduino.h>
#include <HeatpumpIR.h> // GitHub - ToniA/arduino-heatpumpir: An Arduino library to control split-unit heatpumps over Infrared
#include <Button.h> // Arduino Playground - Button Library

/*

This is a project I did for my my friend's summer cottage (he was previously using the MideaRelayControl sketch).
He has an alarm system with some extra relays which can be controlled via GSM SMS messages. With two relays
we can have four heatpump states:

  • relay 1 OFF and relay 2 in any state: heatpump OFF
  • relay 1 ON and relay 2 OFF: heatpump ON, normal heating state
  • relay 1 ON and relay 2 ON: heatpump ON, maintenance heating (FP mode on Midea's remote)

The IR led is driven by a transistor amplifier. I used 2 ohms as the resistor. I might sound
very small, but also the led operates on very short bursts. For example Panasonic uses 2 ohm
resistor for the IR led on its remotes.
*/

#define IR_HEADER_MARK 3500
#define IR_HEADER_SPACE 1800
#define IR_BIT_MARK 420
#define IR_ONE_SPACE 1350
#define IR_ZERO_SPACE 470
#define IR_PAUSE_SPACE 10000

// Heatpump states
const byte heatpumpOff = 0;
const byte heatpumpNormal = 1;
const byte heatpumpMaintenance = 2;

Button relay1 = Button(7, INPUT_PULLUP); // Heatpump ON 10
Button relay2 = Button(8, INPUT_PULLUP); // Heatpump ON 18
Button relay3 = Button(10, INPUT_PULLUP); // Heatpump ON 20
Button relay4 = Button(11, INPUT_PULLUP); // Heatpump ON 22
Button relay5 = Button(12, INPUT_PULLUP); // Heatpump OFF

IRSenderPWM irSender(9); // IR led on Duemilanove digital pin 9, using Arduino PWM

byte heatpumpState = heatpumpOff;

void sendRaw(char *symbols)
{
irSender.space(0);
irSender.setFrequency(38);

while (char symbol = *symbols++)
{
switch (symbol)
{
case '1':
irSender.space(IR_ONE_SPACE);
irSender.mark(IR_BIT_MARK);
break;
case '0':
irSender.space(IR_ZERO_SPACE);
irSender.mark(IR_BIT_MARK);
break;
case 'W':
irSender.space(IR_PAUSE_SPACE);
break;
case 'H':
irSender.mark(IR_HEADER_MARK);
break;
case 'h':
irSender.space(IR_HEADER_SPACE);
irSender.mark(IR_BIT_MARK);
break;
}
}

irSender.space(0);
}

void setup(){
Serial.begin(9600);
delay(500);
Serial.println(F("Starting..."));
}

void loop(){

if (relay1.isPressed()) {
// Heat 10

  Serial.println(F("* Sending normal heat 10"));
  sendRaw("Hh0100000000000100000001110010000000000000000000000000000001100000WHh01000000000001000000011100100000000000001001001000101000000000011000111000000000000000000111000000000111000000000000000010010001000000000000000011010011");

}
if (relay2.isPressed()) {
// Heat 18

  Serial.println(F("* Sending normal heat 18"));
  sendRaw("Hh0100000000000100000001110010000000000000000000000000000001100000WHh01000000000001000000011100100000000000001001001000100100000000011000010100000000000000000111000000000111000000000000000010010001000000000000000011010000");

}
if (relay3.isPressed()) {
// Heat 20

  Serial.println(F("* Sending normal heat 20"));
  sendRaw("Hh0100000000000100000001110010000000000000000000000000000001100000WHh01000000000001000000011100100000000000001001001000010100000000011000010101100000000000000111000000000111000000000000000010010001000000000000000010101000");

}
if (relay4.isPressed()) {
// Heat 22

  Serial.println(F("* Sending normal heat 22"));
  sendRaw("Hh0100000000000100000001110010000000000000000000000000000001100000WHh01000000000001000000011100100000000000001001001000110100000000011000010101100000000000000111000000000111000000000000000010010001000000000000000010011000");

}
if (relay5.isPressed()) {
// Heat OFF

  Serial.println(F("* Sending normal heat OFF"));
  sendRaw("Hh0100000000000100000001110010000000000000000000000000000001100000WHh01000000000001000000011100100000000000000001001000010100000000011000010100000000000000000111000000000111000000000000000010010001000000000000000001110000");


}

delay(500); // 0.5 seconds delay
}