Control a window AC unit with a Spark Core.

Readme.md

_

check_temp.php

<?php
$ch = curl_init("https://api.spark.io/v1/devices/DEVICE_ID/result?access_token=DEVICE_TOKEN");
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch,  CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);       
curl_close($ch);
$return = json_decode($output, true);
// Add error handing here {"error": "Timed out."}
$data = json_decode($return["result"], true);
$con=mysqli_connect("HOST","USER","PASS","DB_NAME");

// Check connection
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}else {
mysqli_query($con,"INSERT INTO spark_temp (humidity, temperature, ac_mode, day_mode) 
VALUES ('".$data["data1"]."', '".$data["data2"]."', '".$data["data3"]."', '".$data["data4"]."')");
}

mysqli_close($con);
?>

Cron

*/10 * * * * /usr/bin/php /home/chris/cron/check_temp.php

temperature.ino

#include "IRremote.h"
#include "HTU21D.h"

IRsend irsend(D3); // hardwired to pin 3; use a transistor to drive the IR LED for maximal range
unsigned int rawCodes[] = {8300, 4200, 450, 1650, 450, 1650, 450, 1650, 450, 600, 450, 1650, 450, 600, 450, 1650, 450, 1650, 450, 4250, 450, 1650, 450, 1650, 450, 600, 450, 1650, 450, 600, 450, 600, 450, 650, 450, 600, 500};

int toggleAc(String args);
HTU21D myHumidity;
char resultstr[128];

bool acRunning = false;
int acValue = 0;
int dayMode = 0;
int override = 0;
float lastTemp = 0;
float maxTemp = 76;
float minTemp = 72.5;

void setup()
{
  myHumidity.begin();
  Time.zone(-5);
  // expose your char buffer to the Cloud API
  Spark.variable("result", &resultstr, STRING);
  Spark.function("toggleAc", toggleAc);
}

void setHome()
{
    dayMode = 0;
    maxTemp = 77.5;
    minTemp = 74;
}

void setAway()
{
    dayMode = 1;
    maxTemp = 82;
    minTemp = 75;
}

void setNight()
{
    dayMode = 2;
    maxTemp = 75.5;
    minTemp = 73;
}

void loop()
{
    if(Time.weekday() < 7 && Time.weekday() > 1) {
        if(Time.hour() >= 16 && Time.hour() < 22) {
            setHome();
        } else if (Time.hour() >=22 || Time.hour() < 8) {
            setNight();
        } else {
            setAway();
        }
    } else {
        if (Time.hour() >=22 || Time.hour() < 8) {
            setNight();
        } else {
            setAway();
        }  
    } 

    float humd = myHumidity.readHumidity();
    float temp = myHumidity.readTemperature() * 9 / 5 + 32;
  
    if(!acRunning && temp > maxTemp) {
        toggleAc("normal");
        lastTemp = temp;
    }
  
    if(acRunning && temp < minTemp) {
        toggleAc("normal");
        lastTemp = temp;
    }
  
    sprintf(resultstr, "{\"data1\":%f,\"data2\":%f,\"data3\":%i,\"data4\":%d}", humd, temp, acValue, dayMode);
    delay(30000); // Delay 30 seconds
}

int toggleAc(String args)
{
    if(args == "normal") {
        acRunning = !acRunning; 
        if(acRunning) {
            acValue = 1;
        } else {
            acValue = 0;
        }
    }
    irsend.sendRaw(rawCodes, 37, 38);    
}