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Unofficial Nest Learning Thermostat API
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README.md

Unofficial Nest Learning Thermostat API

This is a PHP class that will allow you to monitor and control your Nest Learning Thermostat, and Nest Protect.

Note that since I started this, Nest have started an official Developer program. You might be better served using the official APIs, versus this PHP class here in which you need to store your credentials in plain text, and which use the non-supported APIs used by the mobile & web apps.
i.e. if you're building a serious commercial application, go sign-up into Nest's Developer program. If you just want to build something for yourself, then you're probably fine with this PHP class here.

Features

  • Caching so that it doesn't re-login when it doesn't need to. i.e. faster operations.
  • Getters:
    • Current & target temperatures, humidity
    • Time to target temperature
    • Target temperature mode, fan mode
    • AC, heat, and fan status: on or off
    • Manual and automatic away mode
    • Location information
    • Network information (local & WAN IPs, MAC address, online status)
    • Currently active schedule (by day)
    • Next scheduled event
    • Last 10 days energy report
    • Device name, devices list
    • Battery level (voltage)
    • Nest Protect device information
  • Setters:
    • Target temperatures (single, or range)
    • Target temperature mode: cool, heat, range
    • Fan mode: auto, on, minutes per hour
    • Fan: every day schedule (start & stop time)
    • Fan: on with timer (stops after X minutes/hours)
    • Away mode: on, off, min/max temperatures, Auto-Away
    • Dual fuel: breakpoint (use alt. fuel when outdoor temp is below X), always alt, always primary
    • Humidity (on, off, %)
    • Turn off HVAC

Usage

You can just download nest.class.php and require/include it, or use composer: require "gboudreau/nest-api": "dev-master".

See examples.php for details, but here's a Quick Start.

<?php

require_once('nest.class.php');

// Your Nest username and password.
define('USERNAME', 'you@gmail.com');
define('PASSWORD', 'Something other than 1234 right?');

$nest = new Nest();

// Get the device information:
$infos = $nest->getDeviceInfo();
print_r($infos);

// Print the current temperature
printf("Current temperature: %.02f degrees %s\n", $infos->current_state->temperature, $infos->scale);

// Cool to 23
$nest->setTargetTemperatureMode(TARGET_TEMP_MODE_COOL, 23.0);

// Set Away mode
$nest->setAway(TRUE);

// Turn off Away mode
$nest->setAway(FALSE);

Example output for getDeviceInfo():

{
  "current_state": {
    "mode": "range",
    "temperature": 24.09999,
    "humidity": 42,
    "ac": false,
    "heat": false,
    "fan": true,
    "auto_away": 0,
    "manual_away": false,
    "leaf": false,
    "battery_level": 3.948
  },
  "target": {
    "mode": "range",
    "temperature": [
      23,
      26
    ],
    "time_to_target": 0
  },
  "serial_number": "01AB02BA117210S5",
  "scale": "C",
  "location": "1061f350-a2f1-111e-b9eb-123e8b139117",
  "network": {
    "online": true,
    "last_connection": "2012-09-30 21:26:25",
    "wan_ip": "173.246.19.71",
    "local_ip": "192.168.1.201",
    "mac_address": "18b430046194"
  }
}

Troubleshooting

If you have any issues, try adding this at the top of your PHP script, to ask PHP to echo all errors and warnings.

error_reporting(E_ALL);

Acknowledgements

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