Find the serial number for your Chromebook. You can find the serial number on a sticker at the bottom of your Chromebook, or on your Chromebook's box. Find the serial number for your Nest Thermostat. On the box, look for S/N and find the number that follows it. You can also find it in the thermostat technical menu. Nest may share certain information (including, but not limited to, your name, email address, service address, Piedmont Electric account number, Nest Learning Thermostat serial number, activation date, Nest account status, runtime data, set-points, and related details) with NCEMC to verify that you are eligible to participate in the Rush Hour Rewards Program and to evaluate the comprehensive energy impact of the Nest Learning Thermostat. The Nest Thermostat App works in tandem with the Thermostat. The app sends the thermostat information you want it to know about the settings that best match your lifestyle, making heating and cooling more energy efficient.

I want to build a Raspberry Pi (RPi) based device similar to the Nest Thermostat, except that I want to control light switches. I know I could easily code up a Node.js script on the RPi and then just hook it up to my local router and control it with a PC hooked up to the same router.

But, I want to make it more like a Nest. I want to be able to control 20 (or more) RPis across different subnets through a cloud provider like Heroku.

The Nest thermostat does not require the user to open a port on their router so that the Nest server can communicate with it.

How is Nest able to control customer's thermostats over the web without enabling port forwarding in the customer's router?

sizzlesizzle

3 Answers

Blog post Nest Thermostat API using Node JS and Nest API Update discusses the API between the thermostat and the nest lab servers. In particular:

The API uses mostly JSON formatted data POSTed to their web servers.

So there is your answer. By periodically POSTing data to the nest web servers using HTTPS, Nest is able to avoid having the user open any ports on their router.

Problems With Nest Thermostats

For what it's worth, the unofficial API (in node.js!) from the blog post is available on github: Unofficial Nest API on Node.

Justin EthierJustin Ethier

I think the thermostat periodically posts a request with the thermostat serial number to nest. It may have timeouts in the http headers set to infinity or more likely, the nest server simply closes the connection after a minute or so if no command for that device has come in. Whenever nest closes the connection the thermostat opens a new one. When a command request comes in with serial number, its a quick lookup to find the thread currently connected to that thermostat. The command is sent in the payload of the current thermostat request, which is executed, the connection is closed, and the thermostat opens a new request to nest .

Mike SchultzMike Schultz

Take a look at eventSource in the HTML 5 standard. It does everything that is required.

Serial Number Lookup

user2246134user2246134

Nest Thermostat Model And Serial Number

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3 Answers

Problems With Nest Thermostats

Serial Number Lookup

Nest Thermostat Model And Serial Number

Not the answer you're looking for? Browse other questions tagged node.jsherokuraspberry-pi or ask your own question.

Items in search results

Nest 2nd Generation Learning Thermostat T200477W

Nest 2nd Generation Learning Thermostat T200477

Nest Learning Thermostat (2nd Generation) - Stainless Steel (T200477W)

Battery for NEST Learning Thermostat T200377, T200477, T200577, T200777, T200877

Nest Learning Home Programmable Thermostat Gen 3 T3007ES, Works with Amazon Alex

Nest Thermostat E Smart Wi-Fi Programmable Thermostat, White T4001ES (Pro Model)

Nest Learning Thermostat, Nest X Yale With Connect W/ Nest Hello Video Doorbell

Nest Thermostat E Wi-Fi Smart Thermostat - White (T4000EF)

Nest Learning Thermostat, Nest X Yale With Connect W/ Nest Hello Video Doorbell

Nest Learning Home/Office Heating/Cooling Smart Thermostat with WiFi (Open Box)

Nest Learning 2nd Generation Heating Cooling Smart Thermostat, Stainless Steel

Nest Learning Stainless Steel Programmable Thermostat Model # T3007ES NIB

New Sealed Nest Learning Thermostat 3rd Generation Stainless Steel Latest model

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Thermostat E Smart Wi-Fi Programmable Thermostat, White w/ Display Base - Nest

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New listing Nest Thermostat E ((White)

Nest Thermostat Serial Number