SmartThermostat

SmartThermostat is a service that allows you to control your home thermostat remotely through your local network. It consists of a server application that controls all communications between the remote devices and a client Web APP that interacts with the server. The Web APP itself is also served by the server but could be also separated.

Schematics

Thermostat Controller Diagram

The thermostat controller is used to turn the thermostat on and off. The thermostat can be controlled either by connecting the thermostat to a physical GPIO pin on a Raspberry Pi server or remotely through an ESP8266 module. Below are the schematics for both types of connections.

Physical thermostat connection through Raspberry Pi GPIO pins: This is the default setup. The default sensor and thermostat setup can be changed from the consts.py script. The oled module is commented out in the code by default and it's optional.

Remote thermostat connection through ESP8266 module:

WiFi Sensors Diagram

Additional WiFi sensors can be added to SmartThermostat. They are making use of an ESP8266 module and a BME280 sensor connected to it through SPI. There is also support for a physical DHT22 temperature sensor connected to a Raspberry Pi server that runs the SmartThermostat.

Installation

• Prepare your setup based on the diagrams above and the sketches in the devices folder.
• Clone the repo and execute the scripts below:
  • ./prerequisites.sh: to install all needed prerequisites
  • ./build.sh: to build the client webapp and link it to the server
  • ./server/smartThermostat.py: to start the Smart Thermostat server (it also serves the client webapp)
  • ./install_as_servicev.sh: run this script optionally to install smartThermostat as a service that starts automatically on boot
• The Web APP will run on port 6969 by default. You can change the port in the data.json file, after the initial execution of ./server/smartThermostat.py script.
• Remote devices (sensors or thermostat controllers) can be added through the Web APP or the data.json file after the initial execution of the server.

To Do List

• ✅ Option to schedule required temperatures
• ✅ Option for remote sensors
• ✅ Option for remote thermostat control [to be tested and refined]
• ⬜️ Remote thermostat settings on the Web APP
• ⬜️ Option for cooling control
• ⬜️ Option to handle multiple thermostat controllers

Disclaimer

Make sure you know what you do before you do anything, the author accepts no responsibility for any damage to your equipment.