Raspberry Pi Smart Thermostat

This project uses Flask for the backend, Bootstrap for the frontend, and Chart.JS for the data visualizations.

Required Hardware

Electronics-Salon Relay Board
Lechacal RPICT3T1 Current and Temperature Sensor -- we are only using the temperature portion
Raspberry Pi -- I used a 3B+ but other versions will likely work too.

Assemble the hardware however you like. I used standoffs to stack the three components, but you could use a breadboard as well.
Connect the thermostat wires to the relays as follows:
1. Connect the R wire (either Rh or Rc) to the C terminal on relay 1
2. Connect all the C terminals on all three relays together
3. Connect the W wire to the NO terminal on relay 1 (this controls the heat)
4. Connect the G wire to the NO terminal on relay 2 (this controls the fan)
5. Connect the Y wire to the NO terminal on relay 3 (this controls the A/C)
Download and extract the source code to a folder of your choosing
Install virtualenv and virtualenvwrapper (skip to step 4 if you have these already).
```
pip3 install virtualenv virtualenvwrapper
```
You will also need to make some changes to your ~/.bashrc file for virtualenvwrapper to work properly, see here.
Create a virtual environment for the project and switch into it
```
mkvirtualenv smarttthermostat
workon smartthermostat
```
Install the Python dependencies
```
pip3 install -r requirements.txt
```
Open static/settings.json and set your initial preferred temperature setpoint and tolerance, and indicate whether your home has heating and/or A/C by typing true or false where appropriate. Save the file.
Launch the app
```
python3 main.py
```
Open the web interface to see your thermostat at work! By default, the web server runs on port 5000.