M5stack-Core2-MQTT-Thermostat

Smart thermostat, built for M5Stack Core2.

all thermostat logic is built into this Python script and runs on Core2
thermostat supports auto, manual, fan, heat, cool modes
minimum cycle duration can be set (THERMO_MIN_CYCLE)
swing mode is enabled and can be customized (THERMO_COLD_TOLERANCE and THERMO_HEAT_TOLERANCE)

Relies on separate config.py file to store secrets (WiFI and MQTT connection details)
Gets actual temperature through ENVII sensor, connected to the Core2. But you could easily set up another external temperature sensor and communicate values to the Core2 through MQTT
Uses MQTT to communicate with relays that turn on/off furnace, fan, and AC. You need to configure the right topics and payloads to establish that communication (variables starting with RELAY_)
Graphics files for heat/cool/fan need to be stored in the /res directory

Integrates with Home Assistant through MQTT (you need MQTT enabled on the HA side)
Supports MQTT auto-discovery. No configuration needed on the HA side.
Will create 'Core2 Thermostat' device with following entities:
- 3 sensors for temperature, humidity, and pressure (if using the ENVII)
- 1 thermostat entity
- 2 switch entities (for manual furnace/ac control)
The thermostat entity allows you to control target temperature and thermostat mode through HA. Any changes will be reflected on the Core2.
Manual mode is not supported by the HA thermostat entity. State of the devices (heating/cooling/fan on-off will be accurately reflected in home assistant's thermostat entity, but the thermostat mode will be 'off'.You can use the HA switch entities to manually change the state of the devices from HA. When you do so, the thermostat will automatically switch to manual mode (or 'off' in the HA thermostat entity).
You can't yet manually turn on/off a fan from HA.

Upon start the thermostat will be OFF. Tapping the OFF label will run the thermostat through the various modes: OFF - AUTO - MAN - HEAT - COOL - FAN
When in manual mode, use the A/B/C buttons to turn on/off heat pump, AC, Fan. Only 1 device can be on at a given time.
When min cycle duration requirement isn't met, the Core2 display will blink until it is able to implement the change
Blinking is not supported on the Lovelace thermostat card. The HA dashboard will not change until the min cycle duration requirement is met.
Core2 can display temperature in Celsius or Fahrenheit (set DISP_TEMPERATURE accordingly). Default is Fahrenheit. Home Assistant will display temperature depending on your HA preferences (metric vs imperial)