IoT Thermostat v4.0.2

Custom made thermostat for building's heating control with capability of timing heat-phases when energy price is discounted. It also has capability of different custom-interfaces (e.g.: show values on smart-mirror, etc.)

Modules:

• Thermostat

  • Measures inside temperature and humidity
  • Can use external temperature resource(s): Any device (HomeAssistant or anything else) can provide temperature value for this thermostat over MQTT Due to lack of this "external" data it reverts to using own DTH sensor.
  • get price information from "PhaseChecker"-device
    • .. over MQTT
    • .. by using GET requests to "PhaseChecker"-device
  • Provide command to the "actuator" module (receiver) to control building's heater device
  • Shows informations on OLED display:
    • Current temperature
    • Set temperature
    • Humidity value (rh)
    • Current "price"
    • Current decision (heating or not)

• Actuator / Receiver

  • Can get action from thermostat module ("Custom mode")
  • Can get action from factory thermostat receiver ("factory mode")
  • Observe control state of factory thermostat receiver

• PhaseChecker device:

  • Provide current status of "low-priced" energy source (currently available or not)

Required libraries:

• ESP8266 Community v2.7.3 (newer not applicable with currently used device(s))

Hardware requirement:

• Thermostat

  • NodeMCU board (or WeMos D1 mini also applicable)
  • DHT11 temperature and humidity sensor (DHT22 also applicable)
  • Arduino Nano (other arduino version can also be used)
  • OLED display (0.96" with SPI interface)

• Actuator

  • WeMos D1 mini board (NodeMCU also applicable)
  • Relay module (1ch, low level triggered version)
  • NPN transistor and resistors for control relay-module