This is a small project to add IoT sensor data to Home Assistant utilising cheap ESP8266 modules

Software side is now more easily covered by ESP Home

• Deep sleep so the board does not heat up and effect sensor readings.
• MQTT to send data.
• Based off wemos dev boards.
• Cases for 3d printing based on this template by Andreas Spiess.
• PlatformIO for build

• Connect the two boards together using headers
• Connect RST to D0 this will allow the board to wake up from deep sleep
• Print case (you may need to modify the stl if your usb cable has a very thick plug)
• Edit code to add ssid mqtt server name etc
• Setup config in HA (see below)

For a sensor named ESP_SENSOR_11 add the following to your configuration.yaml

sensor:
- name: ESP_SENSOR_11 temperature
  platform: mqtt
  device_class: temperature
  state_topic: ESP_SENSOR_11/temperature
  unit_of_measurement: °C
- name: ESP_SENSOR_11 humidity
  platform: mqtt
  device_class: humidity
  state_topic: ESP_SENSOR_11/humidity
  unit_of_measurement: '%'