ESP8266 Climate Sensor

This project provides an ESP8266 based climate sensor with the following features:

• MQTT status reporting / remote control
• Home Assistant integration with device autodiscovery
• Multi-Sensor display indoor/outdoor with Weather forecast
• Battery powered with deep sleep support

Supported hardware

• ESP8266 Lolin D1 Mini with Deep-Sleep
• BME280 climate sensor (i2c-Mode)
• 200x200 WeAct EPD/eInk display (4-Wire SPI)

Display & HA integration

Weather data is presented the following way using the eInk-Display:

The following sensors are automatically discovered by the HA MQTT auto discovery:

The device collects the following data points:

• Absolute humidity (calculated)
• Relative humidity
• Current battery voltage
• Air pressure
• Temperature
• Overall cycle time of the sensor for one measurement
• Wifi quality

Schematics & Prototype

The KiCad 8.0 project is located in the kicad folder.

Here is the wiring schematic drawing:

Manual

TBD