I have been working, very sporadically but for quite a while, on an ESP8266-based room climate logger with an BME280 sensor.
This sensor measures temperature, humidity and atmospheric pressure.
My current setup uses a Wemos D1 mini plus a Wemos battery shield as well as Waveshare 1.5 inch e-paper display. The display is updated once per minute and the data is logged to ThingSpeak at the same rate.
