Temperature and humidity inside my charcuterie chamber. Parameters are controlled via a custom algorithm implemented in a RPi using Python.
DHT22 temperature & humidity sensor driven by a Raspberry Pi 2 running a Python script
CAS studio temperature and humidity earth + straw wall measurements
Measuring of CO2 concentration, relative humidity, temperature and atmospheric pressure
Using Chirp, a capacitive humidity sensing with ESP8266 for my potted plants. https://wemakethings.net/chirp/