The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

The eBay hacker favorite, the so-called DHT22 module, doesn’t fare all that ... microscope to figure out what’s going on. The other sensors were fine, with the HTU21D and SHT71 being standouts ...

The build is based around an ESP32 microcontroller, combined with a BMP180 sensor for measuring barometric pressure, and a DHT22 sensor for measuring temperature and humidity. By taking these ...