It’s all thanks to its low-power design ... an ESP32 microcontroller, combined with a BMP180 sensor for measuring barometric pressure, and a DHT22 sensor for measuring temperature and humidity.

The remote sensor node electronics are a little bit more involved. [Harald]’s design uses a simple custom PCB which is basically ... sensor that provides temperature, humidity and atmospheric ...

1. The HDC302x family of humidity and temperature sensors includes the sensor itself, digitization, calibration, and an I2C interface, along with other functions and features. The design ensures ...