This project demonstrates how to create a portable, battery-less thermometer that measures temperature and humidity using Sensirion's SHT40 sensor and NFC. Powered by your phone's USB-C port, it's easy to build with an Adafruit QT Py and perfect for checking ambient conditions on the go, from your home to the great outdoors. Experience the convenience of NFC – simply tap your phone to read the data.
Get started here.
