This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno clones, has within it a watchdog timer that clicks over at a rate of ...

The attached shield—dubbed the “Ambient Board”—is a buffet of sensors: temperature, humidity, CO, NO2, light intensity, and a microphone for reading sound levels.

The TP-Link Tapo T310 Smart Temperature and Humidity Sensor is the top temperature and humidity sensor thanks to its excellent value and easy control in the Tapo app.