Read more: Battery Brands Ranked From Worst To Best The Arduino Uno Rev3 is the third revision ... The VRTC pin supports anything between 1.6V and 3.3V, so using two AA batteries would be fine.

To replicate Krejci’s design, you need an Arduino UNO Rev3 board, an AMG8833 infrared ... via I2C and features an adjustable interrupt pin. This can be set to activate when the temperature ...

The Arduino Uno Rev3 is the third revision of the ... or disconnected from the main supply. The VRTC pin supports anything between 1.6V and 3.3V, so using two AA batteries would be fine.