We build on our previous LoRa IoT weather sensor to run for a year on 2x AAA batteries. We'll look at the AVR ATmega328p datasheet to determine which registers we need to use to put the microcontroller to sleep, and we'll calculate how long we need to sleep before sampling the sensor again.

The TSH82 was designed to allow for rapid prototyping using OpAmps. This board will give you high performance and design flexibility.

This article will go over some basic tools and necessities to have on hand that will prepare you for most projects.