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 AVR-based serial enabled LCD (a.k.a. SerLCD) is a simple and cost effective solution for adding Liquid Crystal Displays (LCDs) into your project.

When creating projects that glow, nothing beats EL wire.

In this tutorial, we’ll show you how to send data from cheap WiFi nodes to a Raspberry Pi over an internal WiFi network.