Planning another Arduino build? If you’re just doing something simple like switching a relay or powering a LED, you might want to think about the Digispark. It’s a very small ATtiny-based Arduino ...

This article describes how I have set up a simple “door-sentry” at home. The door-open detector is designed to alert you to an unauthorized entry in a confined area. It uses a little ATtiny85 ...

Recently I was able to build a version of a tiny microcontroller-based LED strobe light for RC airplanes. The build is not very advanced, but it is almost a complete kit. Let’s start with the easy ...