Today I'm going to go outside my usual set of topics and talk about a fun side project that might broaden your horizons. Or expose my ignorance. A couple of years ago I set out to build a gear warning system for my glider using an Arduino-type system, and I'm going to talk about how it works and what that code looks like.

A mere fourteen days have passed since the last time, but here is yet another Friday Q&A. Luis de la Rosa contributed this week's topic: proper generation and use of random numbers.