Crow-aware adaptive elevator trim

In this post I describe an adaptive (continuously variable) trim system for crow brakes.

Instead of supplying a fixed offset, the elevator trim provides a variable trim according to the amount of crow. To adjust the trim at any particular crow setting, the pilot simply nudges the trim as required. Simple!

A better motor arming system for OpenTX

With the high power available from modern e-flite motors, motor safety is of vital importance. In this post I'll review a couple of so-called safety features, explain why they're actually unsafe, and describe a couple of simple and secure solutions for OpenTx.

Thoughts on programming motor control

Glider pilots love props! Well that seems to be the conclusion, judging from the requests to add motor support to my F3F and F3J setups. With my Multiplex Cularis ripe for conversion, I decided to take on the challenge.

The key issues with any power conversion are: (1) safety (2) preventing conflicts between motor and other functions and (2) providing a safe arming/disarming function. In this post, I'll describe my thoughts on how to tackle the project.