Crow-aware elevator trim

Description

This popular Lua script allows you to optimise pitch trim quickly across the full range of crow - simply using the elevator trim. The process is completely transparent - no looking down, no switches required! This means you can achieve perfect crow trim, even before the first landing of a new model, and even if the trim behaviour is non-linear.

Behind the scenes, the elevator trim is repurposed. Instead of applying an elevator offset, it adjusts a crow compensation curve. The script determines which point to adjust automatically.

The script runs on any OpenTX or EdgeTX transmitter. The curve and configuration are stored with the model, so no retrimming is required if you migrate your setup to a different transmitter.

For more background, see "Crow-aware adaptive elevator trim" (blog post).

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