Last updated 21 July 2022
This popular script is for sailplanes with crow brakes. It allows the pilot 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.
Behind the scenes, the elevator trim is repurposed - instead of applying a fixed offset, it bends the crow compensation curve. When you click the trim, the system automatically chooses the correct point to adjust, based on the crow value.
The script is compatible with all OpenTX transmitters
All data is stored with the model, so if you migrate to another transmitter, even of a different type, all your settings are preserved. Simply install the script on the new transmitter, and you're ready to go.
For more information, see "Crow-aware adaptive elevator trim" (blog post).
Current version: 3.1 (recommended).
Supports all OpenTX transmitters, including Q X7, X-Lite, X9-Lite, X9D, X10/12, TX16S, TX12 and clones.
Older versions (deprecated):
| Ver | Compatible with | Setup Guide (PDF) | All files (ZIP) |
| 2.2 | X9D, X9DP, X9E | Download | Download |
| 2.4 | X10, X12, T16, TX16s | Download | Download |
Tested on the bench with ETC 2.4.0 on RM TX16S, and it appears to work fine. As always, test carefully before use.