Cleanflight - Inflight PID tuning and rate adjustments.
Channel: Dominic Clifton
Date: 25/10/2014

Cleanflight now makes it possible to adjust PIDs and rates using transmitter switches/pots and auxillary channels whilst flying!

Documentation: https://github.com/cleanflight/cleanflight/blob/master/docs/Inflight%20Adjustments.md

New binaries are available.

The configurator has not been updated to support this yet.  Configure via CLI for now.