Some solutions are obvious and just require reading the manual, or checking connections. But some solutions are unexpected and weird.
This will document some of the more unusual problems that can mess up an RC setup
List of odd problems and the solutions
INAV
Cause - Switch mistakenly assigned to Aileron channel in the radio
Disarming with any aileron input
Cause - Used an existing model setup in the radio which had aileron mixing on the same channel as Arming in INAV.
GOLDEN RULE - Create a new fresh model for your INAV setup to avoid any leftover mixes
Outputs working in the INAV configurator but actual servos don't move
5V servos used with 6V servo BEC setting. One servo burned out and prevented others from working..
SpeedyBee F405-Wing MINI
USER modes not available for analog camera switching in INAV 7.0
Cause - This feature missed the deadline to be included in INAV 7.0. Updated firmware available on the Product page and INAV 7.1
Board stopped working after prolonged setup session
Cause - Bent pin on the "between-board" connector after repeated disassemblies.
SpeedyBee F405-Wing
No voltage on DJI 9V port
Cause - Bent ground pin needed straightening
No output on S8, no Soft Serial for S-Port function
Cause - Factory firmware bugs, upgrade to INAV 6.1.1
FrSKY GRX8
Receiver unable to enter bind mode
Cause - Worn bind button contact. Needed to push harder on the bind button
Kootai A505 J3 Cub
Will not initiate
Cause - Futaba FASST protocol uses REVERSED throttle channel
Skywalker X8
Wings out of alignment.
Manufacturer glued the spar at the top of the channel in one wing and bottom of the channel in the other wing - Cut out spar and foam packing and re glue correctly.
FIMI Manta - Matek F405 VTOL - Ardupilot ELRS
RC connection won't work
Cause - SERIAL5 was set to CRSF (Parameter = 23) as well as SERIAL6 which prevented Rx connection.
Only SERIAL6 should be set to CRSF
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