Setup for RunCam Thumb Pro Record Trigger

ArduPlane Plane 4.4
1

I am trying to trigger video recording of my RunCam Thumb Pro on a Matek H743 Wing V2 flight controller flashed with Plane 4.4. Most of the time when the board boots, I get the message “Pre Arm - Camera Not Ready.” About every 1 of 20 bootups, I will get a Camera Ready message, but when I toggle the RC switch, it immediately goes back to Camera Not Ready and the recording does not start. I have Power and ground connected to 4v5 and Ground pins. I have Tx/Rx connected and reversed to Rx4/Tx4, which map to Serial6 in ArduPlane. My transmitter switch is mapped to channel 10. When I toggle my RC switch I can see the message RunCam Control High. Here is how I have ArduPlane configured:

SERIAL6_PROTOCOL = 26 (RunCam Protocol)
SERIAL6_OPTIONS = 0
SERIAL6_BAUD = 115 (115200)
CAM_RC_TYPE = 4 (RunCam Hybrid / RunCam Thumb Pro)
RC10_Option = 78 (RunCam Control)

Do I have this configured properly? Thanks for any help.

2

Is the camera polling during boot occasionally giving up before the camera is ready after powering up?
Apparently you can define the length of delay before polling stops.

3

It is now working with the addition of CAM_RC_FEATURES=192 (Start Recording / Stop Recording)

I am also using SERIAL6_BAUD = 230 although I don’t think that matters.