I recently purchased an F4 Pro V3 FC, and have been putting it into an HK H-quad frame.
I've set it up with Betaflight (I think it should be OK), and gave it a maiden flight. It was pretty darned horrible!
The motors accelerate quickly (at low throttle), then slow down (despite increasing the throttle) and start to randomly hunt. At around half throttle it may take off, but wobbles about pretty unstably. All pretty horrible!
It's as if the FC isn't sending sensible signal to the ESC's.
Any ideas from anyone?
Could I get the problem because I haven't removed the ESC red wires (I have the board being powered via the Bat+?
I'm using the default ESC protocol. Is that OK for ESC with SimonK firmware?
Does it sound like gyro problems on the FC? (I had to reset the forward position on the board, as the arrow on the quad simulation was nowhere near pointing the same way as that on the board. Could this be wrong?)
I put my mini KK board in the frame, and the quad flies (although I haven't optimised settings etc, so the yaw is too slow, but it hovers stable, and responds to the TX OK).
Help would be appreciated.
P.S. I've built quads and tricopters with KK/CC3d/Naze32 boards and using INav and Cleanflight, so have a reasonable understanding of setting such things up.)