Servo mapping confusion

ArduPlane Plane 4.4
1

I’m building a Tri-VTOL V-Tail on a Speedybee F405-Wing. The front two motors have Tilt.
I’m new to Ardu, and I can’t quite get my head around the servo outputs.

Do the servo numbers in the ‘Servo Output’ tab, directly reference the S# numbers on the speedybee?
e.g Servo 1 in the config, is servo output 1 on the board?

Like this?

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Or is there something more to the mapping that I’m missing?

I seem to have some strange behaviour on servo 5 output. It is set as an Aileron the same as #4, but it isn’t responding smoothly. #4 smoothly responds to be tilting the board left and right (as an Aileron should). But servo 5 will only go to 1100, or 1900, nothing in-between.

2

Yes. More detail here Speedybee F405 Wing
Pay attention to timing groups when mixing motors and servo’s

3

Thanks, that helps a lot - Especially the timing groups. I presume the strange aileron behaviour is because its in a group where DSHOT is enabled.

I’ve rearranged the outputs so that the three motors are in a timer group 3. There would be a wasted output if I use group 1&2 as I was previously.
There is a slight typo on the ardu page, S2 is in both group 1 and 2. But the speedybee manual has the correct groups.

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I’ve noticed I nearly always get an error when swapping the functions, yet it appears to save anyway. Is this a known bug? Or am I doing something wrong?

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4

Not sure. I use the Full Parameter List. Sometimes those menu based screens are not up to date with the latest firmware versions.

5

OK thanks.

Is PWM, DSHOT etc. applied to the timer groups automatically depending on the function you have selected?

6

I also can’t seem to test the motors, I get the error “Command was denied by the autopilot”
I have no safety button, so BRD_SAFETY_DEFLT = 0.

I also tried to calibrate the ESC’s, but get the error "Set param error. Please ensure your version is AC3.3+

When I power the FC and ESC, I initially get the usual three beeps. then a pause, then three more power up beeps, followed by two low then high that indicate it has a low throttle signal.