AM32 + MN2806 KV650 EVO configurations

ArduCopter Copter 4.6
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Has anyone matched an AM32 ESC with T-Motor MN2806 KV 650?
What is the best AM32 ESC configuration for the motor?
I try to understand my BLheli_32 configurations and port them to AM32.
I cannot find an exact match.
After configuration, I would also like to update the ESC firmware to v2.20.
@rmackay9

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Can’t say exactly for those motors, but in general:

  • Turn up your DSHOT rate to at least 4 times loop rate (or more)
  • Try variable PWM with 16-32 khz
  • Auto Timing Advance
  • For motors that size, turn down the ramp rate to 10% or lower. This is very important!
  • Make sure that the motor KV and motor poles are set correctly for your hardware.
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Hi @Jai.GAY,

I use the 400kv version on my aerial photography copter (you probably already realised) paired with the equivalent of the VimDrones 20amp ESCS.

I haven’t spent much time figuring out the best configuration though because they seem to work fine with just these parameters set:

  • MOTOR_KV = 380 (400 would be correct but AM32’s parms have an issue)
  • MOTOR_POLES = 14 (default)
  • ESC_INDEX = set each to a unique number 0, 1, 2 or 3

@Huibean recommended that I spend time finding the best timing advance value but I haven’t gotten to that yet.

P.S. not sure why I even bother to mention it but MAD RC has a nearly identical motor but the base plate mounting is a little different.

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Sorry, I am not sure which field you are referring to.

Thanks and noted. I believe you mean the Extended Settings → ramp rate.
Is my suggested Limits → Low voltage cut off settings okay?

Yeah, I only have 620 or 660 KV options. I chose 660KV.

Sorry, I am not sure which field you are referring to.

@rmackay9, did you turn ON the Sinusoidal Startup and Stall protection?

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This is a good piece of information, and it helps to keep the price competitive. Appreciated.

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Hi @Jai.GAY,

I haven’t turned on Sinusoidal Startup and Stall protection.. but TBH, I just didn’t know about those features

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The arducopter parameter, SERVO_DSHOT_RATE,4

Yes.

I suggest you disable both the low voltage and high temperature cut-offs. Monitor the temperature of the ESC, use extended telemetry if it will support it, and make sure they are getting enough cooling. I would rather damage the ESC, than have it cut off and crash the drone.

I think sinusoidal start up and stall protection are for ground vehicles.

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