Viewing 5 posts - 1 through 5 (of 5 total)
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  • #20810
    Cr4sH
    Participant

    Hi folks – first time posting here. Built a mini tri a few months ago using the stevis naze 32 setup. thought id give the triflight f/w and the cli code a go

    ive not flown it yet but im getting a lot of servo wobble – at times its quite ‘violent’ – all this is on the bench. One thin i have noticed is the wobble disappears as the throttle increases – even when unarmed!

    dont know if this is relevant either but when i was using the sliders in the motors page of cleanflight i am also gettting a lot of readings on the S3 servo tab – Its a full naze board so not sure if this has any bearing. this S3 also changes readings relative to me moving the copter

    So hoping you guys can help me here – is the servo wobble just a setting i need to adjust or something more sinister (oh nearly forgot its a savox digital metal gear servo on a fortis titan tilt mech – the rest of the copter is basically DW carbon arms frame etc with dys 2208 1400kv 8×4’s etc).

    any help appreciated – could do a video of the tri if needed

    thanks in advance

    Chris

    #20838
    Cr4sH
    Participant

    reading through posts on here and been having a play – the wag comes from self induced oscillation – if i hold the tail boom it stops.

    made a temporary bracket to lower the motor closer to the pivot point of the servo and the wag disappears (almost – but that could just need tuning out but its barely noticable)

    looks like im designing another yaw mech

    #20840
    lauka
    Participant

    What kind of PID gains are you using for the yaw? Sounds like a P term oscillation. Try lowering the yaw gains to half and see if it makes any difference.

    #20849
    Cr4sH
    Participant

    thanks – will do

    is that half of P I and D or just P btw?

    #20862
    LeoTheHuman
    Participant

    Try with P first. If it doesn’t help, lower I.

Viewing 5 posts - 1 through 5 (of 5 total)
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