#Tuning my Marketplace quad on BF 4.0.6

73 messages · Page 1 of 1 (latest)

ashen forge
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hello, i need some help tuning everything on a quad updated to BF 4.0.6, it's fairly old so this is the recommended version.

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i'm not sure what info i need, so anything you want me to provide, let me know

worldly ermine
ashen forge
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ye

worldly ermine
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Blackbox and DVR

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Please and thank you

ashen forge
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what do i need to do while flying with them

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also what's dvr

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i'm flying LOS if that's a video thing

worldly ermine
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Try to do some flips and rolls, and some periods of normal cruising flight. Ideally you want a mixture of maneuvers to get good data recorded. You don't need to go bonkers

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DVR is Digital Video Recording

ashen forge
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figured

worldly ermine
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So yea, it's a video thing

ashen forge
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okay, so i don't need that?

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i don't even think i can get it

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i have a camera but no headset

worldly ermine
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I guess we'll have to do without

ashen forge
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alright

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lemme go outside and do some flying 🙂

ashen forge
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saving the flash @worldly ermine

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will send when done

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i don't have that mass storage feature so hopefully this works lol

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and i did have one crash because i did a stupid

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but i did two flips, and just did some back and forth stuff

worldly ermine
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Looks bouncy

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That's a technical term

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It means

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Bouncy

ashen forge
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lol

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very helpful 😅

worldly ermine
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Haha I'm scrolling through, one sec

ashen forge
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ok lol

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also, if i drop throttle then full throttle, my battery alarm beeps for a second. is that damaging the battery?

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only on one of my 1300s

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and when the others are low

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this 1300 is doing it at about 80% charge, the others do it when they're <40 ish

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but this one is an older battery so it could just be age

worldly ermine
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Well it does look like the battery voltage is sagging pretty hard when you punch the throttle. This is very indicative of deteriorated batteries, unless you're flying in cold or the batts already low voltage to start

ashen forge
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i was running the old battery so that could be why 🙂

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and i started around 12.2 i think

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or 12.1

worldly ermine
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The lowest it sagged was 9.34V, which is definitely below the pre-defined voltage alarm level

ashen forge
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which is kinda close to the danger area right

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yea

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alarm is 3.3v/cell

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so 9.9

worldly ermine
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Yea that's 3.1V/cell

ashen forge
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you're never supposed to go below 3

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iirc

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sometimes i hear 2.7

worldly ermine
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Nooo not on lipos

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You want to land around 3.4-3.5

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Going below 3.2 is bad juju

ashen forge
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noted

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this battery is old anyway, so that's prob why

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i'll replace it

worldly ermine
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My first recommendation for PID tuning would be to lower your P gains until you don't see the oscillation any more

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Just drop them about 5 points and then go fly again

ashen forge
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ok

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which ones

worldly ermine
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Pitch and roll

ashen forge
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roll pitch or yaw

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ok

worldly ermine
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We'll leave yaw alone for now since its a bit trickier and you're flying LOS

ashen forge
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ok

worldly ermine
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PID tuning with just BB and no FPV feed is a longer process, so just be patient

ashen forge
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ok

worldly ermine
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Best way to tune is to change few knobs at a time

ashen forge
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ye

ashen forge
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can too low of a P value cause worse wobble?

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@worldly ermine

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because i think that's what happened