Multirotor, multicopter and quadcopter discussion - The Drone thread

Skeeter said:
SMA and RP SMA are the 2 types of connector to attach the antenna to the vtx or receiver. RHCP stands for Right Hand Circular Polarization and is the direction the spiraled antenna wires go. They are unrelated.

And yes the kit comes with a 3.5mm banana to battery connector cable and plugs straight into a B6 fine (I have one).
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Should be sorted with that for now, then I will get a Mobius and job done. No more big spending for a while lol

Ordered, £181, opted for the UK Direct channel, £10, then because of the conversion through paypal came to about £202, so all I have now is any custom charges I guess

And I will order the antennas from the UK
 
Getting ready

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DJMK4 said:
Peeps with the Naze32 on a 250 quad and 2300k motor, what throttle values and range are you using on your quad?

So far I have set the following, hopefully this is ok

Max throttle: 2000
Middle Throttle: 1500
Failsafe Throttle: 1200
Minimum Throttle: 1150
Minimum Command: 1000

Under the config tab, and also the throttle MID and EXPO under the Naze reciever tab

What I have got set (and I have not changed this)

Throttle MID: 0.50
Throttle EXPO: 0.00
RC Rate: 0.90
RC EXPO: 0.65
Channel MAP: (Werdly this is AETR1234, where my tx is set TAER1234) But the stick movements when plugged in tho the Naze seem to show on the bars correctly, should I be worried?)


I guess when I look at the reciever tab, looking at the colour bars, all should be around 1500, but throttle whats the ideal range to use here?

Also from the naze board, where the breakout cables (same as the reciever pins are on) I have lots of un-used connectors, which for the moment im hiding under the nazeboard. Tucked away, just incase I need them for something


I still seem to have one ESC which is burning up, I cant keep my finger on it too long


and hugely worried that the right two motors randomly cut in and out during throttle, and when starting to throttle up, not all motors kick in at the same time, if you apply a slight bit of throttle, maybe 2 or 3 of them will kick in, othertimes all of them will, but throttle down, and 3 of them will be going and 1 will randomly stop


Something is not right here. Bet its something to do with all the wire cutting and resoldering
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I'm running min 1150, max 1900 throttle.

Your rates seem good they are between aggressive/acro and starter rates. If you don't have any experience flying try

On PID tuning tab:
roll&pitch .18
yaw rate .98 (this is quite high but I like fast yaw, maybe .7 .6 if starting
TPA 0

On Receiver tab:
throttle mid .5, throttle expo 0
RC Rate .7, RC Expo .4

Or remember you can configure 3 different profiles with different rates and select them with the stick with a Naze32. I have rate for calm to acro rates set between profile 1,2 and 3.

Your motors should be starting together, have you calibrated the ESCs?
 
There are some great groups on FB for trading 2nd hand gear (FPV multi-rotor, heli and fixed wing; buy & sell FPV, used FPV gear & trade, etc).. Shame we can't use the MM for this but now OCUK is selling quads, maybe!
 
Genoma said:
I'm running min 1150, max 1900 throttle.

Your rates seem good they are between aggressive/acro and starter rates. If you don't have any experience flying try

On PID tuning tab:
roll&pitch .18
yaw rate .98 (this is quite high but I like fast yaw, maybe .7 .6 if starting
TPA 0

On Receiver tab:
throttle mid .5, throttle expo 0
RC Rate .7, RC Expo .4

Or remember you can configure 3 different profiles with different rates and select them with the stick with a Naze32. I have rate for calm to acro rates set between profile 1,2 and 3.
Your motors should be starting together, have you calibrated the ESCs?
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Thanks for the info, I want to fly first before adjusting any PID stuff, however I will dial in some of those throttle mid, expo, rc rate, rc expo settings.

At the moment the only profiles I have set on Aux1 (3 way switch) is angle mode and horizon mode and not assigned the other one.

I have experience in flying, my DJIF450 and I am quite good at doing some faster paced flying, however for this one I want to build up confidence, I want to get it up in to a decent altitude then start getting used to stick responses just so I dont smash it in to the ground

I have calibrated the ESCS, and it did help but there sometimes still is an issue whereby if I throttle up (just stick up) they will pretty much all spin up

If I throttle up very gently (literally by the markings on the stick) sometimes one may not start at the same time but will get this hesitant (I want to spin but not quite there yet) push it up a bit more and it spins up



Also I did a tie down test with the props on yesterday, all my props are spinning in the correct direction, however when I throttled up one of the prop nuts came loose at the higher end of the throttle range, I thought these were self tigtening on the Emax 2300kv motors? black prop nut = ccw, silver = cw motors

Maybe me just not putting one on properly.
 
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It could be simply the surface isn't level or some minimal discrepancy in the gyros so that motor is getting less power to compensate.

With the naze you switch profiles before each flight with a stick combo. Really useful to try different PIDs/Rates on the field.

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And configure your profiles in baseflight/cleanflight by selecting the profile drop down in the PID tab.

not sure about the motor nuts sorry :)
 
Yep, the motors will behave in an odd fashion when there are no props on. It's trying to make itself level when it can't.
 
you have calibrated the gyro on a flat surface yes? genoma is correct, it is most likely the gyro just trying to level the craft off by not providing as much thrust to one motor, turn the quad 180 degrees and see if the same motor or same orientated corner still does it, if it is the same orientated corner then it is just levelling its self.
 
Yeh I done the calibration on a desk with a flat surface, seems to be ok as when its level it visually looks that way through baseflight

Will give it another re-calobration and retest


Motors I have just realised something and its annoyed me if im right

Motors have spinning direction (IE CW, but have CCW threads) if I hold the nut and turn the motor clockwise, the nut comes loose.

Think im going to have to change my motors around, so will need a new ESC because one of them is bodged
 
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That would have been cheaper than what I just ended up doing

So it doesnt matter that you have a CCW or a CW thread on our motor shaft? as I would expect most of the Nylocs would be one of those, but not the other unless they do both

May aswel just swap the motors around now iv started
 
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once those emax motors are on the right corners you wont ever have a problem with them coming un done, I haven't.

just took the QAV out and the wind was so strong the quad was yawing 90 degrees of its own accord. Wish this bloody wind would do one!
 
Oh dear :-( the wind was indeed strong today. Came down rather hard and snapped an arm in two. Good job it's a 3D printed frame, new arm made and fitted all in the same day.
 
Yeh I hit the deck quite hard, nothing but 3 props to replace though.

Wind has been pretty much constant gales here for around 2 or 3 weeks!

what 3d printer do you have as I have been thinking about one for a while, whats the resolution like on the prints?

And dj, how will you need a new esc mate?
 
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Kanifee said:
Yeh I hit the deck quite hard, nothing but 3 props to replace though.

Wind has been pretty much constant gales here for around 2 or 3 weeks!

what 3d printer do you have as I have been thinking about one for a while, whats the resolution like on the prints?

And dj, how will you need a new esc mate?
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It's only an Printrbot LC, it's a few years old. I got it off ebay 2nd hand. I want a bigger build area so I can print larger prints. I've printed 0.2mm and it looks good, but I have applied a few upgrades.
 
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