Multirotor, multicopter and quadcopter discussion - The Drone thread

First video test on the H-Quad:

Took her for a spin this morning,battery wasnt cog so will need to adjust for that now the camera is onboard.

Didnt push past 60% throttle as visibility was really bad with the mist,so had to take it easy.


 
Doing the build slowly on my first quad, got loads of info now im stuck on what to go for

1 Zip tie the motor down ( Read the if you crash it MAY do less damage to motor)

2 Screw the motor down

 
rishy said:
Doing the build slowly on my first quad, got loads of info now im stuck on what to go for

1 Zip tie the motor down ( Read the if you crash it MAY do less damage to motor)

2 Screw the motor down

Click to expand...

I would use the screws,ive broken many a dji arm,they have a weak point just before the mount,never damaged a motor yet.
 
rhysduck said:
Thanks :-)
I've tried full throttle and it's the same, I've done some swapping about and recalibrated there esc throttle end points to no success.
The servo (turnigy 380MAX) still drifts to the right (from behind) :(
I've got an airplane model on the Tx (Futaba 8FG) and everything plugged into the KK and Rx correctly.
I'm lost :D

Edit: would a little video help?
Click to expand...

Which firmware are you running?

There is a setting somewhere in the menu that sets the minimum throttle level but it actually sounds like a problem with the mixing if only one motor is spinning up, even at full throttle and the servo is moving. I'm assuming you haven't managed to get it up yet? (Fnarr)
 
pazza said:
I would use the screws,ive broken many a dji arm,they have a weak point just before the mount,never damaged a motor yet.
Click to expand...

Another vote for screwing here (I'm doing well on the finbarrs tonight!)

I've broken 4 arms on mine and motors all fine so far, bar the addition of copious amounts of mud. Those are some very long shafts you've got there btw.
 
gandhi said:
Which firmware are you running?

There is a setting somewhere in the menu that sets the minimum throttle level but it actually sounds like a problem with the mixing if only one motor is spinning up, even at full throttle and the servo is moving. I'm assuming you haven't managed to get it up yet? (Fnarr)
Click to expand...
1.2 , can't find my sodding 10pin to 6pin adapter to flash the sodding thing :(
Any idea what that setting is called? I've had a good look through the menus and couldn't see anything that stood out.

And no, it's not up yet :D

I won't bother until this is fixed, can't see how it will fly to any degree in its current state.
 
Yeh the arms on my frame are pretty much the same, they'll snap long before damaging a motor in my opinion! I'm yet to break a motor (although I do think one is on the verge of death :p)

Rhys, have you tried setting it to a different config - ie quad mode, just to see if the motors spin up? If all the motor/esc combos spin up when connected to the transmitter it sounds like something is screwed up on the FC. Could try updating the firmware on the offchance something is bust?
 
PinkFloyd said:
Rhys, have you tried setting it to a different config - ie quad mode, just to see if the motors spin up? If all the motor/esc combos spin up when connected to the transmitter it sounds like something is screwed up on the FC. Could try updating the firmware on the offchance something is bust?
Click to expand...
I plan on updating as soon as I can find my little adaptor!
Right well I tried the quad confit and the same, so reloaded the tri layout and all motors spin up properly but the rudder/yaw servo still drifts.
So into the Mixer Editor screen I go (for ch4)... I changed the RUDDER value to 0 and now no more drift BUT the servo doesn't respond to any stick input. I tried 50 and it drifted still, but slower. (-100 and the servo drifts the other way)

I'm taking a guess at that it's probably supposed to drift to counteract the other 2 props? I see no other explanation for it other than a borked KK board (which I really hope it's not)

rishy said:
is the shaft too big ??
Click to expand...
For what?
 
All in all how much do you think it would cost to build a diy job? Excluding the cost of tx (I could pick up a dx6i off eBay for 80 or so quid
 
DJMK4 said:
All in all how much do you think it would cost to build a diy job? Excluding the cost of tx (I could pick up a dx6i off eBay for 80 or so quid
Click to expand...

Ive spent about 130 ish for everything inc shipping exc TX - but as this is my first build i may have missed a few things out
 
DJMK4 said:
All in all how much do you think it would cost to build a diy job? Excluding the cost of tx (I could pick up a dx6i off eBay for 80 or so quid
Click to expand...

I can price up my build for you if wanted, it's been a complete DIY job based on rc explorers tricopter design. No tx, battery, Rx. Just the frame.

On another note, found the adaptor and the KK is now running 1.5fw.
 
rishy said:
is the shaft too big ??

Click to expand...

Sorry dude, I was mostly making a joke when I said that, I didn't mean to induce paranoia!

Do those prop adapters go all the way down the shaft? They seem quite high up and if the shaft isn't 100% straight it's going to introduce some unwanted vibrations I'd guess! I'm only asking as I've only used motors with no or a very short shaft sticking up!
 
rhysduck said:
I can price up my build for you if wanted, it's been a complete DIY job based on rc explorers tricopter design. No tx, battery, Rx. Just the frame.

On another note, found the adaptor and the KK is now running 1.5fw.
Click to expand...

Glad you found it. 1.2 is pretty rubbish as far as I'm aware. I'm on 1.6++ and there is a "misc" setting group. The minimum throttle level is in there, but it sounds like you have it sorted!

The servo at the back should move to counter the two front props and induce the yaw as required.

Interesting thread here about settings....
 
DJMK4 said:
All in all how much do you think it would cost to build a diy job? Excluding the cost of tx (I could pick up a dx6i off eBay for 80 or so quid
Click to expand...

You could probably do it for under £150 without the TX/RX if you homebuild.

Cheap hobbyking frame is about £10
4 motors - £40ish from giantshark
KK2 flight controller £25
4 Esc's £40
couple of batteries £20

Various bits of solder, wire etc would soak up the rest.

I think mine came to about £175 including a cheap TX/RX combo from Giantshark!
 
rhysduck said:
reloaded the tri layout and all motors spin up properly but the rudder/yaw servo still drifts.
So into the Mixer Editor screen I go (for ch4)... I changed the RUDDER value to 0 and now no more drift BUT the servo doesn't respond to any stick input. I tried 50 and it drifted still, but slower. (-100 and the servo drifts the other way)

I'm taking a guess at that it's probably supposed to drift to counteract the other 2 props? I see no other explanation for it other than a borked KK board (which I really hope it's not)
Click to expand...

The servo will move depending on throttle amounts and the angle of the copter I believe, unless it's constantly moving back and forth, or is tilting right over I'd give it a shot flying it. Without it being in the air and reacting to movement the KK2 won't be able to calculate what angle it should be at accurately.


Re: Cheap custom builds. Here is what I roughly priced up for a friend a couple of months back, some of the prices have changed but I've just copied this straight from a notepad doc :p It includes everything you'll need bar a LiPo charger, frame and cables. You can easily build you're own cheap frame out of bits of plastic plumbing piping for £2-3 :)
Basic 6 channel receiver. Programmable. £28
http://www.giantshark.co.uk/product/170571/flysky-24g-6-channel-transmitterreceiver-

1650kv motor £5 each
http://www.giantshark.co.uk/product/167464/cf2812-1650kv-brushless-outrunner-motor-

3mm prop adaptor £0.75
http://www.giantshark.co.uk/product/167764/3mm-prop-adapter
OR
3mm prop saver. (don't get this if using 3 blade props!)
http://www.giantshark.co.uk/product/167762/30mm-prop-saver

20A ESC £6.84 each
http://www.hobbyking.com/hobbyking/...Brushless_Speed_Controller_UK_Warehouse_.html

FC (KK2) £20
http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=49254

1800mah 3S Lipo £11.13
http://www.hobbyking.com/hobbyking/...800mah_3S_25_50C_Lipo_Pack_UK_Warehouse_.html

5030 3 blade props: (6" 2 blade are comparable) £1.70 a set
http://www.hobbyking.com/hobbyking/...ee_Blade_Propeller_ABS_3pc_UK_Warehouse_.html
http://www.hobbyking.com/hobbyking/...ee_Blade_Propeller_ABS_3pc_UK_Warehouse_.html
 
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