MultiWiiCopter.com Scarab™ Airframes: Knife,FPV-Reconn,Vampire,Y-Siix,QuadOcta,Armour - Page 54 - RC Groups
Thread Tools
Nov 08, 2011, 01:49 AM
Registered User
Hello,

I'd like more info on how to make 12v with the equilibrating plug? To me, on a 4S, there is 3 x 3.3V and one share ground. Putting them in parallel will still give 3.3V and I don't figure out how to put 3 of them in serial to make 12v without making a shortcut as the ground is shared between the 3. Could somebody give a wiring diagram?

Greg
Sign up now
to remove ads between posts
Nov 08, 2011, 12:07 PM
Registered User
drmgcm's Avatar
Quote:
Originally Posted by Adidas4275
thanks, what pins are you using from the lipo? is there a connector designed to connect to the balance connector that isnt on a board?
Quote:
Originally Posted by glambert
Hello,

I'd like more info on how to make 12v with the equilibrating plug? To me, on a 4S, there is 3 x 3.3V and one share ground. Putting them in parallel will still give 3.3V and I don't figure out how to put 3 of them in serial to make 12v without making a shortcut as the ground is shared between the 3. Could somebody give a wiring diagram?

Greg
Hi Guys,

Okay so i'm using a standard JST-XH 4s Balance plug, now i've attached a pic for the pin breakdown, but use a multimeter to check before hand, just in case your plug is wired different, it shouldn't be though.

Then it is just a case of making a plug to tap into pin 1 (Positive for the Pack) and Pin 4 (3s Negative on the pack). You can probably buy a male JST-XH plug i've just not looked yet, however i just made mine for now using an old JST-XH housing and some spare pins i had. As you can see in my second pic, and the last of how the two plug together.

Hope this helps you guys.

All the best

Danny
Nov 08, 2011, 07:37 PM
Registered User
Ive been using a small 3 cell lipo for powering the vTx and camera too but I really should try out the balance plug method. Saves grams plus it saves having to charge another battery.
Nov 08, 2011, 11:51 PM
MultiCopterPilot & Film Maker
crazyj's Avatar
It's probably apparent, but still I'll put it out here... When using the balance-plug method for powering your VTX - make sure you get the polarity right the first time! There are no second chances once the genie has been released from the electronics.
Nov 09, 2011, 12:06 AM
manual flying apologist
Adidas4275's Avatar
yeah definately. i was hoping to get a connector for it so that I couldnt plug it in the wrong way.

have not had time to really look.

also the voltage use from 12 components might be enough to cancel out the weight savings.

might
Nov 09, 2011, 12:12 AM
Registered User
I did one the wrong way once.... and the Genie did get out....

Thats was my best 'small voice'.....
Nov 09, 2011, 12:32 AM
manual flying apologist
Adidas4275's Avatar
I think this is the plug for 4s to tap into the female plug
http://www.bphobbies.com/view.asp?id...8&pid=B3805292
Nov 09, 2011, 08:51 AM
Registered User
drmgcm's Avatar
Quote:
Originally Posted by Adidas4275
I think this is the plug for 4s to tap into the female plug
http://www.bphobbies.com/view.asp?id...8&pid=B3805292
Excellent find, i'll be ordering some of them too, but Jason is correct, checking polarity on a DIY plug is very essential. I always use a multimeter to test my pos and neg outputs etc.

Toasted many electronics years ago by not checking.

All the best

Danny
Nov 11, 2011, 03:43 AM
disenfranchised...
AP_OZ's Avatar
hey guys,

here is something a little different..... i shot this for a mate who removed a 45m (147ft) tree from a backyard in Sydney Australia... Aerial shots were done using a multiwiicopter PARIS Sirius & SCARAB YSiix and hexiicopter - http://www.multiwiicopter.com/produc...opter-multiwii

hope you all enjoy!!

Cheers,

John

Shepherd's Tree Service - Promo Clip (5 min 3 sec)
Nov 11, 2011, 04:04 AM
Registered User
Johno...thats is way cool.... particularly for a boy who is not good with heights... I really respect the ability to stand up there....
Nov 11, 2011, 06:49 AM
Registered User
I've tried the new GoPro HERO2. It has some improvements. But for the aerial video where the frames are important you still have the same wide angle on 720p 50fps.

You can only change angles on 1080p mode.
Just for the info =)
Nov 11, 2011, 03:48 PM
Registered User
drmgcm's Avatar
Quote:
Originally Posted by AP_OZ
hey guys,

here is something a little different..... i shot this for a mate who removed a 45m (147ft) tree from a backyard in Sydney Australia... Aerial shots were done using a multiwiicopter PARIS Sirius & SCARAB YSiix and hexiicopter - http://www.multiwiicopter.com/produc...opter-multiwii

hope you all enjoy!!

Cheers,

John

http://vimeo.com/31945584
Excellent Video man, well put together and very professional.

All the best

Danny
Nov 12, 2011, 02:35 PM
Registered User
Hello,

After my trip in Tahiti, I am asking myself why not tailoring my quadocta with short boom, like 15 cm instead of 26. With a quad octa frame, that would still give a distance between props in the range of what is the Gaui 330. So if the jerky Gaui can be stable, I don't think a tune PID on the multiwii cannot do it... But the big advantage will be that this quad will fit in my suitcase without needing to disassemble the booms. Maybe this could give less vibrations as well, I never had vibrations or gello with the Gaui and never balanced anything. Please share your experience if you tried the short booms.
Gregory
Nov 14, 2011, 12:36 PM
Registered User
With all the feedback received, I thought that I would better do it and test it... Here is it, the Scarab compliant with cabin luggage for frequent travelers... I cut the booms to 12 cm then the 8'' props just not overlap with the frame. This gives a diagonal of about 40 cm. I hesitated between using only the small frames or the quadocta frame but I found it is taking less place in the case with the quadocta frame. Very stable flight when auto level is on. Not tested in FPV yet as I miss some daylight when I come back from work... Gregory
Last edited by glambert; Nov 14, 2011 at 12:42 PM.
Nov 14, 2011, 04:32 PM
Registered User
Tell us your findings I have little shorter booms on my mini scarab and it flies great. When the camera mount will be complete it could fly with the GoPro without the case.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Twisted Hobbys - Telink 43" SU 29 - Build, Fly, Vid hercdriver7777 3D Foamies 635 Oct 27, 2017 10:37 AM
Discussion Radical RC Stick 400 Build Thread~~~Now with Video Carnifax Electric Plane Talk 186 Aug 20, 2014 09:55 PM
Question Skywalker 3 Build Advice and Eventual Build Thread! Ecibob FPV Talk 2 May 01, 2011 05:46 PM
Discussion Easyglider Build Thread (Help wanted) worzul Foamies (Kits) 2 Mar 18, 2011 08:45 AM