Guillows 180 Cessna with Parkzone UM P51 guts? My First free flight conversion! - Page 27 - RC Groups
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Dec 04, 2010, 04:56 PM
Registered User

Need help on how to connect an AR6400 for brushed.2S motor


Back in August there were several posts related to using 2S power on a brushless ESC all driven by an AR6400.

Does anyone have any recommendations on what brushed esc can be used with a 2S power source to power a brushed 8 volt motor?

I have an old unused brushed esc (ElectriFly C-12 Micro ESC 2-3 LiPo), but its output voltage reads 5 volts on my meter, and the AR6400 only wants 4 volts.

And I do not need to use that esc and another would be acceptable.

Also a schematic would be appreciated.

Thank you for your ideas and assistance.

Bob
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Dec 04, 2010, 07:39 PM
Lawn dart pilot/builder
Prime_8's Avatar
go to radioshack , look for a diode like 1400n or n1400 or n1004 .. some mix of thos LOL
sorry i forget .. LOL

anyhow , if you look it will have a just over 1v ..look for one that can take teh amps you need to draw and has a forward voltage drop of just over 1 V
shoudl be a wee pack of 2 ... now go home power uo your esc , ( only ) ,
put the diode on the RX supply/bec pin (centerpin) . and test the output with your meter .
if you did it rite you shoudl be supplying your ar4600 with 3.5 -3.7 v ? if i remember .
if nothing flip the the diode end for end .
Dec 04, 2010, 09:41 PM
Registered User
I R Irv's Avatar
I think I bought 1N4003 diodes, the white band on the diode goes toward the 6400.
TODD
Dec 04, 2010, 10:31 PM
Lawn dart pilot/builder
Prime_8's Avatar
^^^ yeah that's it ..
ieach diode inline dropps voltage ,
i theory you could run a 3s esc & motor with enough diodes. LOL
trick is getting V drop correct is all .
the ESC wil LVC on it's own so it sorts itself.

was thinking of trying to make UM p47D , to hold a 5g HK brushless in direct drive using a plush ESC ,
just need some spare UM guts. LOL
Dec 04, 2010, 10:47 PM
Power Wheels Guru
UNGN's Avatar
Here's a 2S brushed Brick schematic for the AR6400
Dec 04, 2010, 10:51 PM
Headed to Naval Flight School!
PiperCub49's Avatar
Quote:
Originally Posted by Prime_8
ieach diode inline dropps voltage ,
i theory you could run a 3s esc & motor with enough diodes. LOL
trick is getting V drop correct is all .
the ESC wil LVC on it's own so it sorts itself.
I actually need to get a 3S setup. Does anyone know what diode(s) I would need?

Thanks,
PC49
Dec 04, 2010, 10:55 PM
Power Wheels Guru
UNGN's Avatar
Quote:
Originally Posted by PiperCub49
I actually need to get a 3S setup. Does anyone know what diode(s) I would need?

Thanks,
PC49
The same. Battery voltage doesn't really matter. Its the BEC voltage that is being reduced by the diode. You could use a 10S ESC if the BEC voltage was 5.0V
Dec 04, 2010, 11:25 PM
Headed to Naval Flight School!
PiperCub49's Avatar
Quote:
Originally Posted by UNGN
The same. Battery voltage doesn't really matter. Its the BEC voltage that is being reduced by the diode. You could use a 10S ESC if the BEC voltage was 5.0V
Thanks UNGN. So there I have it. 3S/AR6400 combo with the 1N400X diode...so cool.

-PC49
Dec 04, 2010, 11:25 PM
QuAd FaNaTiC
Razors edge 29's Avatar
For the 2S set up used with 2 1S batts - you just y off the power lines and add in two 1S connectors correct?


Quote:
Originally Posted by UNGN
Here's a 2S brushed Brick schematic for the AR6400
Dec 04, 2010, 11:41 PM
Lawn dart pilot/builder
Prime_8's Avatar
yeah .. but series , as the 2s name implies,
just test V with your meter to be sure you got it ..

i made a 2x mini jst females to 1 Jst (red) , so i don;t have to change speed control .


i'm thinking same , i have some 160mah's still fresh un used so they woudl match up well.
now i need a plush & a new 5g BL , i thinkit will look nice in a p47d cowl .
needs 5 A .. at WOT with a 5x3gws .. but makes ~140g thrust .
my 2 160even at 20c only my a hair over 3A .. lol
so i may order a rhino 2s pack .
Dec 05, 2010, 09:38 AM
QuAd FaNaTiC
Razors edge 29's Avatar
I have ordered a plush and have the AP05 BL so I am hoping to use it on some 2S projects.
Dec 05, 2010, 09:27 PM
Lawn dart pilot/builder
Prime_8's Avatar
nice .
cant wait to see what you do .
Dec 08, 2010, 07:54 PM
Registered User

Another brushed AR6400 question


No more questions..diodes solved my last issue.

I appreciate everyone ideas on getting a brushed ESC and motor to work off of the AR6400.

Everything works perfect as per UNGN's schematic.

Again, thanks to all for your help.

Bob
Last edited by bob2fly; Dec 09, 2010 at 03:44 PM.
Dec 08, 2010, 08:24 PM
Lawn dart pilot/builder
Prime_8's Avatar
black bec / is actualy your bus gorund , it can / should go to the ground pin on brick where ESC / servo woud go .
basicly , hook up you ESC to the brick with just the red (bec +V high) lead off .
some esc's the ground(black/brown) side of the bec / signal wire is common but not linked to thier main ground in . ( isolated to reduce noise to brick )
Mar 29, 2011, 10:07 PM
Registered User
Matt D.'s Avatar
Hey Razor,
I just saw this thread again.

Have you done any more work towards this little plane?
Matt


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