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wireing a battery


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#1 Joshua Dannais

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Posted 14 June 2007 - 06:34 PM

does anybody have a sketch or Do-It-Yourself on how to wire a 12v battery to a 4-pin XLR? Any recommendations?

Thanks
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#2 Joshua Dannais

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Posted 14 June 2007 - 06:53 PM

I spelled wiring incorrectly, and the reason I ask is would anybody have bought this camera for this price?

http://cgi.ebay.com/...em=130093642313
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#3 Clive Tobin

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Posted 14 June 2007 - 08:00 PM

I spelled wiring incorrectly, and the reason I ask is would anybody have bought this camera for this price?...

Pin 1 is negative and pin 4 is positive.

If the camera has the old governor motor, pins 2 and 3 might be wired to pilot and bloop.
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#4 Joshua Dannais

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Posted 15 June 2007 - 06:23 PM

Pin 1 is negative and pin 4 is positive.

If the camera has the old governor motor, pins 2 and 3 might be wired to pilot and bloop.



Does this look right? And then I just hook the wires up to their respective + - on any 12v battery, and doing nothing with the middle wires?

Posted Image



thanks
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#5 Clive Tobin

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Posted 18 June 2007 - 06:54 PM

Does this look right? And then I just hook the wires up to their respective + - on any 12v battery, and doing nothing with the middle wires?...

Right.
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#6 Daniel Madsen

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Posted 18 June 2007 - 07:19 PM

pilot and bloop...what is this??? Have any of you used a resistor to lower a batteries voltage so it can be used with a smaller camera?

Edited by Danielle Frankinshten, 18 June 2007 - 07:21 PM.

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#7 Bernie O'Doherty

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Posted 18 June 2007 - 08:51 PM

Hi, If your new motor is crystal speed, you don't need pilot and bloop. The photo looks like a Beala crystal motor. All you need is a 4 pin cable where only pins one and four are connected each side. Pins 2 and 3 are not used in this case.
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#8 Joshua Dannais

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Posted 19 June 2007 - 12:23 AM

Thank you Mr. O'Doherty... As for the battery, are there any recommendations and where I can buy one?

thanks
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#9 Bernie O'Doherty

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Posted 19 June 2007 - 05:51 AM

There are many choices. If you want cheapness go to Bescor (google 'em) and get a 12v lead-acid.
They are heavier than NiCad and won't last as long either, but they fit the bill for many people.
Bescor also sells either NiCad or the more advanced Nickel Metal-Hydride. See if they can supply them with 4 pin XLR plugs. If not, do it yourself, it's easy. A soldering iron, solder, cutter pliers, stripping pliers, and the courage of a lion are all that is required.
Cheers, Bernie
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#10 Luke Prendergast

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Posted 19 June 2007 - 07:42 AM

I'd add an inline fuse as well, to protect against a short circuit. A lead-acid battery can output enormous current, enough to melt any camera power cable into a smouldering puddle.
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#11 Joshua Dannais

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Posted 19 June 2007 - 11:05 AM

Sounds good, thanks for all the help guys... hopefully I'll be up and running by the end of the week.
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#12 Clive Tobin

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Posted 20 June 2007 - 09:48 PM

[quote name='Joshua Dannais' date='Jun 18 2007, 10:23 PM' post='178970']
... As for the battery, are there any recommendations and where I can buy one? .../quote]
We have battery belts with a good PowerSonic automatic-cutoff charger for $225. See the website page at http://www.tobincine...com/page10.html . This charges through the reliable XLR plug not the lousy cigarette lighter one.

I am assuming you are in the USA since we are forbidden now to send batteries through the Post Office to overseas, and the other carriers are very expensive.
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#13 Joshua Dannais

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Posted 21 June 2007 - 03:36 PM

Thanks for the info on the battery belt... I have one more question pertaining to the motor, yes it is a beala motor and I know it is capable of "wild" speeds of 6-40fps, but how is this setting selected? thanks
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#14 Joshua Dannais

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Posted 22 June 2007 - 04:35 PM

Thanks for the info on the battery belt... I have one more question pertaining to the motor, yes it is a beala motor and I know it is capable of "wild" speeds of 6-40fps, but how is this setting selected? thanks


please disregard the last post, figured it out.
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#15 Joel Whybrow

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Posted 20 July 2007 - 12:12 PM

Sorry to hijack the thread, but rather than starting a new one, will this wiring configuration be the same for a Arri 16s, i.e, pin1 power pin4 ground?

Also, would 9v work ok for a governer 24fps motor or will it need to be exactly 8v 3.6a?

-Joel
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