#4902383
I bought a complete heavy props light and sound kit for my proton pack and Neutrona wand from eBay.

I know that it is recommended to use the separate 3V battery holder for the sound board, but would it be possible to use a buck converter to convert from the 12V battery source to drop the voltage down to 3V to run to the sound board? If so any recommendations on how to wire up the wiring inside my pack to do this? I had previously been working on modifying a spirit halloween proton pack, but ran across a great deal for a mostly finished resin pack that has a custom made static light kit in it, so I bought it to use instead but knew I wanted to put a better light kit and a sound kit in the pack to replace the static lights in it.
#4902678
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I use the Step Up versions of these to take the 3.7v 18650 rechargeable Li-ion battries to 12v and have never had an issue, so I would trust their step down to work well. The wiring is a simple & laid out on the board. Just use a multi-meter to read the output & adjust with the tiny screw on top till you hit the voltage you need.

http://amzn.to/2Em9cJ1
#4902682
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I've been using these in all of my projects to step down from 12v to 5v and they have worked great for me. Specs say down as far as 3v.

https://www.amazon.com/eBoot-MP1584EN-C ... +converter
#4902761
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Hey everybody, sorry for not getting back to this topic til now.

I wound up buying this buck converter to use.

https://www.ebay.com/itm/Adjustable-DC- ... 2372936877

It seems to do the job without any problems after I got the voltage dialed down to 3 Volts. I hooked 12V into it and ran connections from the output into my sound board. Nothing blew up or let the magic smoke out so I think it's going to work just fine for me.

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