it uses 100microhenry inductor. it its not something made up of thick copper wires, it will burn.

if u r not sure how to build these, buying something readymade is the best thing u can do.

 

Would this work?

If the device works at all, it will probably serve your purpose perfectly. It is exactly what you need, ready made. I have recently experienced faulty modules from amazon, so I would order with caution; read the reviews. Are people calling it a dud? Its only a few bucks so not really a big gamble. I would purchase it and try it out.

 

I've found the perfect solution! Apparently the prefabbed USB chip doesn't accept 6v, or 5, So I'll use an XRP6272 with a bypass-able 1N4004 diode so it can use alkaline or NiMH. Is there anything wrong with this? Or should I go ahead and order it?
By the way, there are no reviews on the prefabbed chip, and there is a $2 restocking fee if returned...

 

I think I'll just get a different, better usb chip, and a diode... It seems so much easier.

 

If it isn't on ebay they don't make it.

http://www.ebay.com/itm/DC-DC-Auto-...234?pt=LH_DefaultDomain_0&hash=item25856524ca