Thread: Some USB power measurements
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bhima is offline bhima
2006-01-23 , 05:12
Posts: 79 | Thanked: 1 time | Joined on Nov 2005
#19
Originally Posted by fpp
Googling a little deeper dredged this :
http://www.tekgear.com/index.cfm?pag...elist=1,99,181

I don't know if Bhima's solution will come down to less than 20$, but this looks really tiny (much more compact than anything homemade anyway :-).
That's just about what I'm going to build - though my single board will have a USB connector attached to it. I'm hoping to keep the price at around $20, but on Monday or Tuesday when I finish my first prototype, I'll be more clear on the cost of the parts I need.

It'll probably be only a bit bigger than that device - I'll be buying printed circuit boards by the square inch, so I want it small

I'm currently working on two different approaches:

BYOB == Bring Your Own Batteries. Small device that takes one or two AA's, and you just stick in whatever ones you want.

The other approach would be more fully sealed, perhaps looking like a fat cable. It would have an internal rechargeable, and would probably be charged over USB from another computer.