I need some advice on powering my servo, I can't find a straightforward answer and I don't want to fry my uno.
My servo is the ls003 http://images.frys.com/art/rebates_pdf/7027241_tds.pdf
This operates at 4.2 or 5v and requires 100-500mA of current.
Now, for what I'm doing I already have the 5v pin occupied but the current draw is small enough I'm fairly certain it could run from an i/o pin if I needed to move it, so my first question is should I bother trying, can the 5v pin supply enough power for my servo? My power source is rated for 850mA. If not, is the best way to power it a 5v battery?
My second question is what current should I use for the signal wire? I don't see it listed in the specs so is it safe to assume it just needs the 5v?
I appreciate any advice.