A variable speed drill with a conventional
cord turns out to be a good and cheap option for the locomotion of our mechanical deer deterrent
contraption.
A quick search of E-bay shows that several can be had in the 10 dollar
range, and new ones go for a bit over 20 at the big box stores.
I wonder if a lamp dimmer switch would be strong enough to provide a
variable speed option for drills that only have on and off and nothing
in between?