So I've got my cousin in town and I'm trying to suck his brain of all his juicy robotics engineering knowledge. We settled for buying a cheap-ish ($30) "Donzi" boat with a dual motor hydro-propulsion type system. The board reads "New Bright 741A" if anyone's had one of these.. Anyway, we dropped it in the water and boy howdy is this thing slow slow slow. Clearly unacceptable, we tried boosting the voltage (transmitter runs on 2 AAs, boat on 3 AAs but we got better response with only two for some reason) but that didn't really give much back. So we started thinking, what about using the signals that controlled the motors (forward, reverse, left/right) as control voltage to a couple 9v batteries? The motors responded quite well after replacing the top caps (not capacitors, the actual plastic top on the motors. Turns out the connections were very bad/cheap/etc) with those from spare junked motors lying around, and we're thinking either using a bipolar op amp on either side or possibly transistors?
Any opinions, advice, etc is welcome. Seems like the bipolar op amp is the way to go, but this is fairly new territory for me and he "sorta" remembers these days in college..
Thanks, sages.
Any opinions, advice, etc is welcome. Seems like the bipolar op amp is the way to go, but this is fairly new territory for me and he "sorta" remembers these days in college..
Thanks, sages.