Hey. I'm new to the boards and to this forum. im not sure if this is the proper board, if not feel free to move. I have an arduino NG and i love it. i successfully made a KAP rig and it is sweet. I recently saw this video http://www.engadget.com/2007/09/04/build-your-own-underwater-rov-for-250/ I am looking to do something similar with arduino. In would definitely characterize myself as leaning more in software then hardware so i have one question about the hardware that would go into an arduino ROV. Specifically my question is what kind of motor would i be able to use underwater or modify to use underwater thats powerful enough to do what the one in the video does. And i want to control it with the arduino. How would i do this? Obviously the output from the actual device is not enough to power a hefty motor. Would i use a transistor for this? if so would it still work with the analog out's on the arduino so i can control speed? thx
modified** oh, and what kind of battery would i use to do this? and would i have to have separate batteries for the motors and the arduino? and how would i go about a camera?