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Bill
I was down at MBARI (Monterey Bay Aquarium Research
Institue) a few months back. Got a chance to get a close look at their ROV's
Ventana and Tiburon. The Tiburon is rated to 13000 feet and the Ventana is rated
to I believe about 5000 feet. On the Tiburon, every system is encased in oil
except the cameras. The have no pressure problems because of this. I don't see
why a motor controller couldn't be submerged in mineral oil. A simple o-ring
seal around the potentiometer shaft sticking out of the housing should keep the
oil in and the water out. There are PC's that are running completely submerged
in mineral oil. http://www.atomicmpc.com.au/article.asp?CIID=26054
MBARI links
Chip
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