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Hey guys I need help on a project I am working on. I want to open and close a valve over an iternet connection using a jury rigged RC car or plan servo. Any ideas would be welcomed. I need this to open and close a pressurized nitrogen line. Have the programmers to do the networking, but we need to figure out how to connect the servo to a circuit and how much juice to feed it to open and close the valve to specific gas flows.

I am new to servos but do they only move in on direction if so how would I get the servo to open and close a valve with 180 arc or that turns in a circle to close one way and the other direction to open. I know this is feasible to need to get my mind around the problem lol.

Matt