Retracting a cylinder?
Hello. I was thinking about this for a while, and I'm still kind of stuck as to how it works. I've heard that it's possible to retract a cylinder without using some kind of motor "rewind" mechanism; is this true? Also, how does the programming for this work? This might not be the right forum for that last question, but does this mean that the button I program it to will have to be held down for the cylinder to fully extend, and then once it's let go, the cylinder automatically retracts?
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