Posted 2/2/2014 08:52 (#3656213 - in reply to #3651610) Subject: Re: variable rate controls for "sliding gate" opening
If you are good with a soldering iron and have some electronics, search for voltage to frequency converter circuits. That might work. You also might try a pressure based liquid spray control system and feed the linear sensor output in as the pressure sensor. Some creative thinking will be required for the setup factors in any case.