I am trying to maintain 10" of water, pressure, inside a 2" ID tube, with a simple butterfly valve. ----- Original Message ----- From: "Ray Gallant" To: Sent: Tuesday, March 04, 2003 9:12 AM Subject: Re: Need motorized motion primer > What type of valve and or application? > > ----- Original Message ----- > From: "John Pearson" > To: > Sent: Tuesday, March 04, 2003 1:17 PM > Subject: [EE]: Need motorized motion primer > > > I need an thumbnail education on motorized motion options. > > I need to control a small valve. It will need to be constantly adjusted back > and forth to maintain a precise pressure within the tube it will be mounted. > > I figure I have 3 basic options: Servo motor, stepper motor, and gear-drive > motor (forward & reverse movement) > > Range of motion would be <= 90 degrees. > > I know a little about servos. Have done some programming on them. The > others, no experience or knowledge. > > What would be the easiest and least expensive, programming and hardware > wise? > > Any other options? > > Thanks > > John > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics