designing slider controller for controlling tilt angle of propellors I've been working on designing a tilt rotor. The propellers need to tilt from straight up to horizontally forward - 90 deg to 0 deg. I need to design the tilting mechanism, but more specifically at the moment, what I'm trying to figure out, is the control mechanism. I want to use a slider controller, where all the way forward = 0 deg = horizontally forward = full forward thrust, and all the way back = 90 deg = vertically up = all power devoted to lift force. I know that part of this involves mechanical engineering, but like I said before, what I'm concerned about at the moment is the actual electronic control mechanism. And I guess I should maybe ask in the M.E. section if this will work: I want to use a system of a gear box (and a separate motor/actuator to rotate the differential) to tilt the rotors. But what I want to ask the E.E. community specifically is where I would get the slider control system to control the tilt angle, or if it cannot be obtained, how to design it? Thanks so much. - Jagz - Edit: After some research I realize I need to use a servo system.