Looking for a simple wiring to make a tortoise motor operate in three positions. Motor runs to one end or other for red or green indication, but I have not come up with a simple way to make it stop midway by itself with power still applied ( in other words I tell the signal to go yellow, so the correct polarity is applied to run motor to midpoint and stop even though voltage is still present but now interrupted to motor.) I know that there is a switch deadband that can be used for midway stopping, but need to insure it stops while power is still applied. Then be able to apply power to get motor to red or green from midway stopped poition.
I can come up with some clunky ways but I am sure someone has been down this path before I re-invent the wheel circuit again. Google no help as just diagrams of wiring turnout frogs and crossovers etc but no semaphore.
