Originally Posted by
John_B
Can I jump in here with and an idea or two?.
The problem with using a dc motor is knowing the trim's position a sensor would be needed to send position info to the sim.
A stepper motor has its own driver and the software keeps track of its position by counting the pulses it sends in which direction.
However in my experience steppers can be tricky little buggers to set up as it needs to "step" round for each pulse and not drop/lose any steps or for that matter gain any.
To keep track of a dc motor some form of sensing needs to be added for example an encoder with an opto switch or a magnet and switch (if you have a scrap printer all the mechanics are in there).
Actually driving the trim wheels depends on space and set up gears/belt or even direct drive.
Or have I missed the question?
John