Hi,
I may be looking for a solution that's too easy to be possible, but here goes.
I want to create a servo like those used on R/C models that will operate a linear positioner and move over a fairly large distance (about 3').
My idea is to take a regular hobby servo, remove the potentiometer and the motor, and replace the potentiometer with a 10-turn pot, and the motor with a larger motor.
In order to handle the higher load of the larger motor, my idea is to take the output to the existing motor, and use it to control another H-Bridge.
My thinking is that this will be easier than creating the servo control electronics from scratch.
I've created a quick and dirty schematic of my idea. It's not fully fleshed out, and is probably over-simplified, but it should give you an idea of what I'm trying to do.
I may be looking for a solution that's too easy to be possible, but here goes.
I want to create a servo like those used on R/C models that will operate a linear positioner and move over a fairly large distance (about 3').
My idea is to take a regular hobby servo, remove the potentiometer and the motor, and replace the potentiometer with a 10-turn pot, and the motor with a larger motor.
In order to handle the higher load of the larger motor, my idea is to take the output to the existing motor, and use it to control another H-Bridge.
My thinking is that this will be easier than creating the servo control electronics from scratch.
I've created a quick and dirty schematic of my idea. It's not fully fleshed out, and is probably over-simplified, but it should give you an idea of what I'm trying to do.
