- #1
benmuskler
- 6
- 0
Hello! I'm completely new to working with arduino and electronics and am currently working on a little project involving a stepper motor. I need to be able to detect in which direction the motor is pointing. In order to do so, I came up with an idea inspired by how potentiometers work. The idea is illustrated in the figure and basically works by measuring the voltage between a reference point and a conductor that moves along a metal ring with high resistance.
The problem with this idea is that I cannot find anything like the metal ring part. I've seen there are resistance wires, but the "resistance per meter"-value seems to be too low as the ring in this case will have a very short circumference (might be wrong, though).
I would be grateful for recommendations either for parts to use, or alternative ideas.
Thanks!
Image: https://postimg.org/image/49nw2mct3/
The problem with this idea is that I cannot find anything like the metal ring part. I've seen there are resistance wires, but the "resistance per meter"-value seems to be too low as the ring in this case will have a very short circumference (might be wrong, though).
I would be grateful for recommendations either for parts to use, or alternative ideas.
Thanks!
Image: https://postimg.org/image/49nw2mct3/