I am currently making software to interact with a conductive rubber cord. I am very interested in figuring out the percentage of a stretch of the cord, to determine how the resistance changes.
Stretch the cord 1 cm, see the difference in the resistance:
Stretch the cord 3 cm, see the difference in resistance:
Programmatically, I can tell this change. When I use my hands, I can see the resistance flow change as my pressure increases on stretching the cord. However, as my hands are probably not the best instrument for accurate stretching, I am in need of an alternate machine to do this for me.
Does a such device exist, which can hold one end of this material for me, and pull the other end 1 cm? 3 cm? etc. Since I am a software engineer, and certainly lack in the field of mechanical engineering, is a good approach to take here to use motors and a raspberry pi to possibly create my own stretch machine?