I'm currently building a lift for scientific purposes. It's driven by a stepper-motor with a high transmission.
As it is my first project with a stepper motor, i realized afterwards that it isn't all too accurate, i think it is loosing steps under high load.
So basically i have to measure the distance between two panels, one of them is going up and down.
The distances the sensor would have to measure are between 5 and 30 cm and i aim for an accuracy around +- 0.2mm, the smaller the better.
I came across this one from sharp though i am not sure if it is the right one, because i didn't find any data on its accuracy. http://www.sharpsma.com/webfm_send/1205
Does anyone have experiences with similar requirements?
Would be grateful for your suggestions.