Linear Actuator Encoder (Windynation)
thingiverse
Allows you to discover your position on a powerful yet affordable linear actuator. My resolution is 115 distinct positions across 8 inches, but may be enhanced further. Actuator I used (Tallest one I could design this sensor for on my printer): https://smile.amazon.com/gp/product/B00P4TS694/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Sensor: HC-020K Double Speed Measuring Module with Photoelectric Encoders For Experiment https://smile.amazon.com/gp/product/B00EERJDY4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 I didn't modify it like some people did, and it worked for me with an Arduino anyway.
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