Mini Linear Actuar
A simple linear actuator design that uses a mini motor with an M3 screw threaded shaft.
Motor: https://www.amazon.com/gp/product/B07555C17Q/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Hex standoff: https://www.amazon.com/gp/product/B09S9YXHJQ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1