Simple customizable mount for phone for use as standard GoPro accessory. It’s inspired by many things here.
Default parameters are suitable for iPhone 6 with cover.
Prusa i3 plus
Printed from PLA with supports from 30° slope.
You need some spring or rubber band to make this thing work. Also some thin wire, needle or pin to lock the spring or rubber band in place.
After printing, it is necessary to remove the thin wall on the upper part with GoPro connector with brakable knife. The wall is here only to avoid generating supports inside the element.