Mount for 30x30 aluminium profile compatible with GoPro / Modular Mounting System

This is the part for 30x30 mm aluminium profile which can be used with Modular Mounting system by yyh1002. https://www.thingiverse.com/thing:2194278

There are 2 holes for M6 bolts.

How to reuse your old smartphone as a 3D printer controller
http://nomiotic.blogspot.com/2018/01/reuse-your-old-smartphone-as-3d-printer.html