Mounting bracket to use the GoPro Hero 7 in a DJI Osmo Mobile 2.
Slots in the counterweight are for coins. Four quarters seemed about the right level for balance. Six quarters was too heavy for the Osmo to keep up.
Combined file is gopro_osmo_mobile_mount.stl or tinker.obj, I've also split out the back plate and main assembly as separate stl files. Or, of course, you can go to TinkerCad and modify at your whim.
Downside, the wide-angle lens on the GoPro picks up the bracket on the mobile handle. If I push the camera any further out, it requires too many counterweights and the whole assembly becomes too heavy. Well, that, and of course you can't use any of the app features you'd have if you were using it with your cell phone.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/a09Nr3Z56ec
Printed at 50% infill just to get more density to the counterweight.