In case your camera does not come with a wall mount solution but has a standard tripod mount nut in its case.
The mount is 12 mm tall and the ¼"-20 UNC nuts in the mini ballheads are usually ~ 5 mm deep. You will need a 12 mm long ¼"-20 UNC hex head screw for the assembly.
The top round sole has 25 mm diameter.
I have uploaded the Fusion 360 source file so you can easily alter the dimensions accoring to your needs.
The author marked this model as their own original creation.