This is a simple mount for a RaspberryPi. The case I made this for was designed by @Squirrelbrain, listed below. You can use is anywhere else you want a simple mount for those cases. I used 2 M3x10 screws with nuts to attache to the existing holes in the case. I added a channel on the back if you are running wires on the back.
Updated: 8-20-2023 v2 tweaked for the rPi-3-B
@Squirrelbrain cases:
The author remixed this model.
Used hole location