This is the enclosure for an open source speedometer for motorcycles that I am working on.
The speedometer uses a 20x4 hd44780 character LCD for a display, and is powered by an Arduino nano. Various other small breakout boards make up the rest of the components (power, speed sensor, etc). I've attempted to keep the enclosure as small as possible.
For mounting, any Trailtech Vapor mount should work, since this has the same bolt pattern. Such mounts can be found here or thingiverse.
Links you will want if you intend to build one of these:
The author marked this model as their own original creation.