I originally made this box so I could mount a TOF sensor on my K40+ Laser (for focus assist), however the TOF isn't accurate enough for this use. 

It is a box to hold an RP2040 with display, a button and an external i2c sensor. This could have many uses, least of all a tester for i2c devices :)

Printed in PLA, no supports are required. The board and display and button are held in place by the base when it is screwed on to the box.

I have included the base to mount on the k40 along with a more universal base with two mount points. Hopefully it obvious how it goes together but there is an image of the parts in the box before being wired up.

The button used is a pcb mount push button.