emonPi Case

Print instructions

Case for the emonPi project
https://github.com/openenergymonitor/emonpi

I didn't buy the original case because I didn't like it that much. However, I had no easy way to mount the emonPi while protecting it from the elements.

I set out to design a simple case to house the emonPi PCB and the Raspberry Pi together that would be as snug as possible while looking good at the same time.

Print Settings

Printer: MP Select Mini

Rafts: Yes

Supports: Yes

Resolution: 0.1

Infill: 50%

Notes:

Rotate the STL as needed to print flat against the bed. I recommended to use a brim to keep the flat pieces from warping at the edges.

Supports would be required for the port openings in the case. This prevents the case from warping while printing.

Post-Printing

Just remove some of the excess material (supports). sand or file as necessary to make it fit.

Use 3 screws to affix the emonPi to the bottom layer. Then add the raspberry trying to sandwich everything together.

The SD card will always be available on top.

How I Designed This

I used the openly available CAD drawings of emonPi to design a case around it.

It turned out almost perfect the first try. I had to adjust the size of the lid to be a little thicker so that it would stick better to the case outline.

Update 3/4/2023

Finally got around adding the LCD Screen to it. Find the new files attached.

You will need one of those 2x20 HD44780 LCDs with an I²C backpack. emonPi comes with support for them OOB.

EmonPi also supports an additional momentary switch to move through the different pages or to shut down the PI. I left the model without the hole to let you decide if you want to drill it or not.

In order to attach everything together you need some plastic standoffs to screw into the existing emonPi shield. then you can close everything with more screws. Will post some picture later to explain this better.