I'm using a Raspberry Pi in my latest project and I've been looking for a suitable mount.
I don't want a case, because I want access to the GPIO pins, and I'm not 100% sure of what else I'll be adding yet. I'll be using the camera, and probably adding a few buttons and maybe some lights.
There's a lot of cases on Thingiverse, but none of them seem to be exactly what I'm looking for. So I'll make my own! Hopefully some of you with the same needs and constraints may find this useful too.
This mount system consists of the base, and add-on pieces for the camera and some stripboard for prototyping. I've included a picture of the mounting dimensions for those that want to make their own custom add-ons for servos or sensors etc.
Each of the add-ons has relief to access the SD card when mounted on the front.
I use a 0.3mm nozzle for smaller things like this, although 0.4mm will probably work ok. Print the parts in PLA or PETG (I used PETG) at 50% infill, and after cleaning up with a knife run through each hole with a drill. 3.5mm for the countersunk assembly mounting holes, 2.5mm for the pilot holes for the countersunk assembly screws. 2.1mm for the pilot holes to mount the Pi and the stripboard.
The countersunk assembly screws are 3.5mm x 8mm woodscrews. These are used to secure the base to a mounting board, but also to secure the add-on pieces. These are a bit overkill to secure the add-ons but they're cheap and readily availble from DIY stores.
Use M2.5 x 8mm machine screws to secure both the Pi and the stripboard. Put a washer under each one, and let them self-tap the holes.
For ease of use, I've chosen to print little plastic posts to mount the camera. This allows for quick adding and removal, although you might need to trim a bit with a knife depending on how accurate your printer is. If you want something a bit more solid, trim them off with a knife, spot the centre and drill out to 1.6mm, using some M2 x 8 machine screws.
The stripboard mount is sized for a standard 0.1" pitch, with the mounting dimensions being 1" square. That's a small enough size to be able to add to the side without making the whole thing huge, while still being a useful size for buttons and LEDs etc.
I've added a Pi logo to make it look a bit more 'professional' too :-)
Hope someone finds this useful - leave a note in the comments or send me a private message if there are any issues.