QRpi Raspberry Pi QR mount (with STEP file)

thingiverse

This is a quick release case and mount for a Raspberry Pi, remixed from the "Raspberry Pi 3 B Case" by jayftee. The case is identical to the original with some notable differences. To make the quick release work, I added catches on both sides of the case. There's also a hole for a 40mm fan and both the top and bottom are vented. The QR base has a cable channel that can accommodate several USB cables. Like the original, this uses M2.5 screws, which is a limitation of the Raspberry Pi unfortunately (the holes in the board are not big enough for M3). I did use M3 screws on one of the pictures, but had to widen the holes in the board, which I do not recommend since it could damage the board if not careful. The model uploaded here uses the same M2.5 screws and nuts as Jayftee's original design. Update 9-8-2018 - I uploaded a new version of the "QR-Pi-Case-v3N1--base-top.stl", which is the top part of the mount. The only difference is that I moved the end 0.159mm in to make the fit just a bit tighter. To print this, orient the QR mount parts so they stand vertically and use the minimum of supports. The case parts can be oriented so the flat parts are on the print surface to minimize supports. I used a support interface when printing the case parts. There is an area on the slider bases listed below which requires special care in the slicer: QR-Pi-Case-v3M4S-base-2020-type2.stl QR-Pi-Case-v3M4S-base-2020-type1.stl QR-Pi-Case-v3M4S-surface-mount.stl These parts are all the same except for the mounting options (so pick one). They will need to have supports excluded from the area of the clip (on one end of the part), since supports will keep the clip from being able to flex downward. I used Cura's support blocking feature to do that. I also found that since the original Rpi Case was very tight, and I had to scale by 102% even with PLA (monoprice PLA+), to get the parts the same dimensions as the model. If you need to scale, be sure to scale all the parts the same amount since tolerances are going to be close. I printed this in 0.2 layer height, with 3 walls and 35% infill, with supports everywhere (again note the warning on the parts listed above). To assemble, this will require: 4x M2.5x20mm screws 4x M2.5 nuts 4x M3x12mm screws (or longer depending on the fan and any grill covers used) 4x M3 nuts 1x Spring from a cheap pen 1x 5V 40mm fan And one or two M4 screws and t-nuts if you are going to mount this to 2020 extrusions. To put it together, first install the spring by threading it through the clip. Then attach the QR base to the case using the M2.5 screws. Next, attach the case to the Raspberry Pi using the M3 screws. Finally, attach the fan to the case using the M3x12mm screws. If you want a stronger spring action (which I tested and works pretty well), you can double the spring by threading two of them together before you install it. Doubling the springs will take out some of the travel, but there will still be enough. If you double the spring, be sure to install the M4x8mm mounting screw and M4 t-nut in the front of the mount first, since it will be hard to install later. The STEP files are posted for easy remixing. Please post your makes and likes if you like it. Update 7-14-2019: Uploaded a pair of tall versions: QR-Pi-Case-v4-60mm-fan-1D-TALL-40mm-FAN.stl QR-Pi-Case-v4-60mm-fan-1D8-TALL-60mm-FAN.stl There is a 40mm fan and 60mm fan version. These also have a small notch for running wires. Both the tall versions are untested, but should allow using standard Dupont connectors on the Raspberry Pi I/O pins and then running them out through the notch in the case. If you make one, please post it, and if you have any suggestions or problems please post them in the comments.