3D printed cases for Pixelblaze and Output Expander

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1

hey all

I made some cases for myself, thought they might be useful to others. Feel free to remix these if you like – I’m including STEP files (links below), so you should be able to edit them.

No guarantees, no warrantees, no promises :wink:

I made this case for a new build for Twisty Maurice – 2 PBs V3, and 8 Output Expanders

IMG_5091
IMG_50911920×1440 256 KB

These are very purpose built cases – I wanted to be able to plug in all the boards to headers w/ header pins. The PB case keeps the antenna in the clear, and gives access to the button. The tops are printed in clear(ish) PETG so the ready lights could be seen. M2 screws secure the case tops, and for the PBs.

The OEs don’t have screw holes – so the case tops are designed to hold them in a snug fit.

Both of these headerpin cases put the ‘case’ part in the lid – makes for simpler 3d printing.

NOTE: they are about 1mm short on purpose – I used VHB tape to tack them onto the breadboards. They sit firmly and securely with the tape, w/o it they wobble.

Pixelbaze Riser Case:
PixelBlaze_HeaderPinOffsetCaseV2.step (110.3 KB)

PixelBlaze_HeaderPinOffsetCase_01
PixelBlaze_HeaderPinOffsetCase_011199×1142 68.6 KB

PixelBlaze_HeaderPinOffsetCase_02
PixelBlaze_HeaderPinOffsetCase_021199×1142 59 KB

PixelBlaze_HeaderPinOffsetCase_03
PixelBlaze_HeaderPinOffsetCase_031199×1142 58.3 KB

PixelBlaze_HeaderPinOffsetCase_04
PixelBlaze_HeaderPinOffsetCase_041199×1142 58.6 KB

Output Expander Riser Case:

OutputExpander_HeaderPinOffsetCase_V2.step (105.6 KB)

OutputExpander_HeaderPinOffsetCase_01
OutputExpander_HeaderPinOffsetCase_011199×1142 63.2 KB

OutputExpander_HeaderPinOffsetCase_02
OutputExpander_HeaderPinOffsetCase_021199×1142 65.5 KB

OutputExpander_HeaderPinOffsetCase_03
OutputExpander_HeaderPinOffsetCase_031199×1142 55.2 KB

OutputExpander_HeaderPinOffsetCase_04
OutputExpander_HeaderPinOffsetCase_041199×1142 59.7 KB

I’m also posting another case design – but new post, as the is one is already long :wink:

tagging @wizard

cheers

-andy

3 Likes
2

Awesome, clean design! Can you show the art piece or photography lighting rig these drive? I’m curious about your massive resistor bus there!!

Edit: oops, it’s all there in the new thread you posted. Looks great!

3

hey @jeff !

the massive output bus came about because I was trying to “roll my own” Output Expanders using Blue Pills. I chatted with @wizard and followed his advice down this very interesting rabbit hole. I built the whole thing around those boards – which as far as I could figure out, have no pullup resistors on them. I built that to deal with any ‘data ringing’ and/or data voltage issues.

I wanted to use the screw post connectors to connect my data plugs to the boards just in case I needed to disassemble the whole shebang, and had the space so figured I’d just make an output bank with the resistors and posts.

short story version: I could not get the Blue Pills to work, but already had the infrastructure built. I know the Output Expanders have incorporated resistors, so it’s all overkill AFAIK, but figured it couldn’t hurt :wink: