For the top, I added mounts for a VOC sensor. I also added little grates over the sensor holes and labeling to the underside.
For the box, I enlarged the USB-C hole slightly to fit the cable I have, added a hole on the opposite side to access the SD card, and added some patterned holes to all four sides.
I used the same bottom with no modifications.
Printer Brand:
Creality
Printer:
CR-10S
Rafts:
Yes
Supports:
No
Resolution:
0.2
Infill:
15%
Filament: PolyMaker PLA PolyTerra
Notes:
I used the Hilbert curve pattern to give the top and bottom of the box some detail. For the box itself I used the new fuzzy skin thing to give it a bit of texture as well.
Electronics Assembly
Liz has a great write-up on Adafruit for assembling and getting the CircuitPython code on the device.
The latest code changes that I made to support the additional sensor are in my [portable-air-logger repository on github](https://github.com/dieseltravis/portable-air-logger/), I've also added portable-air-logger.zip but it may not be the latest code.The author marked this model as their own original creation. Imported from Thingiverse.