3D printed cuvette holder and enclosure

Design methods
We have been using FreeCAD for 3D hardware designs as described in this previous Newsletter. In this project we used the KiCad StepUp workbench to import a 3D model of the Sensor and LED PCBs from KiCad and the A2plus Workbench to create an assembly of the complete enclosure. We also used a 3D model of the PyBadge made available at Adafruit CAD Parts on github.

Design files - cuvette holder
GitHub - iorodeo/cuvette_holder: Hardware design files for cuvette holder
Hardware design files for cuvette holder. Contribute to iorodeo/cuvette_holder development by creating an account on GitHub.
Design files - colorimeter enclosure
GitHub - iorodeo/open_colorimeter_enclosure: FreeCAD design files for new colorimeter enclosure
FreeCAD design files for new colorimeter enclosure - GitHub - iorodeo/open_colorimeter_enclosure: FreeCAD design files for new colorimeter enclosure
Features
- Material: 3D printed black nylon
- Cuvette Holder Dimensions: 54 mm (length) x 32 mm (width) x 43.5 mm (height)
- Fits 12 cm x 12 cm cuvettes (pathlength = 10 cm) e.g. BrandTech cuvettes
- Recessed circular space for a light-blocking cover
- Recessed mounts on either side with tapped M2.5 threads (for mounting the LED and light sensor boards)
- Base flange with 4 mount holes for (optionally) mounting to the enclosure part
Images

