Work date:12–13 September 2026  

The original Altium assembly STEP was approximately 123 MB and contained far more detail than an enclosure needs. Individual resistor, capacitor and IC models made the file heavy without improving the mechanical result. We simplified the assembly while retaining the geometry that controls fit:

- PCB outlines and thickness references;
- mounting-hole locations;
- DB25 bodies and access directions;
- vertical board-to-board connectors;
- external USB, Ethernet and button locations;
- conservative component-height envelopes.

The resulting enclosure uses two printed pieces and measures approximately 221 × 221 × 61.5 mm. The octagonal Analog Board sits in the bottom. The Digital EEG, Top Power and Top I/O boards attach to the lid and lower vertically onto the analog section.