The custom Analog Board has arrived from JLCPCB, and we have now printed the complete two-piece enclosure for the master module. This is the first time the large octagonal board and the full-size printed case can be checked together as physical parts rather than CAD geometry.

The Analog Board sits in the lower half of the enclosure. Its eight radial connector positions run around the perimeter, while the central openings leave room for the vertical connections to the upper electronics. The new photos also show the underside of the printed case and the exterior lid, including the raised interface area, ventilation slots and recessed circuit-brain graphic. The print gives us a useful real-world check of the board footprint, mounting locations and access openings.

We are deliberately populating the analog electronics in stages. **One ADS1299 is installed right now.** That device represents the first eight-channel section of the planned 64-channel Analog Board; the other seven converter positions will be populated later. Having one chip installed is an assembly milestone, not a claim that eight EEG channels have already passed acquisition tests.

The immediate electrical goal is to validate this first ADS1299 path: check its supply rails, clock and reference, read its device ID, confirm register write/readback, then capture internal test and a known differential input. In parallel, we need to check the mechanical details that CAD cannot settle on its own: connector mating travel, DB25 cable and backshell clearance, fastener engagement and how cleanly the upper stack closes into the case.

It is exciting to have both the actual analog PCB and the full master-module print on the bench. The next update will focus on measured bring-up results from the single populated converter, and then we can decide when to populate the rest of the board.