4KNeural recordingXie–Luan labs · Team design review
LibraryMeetingsQuestions & answers15 October 2026

System overview

4K neural recording

Overview V4Two parallel approaches

System architecture
Loading compact assembly…
ISOMETRIC
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Earlier assembly concept · preserved geometryHistorical XEM8310 shapes · open subsystem tabs for current boards

Architecture & responsibility

From the headboard to the host.

Two approaches, developed in parallel

Both remain under development.
A Custom FPGA approach

ASIC boards → new LDO + custom FPGA → cabled XEM8305 interface → PC

FPGA V41 + separate LDO V5, or combined FPGA / LDO V7. B Parallel alternative · direct-LDO carrier

ASIC boards → existing LDO board → carrier V17 → XEM8305 → PC

The carrier connects directly to the existing LDO board.
Design review · source notes

System overview

Model provenance and presentation scope

The supplied stacked_headboard_compact_B_v1(1).stl is preserved byte for byte. The browser uses all 650 source triangles. Camera animation changes the view, not the model.

The former B bridge region and C lower board are grouped as one routing/LDO subsystem per Howard’s September 22 instruction. The source model is not edited. The overview receiver stack retains earlier explanatory geometry; current FPGA, LDO and carrier views are shown separately in their subsystem tabs. The dated adapter view is historical; the adapter detail view uses derived Opal Kelly XEM8310 and BRK8310 models and labels the proposed interposer separately. Neither view proves mating fit. The R2 direct-carrier option and earlier KR260 concept remain in dated history.

Names are reported workstream assignments from the repository’s September 18 follow-up. They do not replace its separate, still-unassigned layout reservation and reviewer records.

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Latest project updates

Updates

Two parallel approaches

The custom FPGA approach and the XEM8305 direct-LDO carrier are now shown separately. The direct carrier uses the existing LDO board. The overview layout now adapts to the screen.

Compare the approaches →

Current board previews and files

FPGA V41, separate LDO V5, combined FPGA / shared LDO V7 and direct-LDO carrier V17. Native views, schematics and complete KiCad projects are available in their sections.

FPGA V41LDO V5 / V7Carrier V17
14 October review presentation ↗Project library ↗