Docs
Design notes
The engineering behind the plans, as written in the design repo. Notes marked v0 describe the earlier, non-electrical prototype.
ArchitectureThis is the visual prototype: a knitted beanie over a PETG shell lined with 16 curved tiles that carry 1,024 gold 3 mmBoardsThe functional tile . The decorative v0 tile is unchanged; this replaces it whenShell v1The PETG shell that carries the 16 functional tiles (EXO-410 contact board + EXO-420 controller board, seeHubOne per helmet. It feeds 16 tiles over the 12-pin FPC and links the helmet to aSourcingResearch date: 2026-10-27. Nothing was ordered and no supplier was contacted.Footprint checksChecked 2026-10-27 against exo/pcb/footprints.py and exo/pcb/footprints.json (the two match: the JSON is exactly whatBuild (v0)The whole build is a single milestone, M1. It ends with a wearable, photographed helmet and the fabrication footage.Electronics roadmapThe aim is the simplest architecture that scales to 1,024 channels without 1,024 wires leaving the head. DigitiseBOM (v0)Prices are US retail as found in October 2026. Verified means the price was read on the listing itself.CNC placerThe placer turns a stock 3018 desktop CNC into a ball pick-and-place machine. It presses 1,024 Ø3 mm brass balls