THE LOGAS WRITTEN
Every entry below is a disturbance that settled. Each note carries its signature: the shape of the disturbance, drawn until the line runs flat again.
Notes are posted when the decision is made, not when it flatters the lab. Nothing here is edited after the fact; when a claim changes, the change gets its own entry and the old one stands. The drawings the notes refer to are public.
SHOWING 9 / 9
The duty-day toggleHow the site's light-mode palette works, why it is an opt-in rather than a system preference follow, and what the name means.The hardware standardWhy Keystone commits to a public hardware family and what that means for repair in the field.Power budget: HMD-1How the Sentinel HMD-1 power architecture is being sized, and why the constraints are harder than they look.Webbing: the 25mm standardWhy Keystone uses 25mm MIL-spec webbing throughout, and what that choice rules in and out.Console UI: building the configuration interfaceDesign decisions behind the Sentinel HMD-1 web configuration console, local-first, single-file, 68KB uncompressed.Sentinel architecture: single-cable decisionThe reasoning behind collapsing power and data onto a single USB-C connection in the HMD-1 architecture, and the specific numbers that made it viable.Fourth-season design principlesWhat it means to design for the fourth season, and the constraints that follow from taking it seriously.Keystone A03→A04: weight claim downgrade and what changedA03 shipped with a 1,340g total weight TARGET. Physical build of A04 came in at 1,387g. This is what we changed and why we didn't fight it.Keystone layout iteration: why the clamshell wonThree layout variants, two fabrication rounds, and the failure mode that settled the architecture.
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That's the log. Every departure below is live, and every message gets an answer.