Docs

Every .md in this repository, compiled by mdsvex. Hardware chapters first, then the Arrow extract, then in-flight OpenSpec changes.

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Hardware

Sim 3090 → T4000 translation fractal1 RTX 3090 is the slow swap emulator of a resident-30fps pipeline. CUDA cores are the wrong axis. Derate bandwidth-bound fps ×0.30, CUDA-core filters ×0.13. 30 fps lab SKU: RunPod PRO 6000 96 GB — no derate to T4000.Pipes Cameras Thor speaks CSI-2, not GMSL. Body on the box is CSI. Sats are GMSL2, PoE H.265, or a cine HDMI/SDI body. Cable plant, not picture quality.Compute Carrier Lab brick is the AGX Thor Developer Kit (T5000). Production ceiling is the T4000 SOM — 64 GB, 1× NVENC, 70 W default — unless satellite count forces T5000.Shell Enclosure First article wraps the AGX kit, two-part resin for an Anycubic bed. Resin is a fit-check, not a heat sink. Production body is metal — the radiator.Plant Interconnect Hybrid fabric: body CSI/GMSL into NVENC, sats PoE H.265, lens /i as a second stream. HEVC bring-up fits 5GbE.Cooke /i Lens metadata Frame-accurate /i (or LDS / XD / EF electronic) from every camera, written as JSONL next to picture. Maps live on the NAS, not per frame.Stages 0–19 Model map Index of which job runs on Thor vs the 6000. Thor resident set stays ≤ ~40 GB. If the 6000 is off, stages 0–8 and 19 still complete.Watts Power T4000 default 70 W, throttle at 90 W. If power sags: drop AI, never record. Two PoE+ sats ≈ 60 W at the PSE. Do not power Thor from the switch.Heat Thermal TDG-12271-001 v1.3. TTP max 75 °C. 70 W fanless in a cine envelope is not honest. Body-as-radiator ~40 W still air; 70 W AI wants heatpipes to a real radiator and at most one slow fan. Measure TTP before metal CAD.Glass + silicon Sensors Bring-up count is 1 body + 2 satellites at 4K30. Body is native CSI/GMSL. Sats are PoE H.265 with Cooke-class metadata, not P-iris stubs.Buy brief Shopping Not a spec. Blackmagic is a cinema body (path B), not a CSI science project. T4000 SOM, AGX kit, and carrier options with street prices as of 2026-09-01.Numbers Stream budget Working haul is ~100 Mbps per 4K30 HEVC. T4000 HQ encodes 2× 4Kp30, not three. QSFP28 is independent 25G lanes, not aggregated 100G.

References

Sources References Where the Arrow datasheet lives, and how it was ingested (pdf2md, text-based, 59 pages).Datasheet T4000 extract Facts from NVIDIA DS-11945-001 v1.4: 1536 CUDA, 64 GB, 1× NVENC, 3× 25G, no CAN, no 3.3 V SV. The SOM, not the kit.

Jetson Thor modules datasheet (PDF) · Thermal design guide TDG-12271-001 v1.3 (PDF)

Repo notes

Repo Agent notes Working rules for this tree: what is already decided, HEVC, /i sidecars, beads prefix aicam.Index Hardware docs This repo is the camera body. Product ground (vision, pipeline, modes, models) lives in web3d-space. Do not fork it.OpenSpec OpenSpec Capabilities: hardware-kit, cartridge-runtime. Changes live in openspec/changes/<id>/. Fold updates openspec/specs/<cap>/spec.md.

OpenSpec

In-flight changes and the living hardware-kit spec. Prefer the changes index if you want them grouped.