Описание
Lab BOM относится к текущему Jetson Orin Nano prototype. Он ставит model iteration, Linux camera debugging и video pipeline development выше стоимости, питания и weatherproofing.
Functionality covered
- Локально запускает текущее приложение
entrance-observer.
- Захватывает USB UVC video и записывает selected clips.
- Тестирует detection, tracking, direction counting и telemetry upload.
- Тестирует on-demand video sessions через
gate-video-stream.
- Даёт benchmark data for production alternatives.
Bill of materials
| Tier |
Component |
Example part |
Qty |
Rough cost |
Existing note |
Lab recommendation |
| Required |
Edge AI computer |
NVIDIA Jetson Orin Nano Super Developer Kit, 8 GB |
1 |
$249 |
Orin Nano |
Оставить reference platform for model/API development. |
| Required |
Camera |
MOKOSE 4K USB UVC camera |
1 |
$154.50 |
Camera |
Good lab choice: UVC работает с OpenCV, GStreamer и common Linux tools. |
| Required |
Lens |
5-50 mm CS/C mount CCTV lens или camera bundled 6-12 mm lens |
1 |
€43.35 |
Camera lens |
Использовать varifocal только пока unknown entrance FOV. Lock focus/zoom during tests. |
| Required |
Storage |
250 GB M.2 NVMe SSD |
1 |
€23.88 |
M2 SSD |
OS, Docker images, logs, clip buffers и benchmark videos. |
| Required |
Network |
Ethernet or Waveshare AC8265 WiFi module and antennas |
1 |
€0-22.92 |
WiFi antennas |
Prefer Ethernet for repeatable tests; WiFi to reproduce field conditions. |
| Required |
Power |
Official-quality USB-C power supply for Jetson |
1 |
not yet documented |
Add exact part |
Должен покрывать Jetson, camera, SSD и WiFi under load. |
| Required |
Camera mount |
Adjustable 1/4 inch camera wall mount |
1 |
$9.59 |
Mounts |
Быстрая alignment; mark distance, height and angle after tests. |
| Recommended |
Temporary frame |
2020 aluminium extrusion pack |
1 pack |
€40.62 |
2020 Aluminum Extrusion |
Good for lab fixture, not field enclosure. |
| Recommended |
Optical cover sample |
Plexiglass/acrylic sheets |
1 pack |
€8.32 |
Plexiglass |
Test glare, blur, scratches, condensation and cleaning; not production-grade by default. |
| Optional |
Local setup display |
7 inch HDMI touchscreen |
1 |
$47.99 |
Display |
Bench-only. Remove from field/production BOMs. |
| Optional |
Acrylic dev case |
Acrylic case originally noted for Jetson Nano 2 GB |
1 |
€11.36 |
Case |
Treat as incompatible until Orin fit/cooling confirmed. |
Component decisions for Phase 1
| Decision |
Recommendation |
Why |
| Compute |
Keep Jetson Orin Nano as reference. |
Fastest route from Python model code to edge inference. |
| Camera interface |
Keep USB UVC in lab. |
Easy to inspect with v4l2-ctl, ffmpeg, GStreamer, OpenCV and browser previews. |
| Lens |
Use varifocal only for discovery. |
Lab discovers working distance and entrance coverage before fixed lens. |
| Storage |
Keep NVMe. |
Video datasets, Docker images and local buffers exceed small storage quickly. |
| Networking |
Test both Ethernet and WiFi. |
Ethernet isolates camera/model bugs; WiFi reveals retry/bandwidth behavior. |
| Enclosure |
Use fixture, not final enclosure. |
Desk fixture should make camera movement and cable access fast. |
| Power |
Add a real power meter to BOM. |
FPS/W and Wh/day cannot be estimated reliably from datasheets. |
Missing lab items before next build
| Missing item |
Why it is needed |
| USB-C inline power meter or AC wall power meter |
Required for FPS/W and energy benchmarks. |
| Known test video set or printed moving-target fixture |
Makes model changes comparable. |
| USB3 cable same length as planned field tests |
Long or poor cables can cause camera drops. |
| Lens lock or thread-locking method |
Prevents focus/zoom drift. |
| Small fan or thermal probe |
Helps detect thermal throttling. |
| Labels for distance, angle, lens setting and profile |
Makes datasets reproducible. |
Alternatives not recommended for Phase 1 default
| Alternative |
Why not default in lab |
When to revisit |
| Raspberry Pi 5 + Hailo AI HAT+ |
Requires model conversion and Hailo runtime before algorithm is stable. |
Phase 2 side-by-side benchmark or Phase 3 cost-down path. |
| RK3588 NPU board |
Tooling/model conversion less predictable than Jetson. |
If video encoding/media pipeline efficiency matters more. |
| Coral TPU |
Current YOLO-style detector may need major simplification. |
If very small telemetry-only model is trained. |
| Smart/IP camera with onboard AI |
Vendor lock-in and less model control. |
Long-term production research after count logic/dataset stabilize. |
Estimated lab cost
Because current notes mix USD and EUR, keep totals as planning ranges:
- Required documented USD items: $413.09 (
$249.00 + $154.50 + $9.59).
- Required documented EUR items: €90.15 (
€43.35 + €23.88 + €22.92) before fixture/cover.
- Recommended fixture/cover EUR items: €48.94 (
€40.62 + €8.32).
- Optional bench/debug items: $47.99 + €11.36.
At a rough 1:1 USD/EUR planning rate, current lab prototype is about €550-650 before shipping, taxes, power supply, cables, power meter and assembly time.
Exit criteria
- All required parts documented with links or substitute rules.
- Camera runs for several hours without USB resets.
- Jetson processes reference clips at target FPS profile.
- Telemetry and on-demand video can be demonstrated from same hardware.
- Power and thermal measurements recorded so Phase 2 does not inherit unknown energy risk.
