Camera Station Setup Guide

1

Equipment List (Bill of Materials)

Check items as you gather them. Progress is saved automatically. Click any item row to toggle.

Compute & Control

NVIDIA Jetson Orin Nano Super 8GB

Main compute unit — runs AI inference, camera management, and edge processing

$249nvidia.com →

iPad Pro (M4) or any tablet

Operator console — accesses Admin Console UI at rep1-admin.local

Operator-provided

iPhone 15 Pro

ID Station / Check-in — face enrollment and ArUco marker scanning

Operator-provided

WiFi 6 Router — TP-Link AXE5400 or similar

Local area network — no internet required. Creates the REP1-FIELD network.

~$80–$150

USB 3.0 7-Port Hub (powered)

Connects all Cam Link 4K adapters to the Jetson — must be powered/active hub

~$35–$60

Cameras (×5 GoPro Rig)

GoPro HERO 13 Black × 5

Primary capture cameras — 240fps 1080p for precise split-time analysis

$399 each · $1,995 totalgopro.com →

GoPro Media Mod × 5

Required for HDMI output. Slides onto HERO 13 — exposes full-size HDMI port for Cam Link.

$79 each · $395 totalgopro.com →

Elgato Cam Link 4K × 5

HDMI → USB capture adapters — each converts one GoPro HDMI feed to USB video device

$129 each · $645 totalelgato.com →

Mounting & Power

Heavy-duty tripod × 6

One per GoPro + one for iPhone check-in station — must support 3–4 ft waist height

~$40–$80 each

Sandbags × 6

Wind and tip protection for outdoor events — one per tripod leg base

50 ft extension cord × 2

Power for Jetson and router at field — use 14-gauge for outdoor use

10,000 mAh power bank × 2

GoPro backup charging during event — keep in event bag

Athlete Identification

ArUco markers — pre-printed, laminated (60+ per event)

Print from: Admin Console → Check-In → Print Markers. Use cardstock, then laminate. Minimum 4"×4" size.

Velcro strips

Attach markers to jerseys/bibs — between shoulder blades for best camera angle

Registration tablet stand

Check-in table setup — holds iPad for queue management and athlete lookup

Estimated Kit Cost Summary

Item	Qty	Unit Cost	Total
NVIDIA Jetson Orin Nano Super 8GB	1	$249	$249
GoPro HERO 13 Black	5	$399	$1,995
GoPro Media Mod	5	$79	$395
Elgato Cam Link 4K	5	$129	$645
Heavy-duty tripods	6	~$60	~$360
WiFi 6 Router	1	~$120	~$120
Powered USB 3.0 Hub	1	~$50	~$50
Accessories (cables, sandbags, power banks, etc.)	—	—	~$179
Full 6-Camera Rig Total			~$3,993
1-Camera Pilot (Jetson + 1 cam setup)			~$1,100

2

Phase 1 — Pre-Event Setup

Phase 1 · 24–48 hrs before

Complete these steps at home or office before the event day. Skipping pre-event prep is the #1 cause of field delays.

1

Charge Everything

Fully charge all hardware before leaving for the event.

GoPro batteries — 2 per camera recommended (10 total)
iPad Pro and iPhone 15 Pro to 100%
Jetson Orin via wall adapter (do not rely on USB-C alone)
Both 10,000 mAh power banks to full

2

Configure GoPros

Apply these settings to every HERO 13 Black before the event:

Video: 1080p Superview, 240fps (use 120fps for the 4K overview camera)
Stabilization: OFF — HyperSmooth causes latency that breaks frame timing
Protune: ON — enables manual ISO control and flat color profile
White Balance: Auto (or lock to 5500K for consistent outdoor daylight)
ISO Limit: 1600 max — prevents motion blur in high-ISO noise reduction

3

Flash Jetson SD Card

Download the Rep 1 Exposure Edge Agent image from app.rep1.io/downloads. Flash to a 64 GB+ microSD card using Balena Etcher (free). Insert into Jetson — first boot takes approximately 4 minutes while the system expands the filesystem and starts services.

4

Pre-Load Athlete Roster

Log into app.rep1.io → Events → select your event → Import Athletes. Upload a CSV (name, phone, position, school) or add manually. Assign ArUco IDs to each athlete in the portal — this links the printed marker number to their profile.

5

Print ArUco Markers

Admin Console → Check-In → Print Markers. Print on cardstock (not regular paper). Laminate each sheet. Number the back of each marker to match the athlete assignment. Minimum print size: 4"×4". Prepare at least 60 for a full event, plus 10 spares.

6

Test Network at Home

Power on the Jetson and router together. On your iPad, open a browser and go to rep1-admin.local (or 192.168.1.100). Verify all 6 camera slots appear in the feed grid — plug in USB webcams if you don't have all GoPros available yet. Each feed should show a green "Live" indicator. Confirm the Admin Console roster matches your imported athletes.

7

Calibrate AI Timing Baseline

Run 3 staff members through the 40-yard course at your practice space. Admin Console → AI Settings → Run Calibration. The system calculates its frame-to-distance ratio using the known 40-yard distance. Calibration takes about 2 minutes to process. Store the calibration profile to the event — it will be applied automatically on event day.

3

Phase 2 — Field Setup

Phase 2 · 90 min before start

Camera Placement Diagram — Top-Down View · 40-Yard Dash Lane

iPhone 15 Pro (Check-in ID)

GoPro HERO 13 (Timing camera)

Jetson Orin + Router (Sideline compute)

Cable runs (HDMI→Cam Link→USB)

Camera orientation: Mount all cameras perpendicular to the athlete's running path — not head-on. Perpendicular angles give the AI the cleanest frame-by-frame position data for split-time calculation.

1

Layout Tripods per Diagram

Place tripods at: check-in area, 0 yd (start), 10 yd, 20 yd, 40 yd (finish), and one elevated overview position behind the finish. Set all camera heights to 3–4 ft (waist height) for optimal ArUco marker detection. Confirm all cameras face perpendicular to the lane — not angled toward the athlete's path.

2

Mount GoPros + Media Mods

Slide each Media Mod onto the GoPro (snaps in place from below). Connect: GoPro HDMI out → Cam Link 4K → USB-C cable → USB hub port. Secure every cable connection with gaffer tape — field vibration and wind can loosen HDMI connectors mid-event. Label each Cam Link 1–5 matching its camera position.

3

Power On Jetson

Connect the Jetson power adapter. Wait for the green LED (approximately 90 seconds). SSH into the device or connect an HDMI monitor, then run: sudo systemctl start rep1-agent. The agent will initialize camera detection automatically within 30 seconds.

4

Connect All Devices to Router

Jetson connects via ethernet cable to the router (preferred). iPad and iPhone join WiFi network REP1-FIELD (password: rep1field2026). No internet connection is required — all AI processing runs locally on the Jetson. The router only manages local device communication.

5

Open Admin Console — Verify All 6 Feeds

On iPad, navigate to rep1-admin.local (or 192.168.1.100 if mDNS is unavailable). Verify all 6 camera feeds appear in the grid. Each feed should display a green status dot. If any camera shows gray/offline, see Troubleshooting → "Camera feed not showing."

6

Set Camera Zones

Admin Console → Camera Zones. Assign each of the 6 feed slots to its zone: Start Line (0 yd), 10 yd Split, 20 yd Split, 40 yd Finish, Overview, and Check-in iPhone. Zone assignments tell the AI which split time each camera is responsible for measuring.

7

Set Minimum Confidence Threshold

Admin Console → AI Settings → Min ID Confidence. Set to 75%. Clips where athlete identification confidence falls below 75% will automatically route to the manual review queue rather than auto-approve. This prevents misidentified clips from going to the wrong athlete profile.

8

Run a Full Test Athlete

Walk one staff member through the complete drill as an athlete:

Scan face or ArUco marker at iPhone check-in station
Attach ArUco marker to back of jersey
Walk/jog the 40-yard lane
Confirm: clip triggered on at least 3 cameras → clip appears in review queue → approve clip → confirm athlete profile is updated

If anything in this chain fails, resolve it before athletes arrive.

4

Phase 3 — Event Day Operations

Phase 3 · Live Operations

Check-In Station (iPhone)

Open Rep 1 Exposure Check-In app on iPhone
Scan athlete face or scan their ArUco QR assignment sheet
Assign the printed ArUco marker — stick to jersey back, centered between shoulder blades
Face-enrolled athletes: no marker required after initial scan
Confirm athlete shows "Checked In" in Admin Console → Roster

During Drills

System runs automatically — no button presses needed
Operator monitors Admin Console → Camera Feeds for offline cameras
Review queue: approve clips with ≥80% confidence automatically
Flag unusual clips for manual review
Athletes and parents are notified via SMS automatically if phone number is in their profile

Post-Event Quick Export

Admin Console → Events → Export CSV
Exports: timing data, clip list, and scout view stats
Send to event organizer immediately after last drill
Athletes receive their profile link via SMS within 10 minutes of export

Monitoring Checklist

Check Jetson CPU temp every 30 min — alert if above 80°C
Verify GoPro battery levels — swap if below 20%
Check upload queue doesn't exceed 50 pending clips
Confirm router is broadcasting — re-boot if any device drops

⚠

Something went wrong? Jump to Troubleshooting below for step-by-step fixes for all common field issues — camera feeds dropping, AI confidence failures, Jetson overheating, and upload queue issues.

5

Phase 4 — Tear Down

Phase 4 · ~30 min

Do not power down until the upload queue is clear. Powering off the Jetson with pending clips can corrupt the upload buffer and cause data loss.

1

Wait for Upload Queue to Clear

Admin Console → Upload Queue. Wait until the pending count reaches 0. On good WiFi, this takes 5–15 minutes after the last drill. Do not begin tear down of any cameras or the Jetson until the queue is empty.

2

Force-Sync if Queue is Stuck

If the upload queue has been stuck at the same count for more than 5 minutes, go to Upload Queue → "Force Sync All". This bypasses the incremental queue and pushes all pending clips directly to Azure Blob Storage. Requires at least minimal internet connectivity from the Jetson.

3

Export Local Backup

Admin Console → Events → Export Full Backup (JSON). This saves a complete event record — timing data, clip metadata, athlete list, and confidence scores — to the Jetson's SD card as a redundancy copy. Copy this file to a USB drive as well if possible.

4

Power Down in Order

Always shut down in this sequence to avoid data loss:

GoPros — press and hold power button until off
iPad — close Admin Console browser tab, then sleep
iPhone — close Check-In app
USB hub — unplug from Jetson
Jetson — SSH in or use monitor and run: sudo shutdown -h now. Wait for green LED to go off before unplugging power.
Router — power off last

5

Coil and Pack Cables

Coil all USB-C and HDMI cables using the over-under technique to prevent kinks and cable memory damage. Store each GoPro in its padded protective case. Wrap Cam Links in their original pouches or small zip bags. Keep all cables labeled for next event setup.

6

Check Battery Status for Recharging

Note any GoPro batteries, power banks, or device batteries below 20% charge. Charge all low batteries before the next event — low GoPro batteries cause automatic framerate drops to 60fps that break timing accuracy.

6

Camera Placement Quick Reference

Standalone reference for printing. Laminate and keep at the setup crew bag.

Camera Positions at a Glance

Device	Position	Height	Angle	Frame Rate	Zone
iPhone 15 Pro	Before start — check-in area	5 ft (face height)	Front-facing	—	ID / Check-in
GoPro 1	0 yd — start line	3–4 ft	Perpendicular	240 fps	Start Explosion
GoPro 2	10 yd mark	3–4 ft	Perpendicular	240 fps	10-yd Split
GoPro 3	20 yd mark	3–4 ft	Perpendicular	240 fps	20-yd Split
GoPro 4	40 yd — finish line	3–4 ft	Perpendicular	240 fps	40-yd Finish
GoPro 5	~60 yd back — elevated	6–8 ft	Wide angle toward start	120 fps	Overview

7

Troubleshooting

Click any issue to expand the cause and fix.

!

Camera feed not showing in Admin Console ▾

Cause

Cam Link not detected by Jetson — usually a loose USB connection at the hub or unpowered hub dropping the device.

Fix

Check USB connection at hub. Try a different USB port on the hub. Run lsusb on Jetson to confirm the Cam Link appears in the device list. Restart the agent: sudo systemctl restart rep1-agent

!

Face recognition confidence always below 50% ▾

Cause

Poor lighting at the ID station, athlete not centered or too far from camera, or insufficient enrollment photos.

Fix

Add a battery-powered LED ring or panel facing the athlete's face. Ensure athlete stands 18–24 inches from the iPhone. Re-enroll using 5 selfie angles (not just 3). Check that the iPhone lens is clean and the room is not backlit.

!

GoPro video is choppy or laggy in feed ▾

Cause

GoPro battery below 15% (automatically reduces framerate to conserve power), or Media Mod HDMI port not fully seated.

Fix

Swap the GoPro battery. Re-seat the Media Mod by firmly pressing it until it clicks. If choppy behavior persists, reduce recording to 120fps — run sudo systemctl restart rep1-agent after changing settings.

!

Jetson CPU above 85% or temperature above 80°C ▾

Cause

Too many simultaneous AI inference models running, or the Jetson is in direct sunlight without ventilation.

Fix

Enable the fan and max clocks: sudo jetson_clocks --fan. Reduce load by disabling face recognition for non-enrolled athletes (ArUco-only mode). Shade the Jetson from direct sun with a small canopy or cloth. Target operating temp is below 70°C.

!

ArUco marker not detected ▾

Cause

Marker obscured by jersey wrinkles, viewed at too sharp an angle, printed too small, or adhesion has loosened.

Fix

Use markers at least 4"×4". Re-attach with fresh Velcro and press flat. Run detection test: python3 /opt/rep1/tools/aruco_test.py. Ensure cameras are perpendicular and markers are clearly visible at 3–15 ft range. Avoid shiny laminate if detection rate is low.

!

Upload queue stuck — clips not reaching Azure ▾

Cause

WiFi signal too weak at the Jetson location, or the Azure Blob Storage endpoint is temporarily unreachable.

Fix

Move the router closer to the Jetson, or run an ethernet cable from the Jetson directly to a mobile hotspot. Test Azure connectivity: curl https://strep1prototype.blob.core.windows.net/. Use "Force Sync All" in the Upload Queue if clips are stalling individually.

!

Athlete profile not updated after clip approval ▾

Cause

Cosmos DB write lag (usually resolves in 30–60 seconds), or the session auth token has expired mid-event.

Fix

Hard refresh the athlete profile page (Cmd+Shift+R / Ctrl+Shift+R). Re-approve the clip from the queue. If profiles continue to not update, check Admin Console → System Health → Azure to see if the Cosmos DB connection is healthy. Re-login if the auth token indicator shows expired.

!

AI split times differ significantly from manual stopwatch ▾

Cause

Incorrect camera zone assignments, uncalibrated distance markers, or cameras not precisely perpendicular to the athlete path.

Fix

Verify zone assignments in Admin Console → Camera Zones. Re-run AI calibration using a known 4.5s test run. Confirm each camera is exactly perpendicular (use a phone compass if needed). Acceptable AI vs. manual variance is ±0.05 seconds — anything larger indicates a calibration or zone issue.

8

Quick Reference Card

Print this card, laminate it, and keep it at the event table for fast operator reference.

Rep 1 Exposure — Field Reference Card Print & Laminate · v1.0

WiFi Network	`REP1-FIELD`
WiFi Password	`rep1field2026`
Admin Console URL	`rep1-admin.local`
Jetson IP Address	`192.168.1.100`
Start agent	`sudo systemctl start rep1-agent`
Check agent status	`sudo systemctl status rep1-agent`
Restart agent	`sudo systemctl restart rep1-agent`
Enable fan (overheating)	`sudo jetson_clocks --fan`
Power off Jetson	`sudo shutdown -h now`
Upload force-sync	Admin Console → Upload Queue → Force Sync All
GoPro settings	1080p · 240fps · Protune ON · Stabilization OFF
Camera zones	Start, 10yd, 20yd, 40yd, Overview, Check-in
Min ID confidence	75% (flags below for manual review)
Support email	support@rep1.io