Overhead cameras that auto-score bar cornhole and stream the score
Software: $29–$49 per venue per month
Concept, not for sale yet. Tell us if you want it; that decides what we build.
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How it fits together
Scroll or tap a part. Press “See the 3D CAD design” to watch the model, built from our CAD, light each part up and show how it connects.
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01
The whole CornholeCam
Ceiling cameras look down at each cornhole board. The hub finds every bag, scores each round and shows it on the bar TV.
02Brain
Venue hub: Raspberry Pi 5 + AI HAT+
The brain, in a separate hub box (not shown): it runs the ccd-score (hub scoring service) program
03
Camera Module 3
Looks straight down at the board from the ceiling
Raspberry Pi Zero 2 W · CSI-2 ribbon cable · 1080p video
04
Camera head computer
Streams video and spots when a throw has settled
Venue hub: Raspberry Pi 5 + AI HAT+ · Cat6 Ethernet to PoE switch · H.264 video, motion events
05
PoE HAT
Brings power and Ethernet to the head on one cable
Venue hub: Raspberry Pi 5 + AI HAT+ · Cat6 cable (802.3af PoE) · Power and network
06
Hole sensor (optional)
Confirms a bag dropped through the hole
XIAO ESP32-C3 · I²C and interrupt pin · 8x8 distance zones
07
Hole sensor controller
Sends hole pulses to the hub
XIAO ESP32-C3 · Wi-Fi (hub access point) · Hole pulse events
08
All connected
6 key parts, one program, and your phone
What it is
Camera heads over cornhole boards, linked to a small venue computer that keeps score.
What it does
Who it's for
Bars, breweries and venues running cornhole leagues, and local league directors.
How the parts connect
Every part, what links it to the brain, and how the data reaches your phone. A solid line is a cable; a dashed line is a radio link.
The program
mqtt.on('cc/+/+/motion', async (msg) => {
if (msg.state !== 'settled') return;
const frame = await ring.frameAt(msg.frameTs); // one 1080p frame
const top = warpToBoard(frame, board.homography); // 640x400, 2.5 mm/px
const seg = await hailo.segment(top); // bag, hand
if (seg.some(s => s.cls === 'hand')) return; // wait for next settle
const bags = footprints(seg, board.cameraPose); // parallax-corrected
const throwEvt = score.diff(board.state, bags, holePulse.take());
board.state = throwEvt.state;
mqtt.publish(`cc/${lane}/${board.id}/throw`, throwEvt.json(), { qos: 1 });
ws.broadcast(lane, score.view(board)); // TV, overlay, tablet
});To your phone
Tablet, bar TV browser, player's phone
One screen for each job CornholeCam does.
Live scoringIt is league night on lane 2. The camera over each board scores every bag and the bar TV shows the round in about a second.
Close callsA bag hangs off the front edge of the board. The camera cannot see the floor, so it asks the players to call it.
ReplaysOn a 3-pointer the hub cuts a 6-second clip and plays it on the bar TV and the stream overlay.
League statsAt the end of the game each player scans the QR and gets their points per round and best clips, ready for the standings.
App screens with sample data. The interface is in development.
| Throw result | Red bag in the hole, 3 pts | Each throw |
|---|---|---|
| Round score | Red 14, Blue 9 | Each round |
| Replay clip | 6 s, 3-pointer | On a hole |
| Points per round | PPR 7.4 | End of game |
| Check prompt | Front-edge bag: on or off? | Unsure scores |
Cameras look down at the board, with no audio or face recognition. Video stays on the hub unless shared.
CAD design · Design complete on paper (stages 1-6), not built
| AI processor | IEMI Edge Hub: Raspberry Pi 5 8GB with AI HAT+ (Hailo-8, 26 TOPS); Raspberry Pi Zero 2 W in each camera head |
|---|---|
| Camera | Raspberry Pi Camera Module 3 (Sony IMX708, autofocus, HDR): standard 66° lens for 3–4 m ceilings or Wide 102° lens for 2.5–3 m and stands |
| Sensors | Optional Pololu VL53L5CX 8×8 time-of-flight hole sensor with Seeed XIAO ESP32-C3 under each board |
| Connectivity | PoE Ethernet to each head (TP-Link TL-SG1210P, 8 ports = 4 lanes) · Wi-Fi from the hub for hole sensors and tablets · Local MQTT and WebSocket; RTSP and obs-websocket to OBS · Outbound-only events to the IEMI cloud |
| Power | Heads on 802.3af PoE (about 2.6 W each); hub and switch on mains, about 31 W for 4 lanes; hole sensors on USB power or a power bank |
| Enclosure | Black PETG camera head with tilt hinge, hung on an M6 bolt with a steel safety lanyard; printed truss clamp, light-stand head and under-board sensor bracket |
| Dimensions | Camera head about 109 × 51 × 32 mm |
| Rules | ACL: 3 in hole, 1 on board, cancellation, 21 at round end |
|---|---|
| Bag settle to TV | ≤ 1.5 s (p95), about 2.2 s after the bag stops |
| Round accuracy goal | ≥ 98% exact round scores with no human input |
| Unclear bags | One-tap confirm prompt |
| Ceilings | 2.5–4 m, or light stands |
|---|---|
| Resolution on board | About 1.5–2.9 mm per pixel |
| Video | 1080p30 H.264 per head |
| Low light | Warning below 80 lux on the board (to be tested) |
| Lanes per hub | Up to 4 (8 camera heads) |
|---|---|
| Power | About 31 W typical for 4 lanes |
| Clip storage | 7 days on the hub |
Targets for production units; they may change during development.
Hardware: $449 per lane, plus a $590 venue hub
Software: $29–$49 per venue per month
Target prices: $590 venue hub ($0 with an existing Edge Hub), $449 per lane, $29 per venue per month up to 4 lanes ($49 for 5–8), portable stand kit $79 per lane. Parts cost is about $490 per hub and $315 per lane (est.).
$449 per lane (target)
Camera heads, mounts, cables and hole sensors for one lane.
$29/mo up to 4 lanes; $49/mo for 5–8 (target)
Leagues, stats, replays, overlays and the TV scoreboard.
$590 (target)
Edge Hub and PoE switch for up to 4 lanes; $0 if you already have an Edge Hub.
Indicative launch pricing in USD, excluding taxes and shipping. Final pricing is confirmed before any balance is charged.
Community
CornholeCam is in development. Rate the idea, tell us what to change about the features, specs or price, and we'll build it with your feedback.
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Questions
Tell us what this would save you, or ask anything. We reply within two business days.
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From the product lab · ideation phase
No. CornholeCam is a concept in the in-house design and testing stage. It is designed on paper and in CAD, but nothing has been built, printed or measured, and all accuracy and timing figures are targets.
Not from above on the front edge. When a bag hangs far over the front edge, CornholeCam asks for one tap instead of guessing, and it never shows a guessed score as final.
No. It is designed for bar and league play. Officiating ACL-sanctioned pro events, foot-foul detection and betting features are not goals.
Cameras look down at the boards, with no audio and no face recognition. Streaming is off by default per lane, a LIVE badge shows when it is on, and the kit includes signage.
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Concept · target $449