SmartStump Pro

Name: SmartStump Pro
Brand: IEMI Labs
SKU: smartstump-pro
Price: 49.00 USD
Availability: PreOrder

AI cricket stumps and bails that make the call in under 150 ms

In development · Ships Q3 2027Reservations open

From$1,500per set

Software: $29–$49 per month

Reserve for $49 (fully refundable)Ask a question

$49 deposit, credited against the final price, refundable any time before shipment. Target ship window Q3 2027.

Product render — final design may vary

Real-time 3D render · drag to rotate · final design may vary

What it is

A full set of cricket stumps and bails with a tiny camera and sensors built inside.

What it does

Spots bowled and bail-off instantly
Catches faint edges off the bat
Sends the call to the umpire
Replays every dismissal in slow motion

Who it's for

Cricket clubs, schools, academies, indoor centres and tournament organisers.

Look inside

What's inside SmartStump Pro

Keep scrolling: it opens up in real time to show the parts that do the work.

AI processorKendryte K230D (6 TOPS) per stump; Hailo-8L (13 TOPS) option in centre stump
Camera1× 4K global-shutter, 150° wide-angle, flush-mounted in centre stump
Sensors6-axis IMU in each stump and bail · Piezo impact / vibration sensor · MEMS microphone · Light sensor (bails)
Connectivity5G Wi-Fi 6E (dual-band) · Bluetooth LE 5.3 · HDMI / SDI via base receiver (optional)
Power6000 mAh Li-ion per stump (up to 12 h); 800 mAh per bail (up to 12 h); USB-C / base-socket charging
EnclosureAsh-wood-finish composite shell over aluminium chassis, sealed caps, hardened optical window

Product render — final design may vary

Overview

SmartStump Pro is a full set of cricket stumps and smart bails with a 4K wide-angle camera, impact sensors and an edge AI processor built inside standard stump dimensions. It detects bowled, LBW support events, edges and bail dislodgement on-device and sends a decision, replay and data to the umpire's tablet in under 150 ms.

Fits inside standard 720 mm × 45 mm stumps — no change in look or play
Bail-dislodgement, edge and hit detection with LED bail signals
On-device AI (K230D / Hailo-8L) — decisions in under 150 ms
4K 150° centre-stump camera with instant slow-motion replay

The problem

Club, school and academy cricket is decided by naked-eye umpiring, while ball-tracking and snick detection remain locked inside broadcast-grade systems costing tens of thousands of dollars per match. Close calls on faint edges, bail movement and front-foot no-balls cause disputes, slow games and frustrate players. Coaches also lose valuable data every time a delivery is bowled.

Use cases

Club and league umpiring

Give umpires an instant, objective second opinion on bowled, bail-off and run-out calls, with replay on a tablet at square leg.

Edge and snick detection

Fuse stump-mounted vibration sensing with audio and video cues to flag faint edges and ball-bat-stump contact.

Front-foot no-ball checks

Track the bowler's front foot against the popping crease using pose estimation and alert the umpire within the same over.

Academy coaching and analytics

Capture every delivery's line, length and outcome automatically so coaches can review sessions without manual tagging.

Streaming and local broadcast

Output a stump-cam 4K feed and replays over HDMI/SDI or Wi-Fi to streaming software for school and club broadcasts.

Junior and indoor cricket

Run fair, data-rich matches at schools and indoor centres where no third umpire is available.

How it works

1
Capture
The centre-stump 4K camera records at up to 120 fps (1080p at 240 fps for slow motion) while IMU and impact sensors in every stump and bail sample continuously.
2
Detect
On-device models detect and track the ball, bails and batter's pose in real time on the K230D / Hailo-8L processor.
3
Decide
Sensor fusion classifies the event — bowled, bail off, edge, no-ball — and LED bail lights signal the result in under 150 ms.
4
Replay
An instant slow-motion clip with the decision overlay is generated and pushed to the umpire tablet over 5G Wi-Fi 6E.
5
Review and share
Matches, deliveries and clips sync to the IEMI dashboard for coaches, scorers and players after the game.

In the app

IEMI Umpire

The IEMI umpire app shows live decisions, slow-motion replays and ball data on a tablet; the web dashboard stores every match for coaches and scorers.

Instant decision cards with replay
Delivery-by-delivery event log
Bowler and batter session analytics
Clip export for social and coaching
Multi-ground fleet management
Offline mode with later sync

IEMI UmpireLive

Match 12 · Over 14.3

Decision time

118 ms

Bail impact

2.4 g

Ball speed

128 km/h

Edge signal

None

Decision · 15:42

OUT · Bowled

Off stump struck, both bails dislodged at 14.3

Wicket · Bowled15:42
Off-stump impact, bails off in 9 ms
Edge detected · 13.515:31
Faint contact before keeper catch
Bail clipped · 12.215:18
Bail moved but stayed in groove — NOT OUT
Stump battery 64%15:02
Leg stump module, ~5 h remaining

App preview with sample data — interface in development

AI capabilities

Runs on-device · Kendryte K230D

Ball detection and tracking

Detects the ball at speed and builds a trajectory across frames near the stumps.

Model: YOLO11-n (small-object tuned) + Kalman tracker

Bail movement detection

Confirms bail dislodgement from bail IMU data and video, rejecting wind and vibration false positives.

Model: 1D-CNN on IMU signals + frame-difference verifier

Player pose and foot position

Estimates batter and bowler keypoints for front-foot and stance analysis.

Model: RTMPose / YOLO11-pose

Event classification

Classifies each delivery outcome: wicket, edge, no-ball, leave, beaten.

Model: Temporal transformer over fused sensor + vision features

Audio-impact edge detection

Separates bat-on-ball from bat-on-pad and ground sounds using stump vibration and microphone spectrograms.

Model: MobileNetV3 audio classifier

Hardware & target specifications

Targets for production units. Subject to change during development.

Hardware

SmartStump Pro hardware
AI processor	Kendryte K230D (6 TOPS) per stump; Hailo-8L (13 TOPS) option in centre stump
Camera	1× 4K global-shutter, 150° wide-angle, flush-mounted in centre stump
Sensors	6-axis IMU in each stump and bail · Piezo impact / vibration sensor · MEMS microphone · Light sensor (bails)
Connectivity	5G Wi-Fi 6E (dual-band) · Bluetooth LE 5.3 · HDMI / SDI via base receiver (optional)
Power	6000 mAh Li-ion per stump (up to 12 h); 800 mAh per bail (up to 12 h); USB-C / base-socket charging
Enclosure	Ash-wood-finish composite shell over aluminium chassis, sealed caps, hardened optical window
Dimensions	720 mm × 45 mm Ø per stump; 114 mm bails
Weight	≤ 180 g added per stump
Ingress rating	IP67

Vision

Vision target specifications
Camera	4K global shutter, 150° FOV
Frame rate	Up to 120 fps at 4K; 240 fps at 1080p
Replay	Instant slow-motion, 8–10 s buffer
Optics	Hardened, impact-resistant window

AI and detection

AI and detection target specifications
Processor	K230D (6 TOPS) / Hailo-8L (13 TOPS)
Events	Bowled, bail off, edge, hit, stump displacement, no-ball
Decision latency	< 150 ms end-to-end
Processing	100% on-device; cloud optional

Power and wireless

Power and wireless target specifications
Stump battery	6000 mAh, up to 12 h
Bail battery	800 mAh, up to 12 h
Wireless	5G Wi-Fi 6E, BLE 5.3
Range to tablet	Up to 80 m line of sight
Charging	USB-C or optional base socket

Physical

Physical target specifications
Stump size	720 mm × 45 mm (standard)
Bail length	114 mm
Added weight	≤ 180 g per stump
Weatherproofing	IP67
Operating temp.	−10 °C to 50 °C

Built with

The real parts inside

Proven, off-the-shelf components our prototypes are built on. Final production parts may differ.

High-quality camera with C-mount lens (reference photo) — High-quality camera with C-mount lens
Sharp, fast capture for inspection and decisions
Photo: Laserlicht,CC BY-SA 4.0, via Wikimedia Commons · AI overlay added

Motion sensor (IMU) (reference photo) — Motion sensor (IMU)
Senses movement and orientation
Photo: SparkFun,CC BY 2.0, via Wikimedia Commons · AI overlay added

Impact sensor (accelerometer) (reference photo) — Impact sensor (accelerometer)
Detects hits, shocks and vibration
Photo: SparkFun,CC BY 2.0, via Wikimedia Commons · AI overlay added

Wi-Fi and Bluetooth module (reference photo) — Wi-Fi and Bluetooth module
Connects sensors to the app
Photo: Brian Krent,CC BY-SA 4.0, via Wikimedia Commons · AI overlay added

Lithium-ion battery cells (reference photo) — Lithium-ion battery cells
Hours of cable-free power
Photo: Sevenethics,CC0, via Wikimedia Commons · AI overlay added

Reference photos of commercially available components. IEMI Labs is not affiliated with or endorsed by their manufacturers. Photo credits

In the box

Planned contents

3× SmartStump Pro stumps
2× smart bails with LED signals
Charging case with multi-port USB-C hub
Umpire app licence (1 tablet)
Quick-start guide
Spare optical window cover

Software & app

The IEMI umpire app shows live decisions, slow-motion replays and ball data on a tablet; the web dashboard stores every match for coaches and scorers.

Instant decision cards with replay
Delivery-by-delivery event log
Bowler and batter session analytics
Clip export for social and coaching
Multi-ground fleet management
Offline mode with later sync

Integrations

IEMI umpire app (iPadOS / Android)
OBS / vMix via NDI or HDMI
CSV / JSON match export
REST API and webhooks
Popular cricket scoring apps (export-based)

Pricing

Hardware: $1,500 per set

Software: $29–$49 per month

Target price $1,500 per set. Core on-device decisions work without a subscription; plans add cloud replays, analytics and multi-device access.

Club

$1,500 + $29/mo

For clubs and schools running weekend fixtures.

Full stump and bail set
Umpire app for 1 tablet
30-day cloud replay storage
Match event log

Academy

$1,500 + $49/mo

For coaching academies that want analytics on every session.

Everything in Club
Player profiles and session analytics
Unlimited clip export
3 coach seats

League

Custom

For leagues and tournaments across multiple grounds.

Everything in Academy
Multi-ground fleet dashboard
Streaming output and overlays
Priority support and spares

Indicative launch pricing in USD, excluding taxes and shipping. Final pricing is confirmed before any balance is charged.

Estimated impact

Decision review time: up to 70% faster (est.)
Disputed close calls: up to 50% fewer (est.)
Coach tagging effort: up to 80% less manual work (est.)

Illustrative estimates based on internal modelling and typical deployments; not measured results. Actual outcomes depend on site conditions and usage.

Designed for

Cricket clubs and local leagues
Schools and universities
Cricket academies and coaches
Indoor cricket centres
Tournament organisers

Industries

Sports & Coaching

Roadmap

Target milestones. We will email reservation holders and pilot partners as they change.

Q4 2026
Reservations open; second functional prototype in field testing
Q1 2027
Engineering validation (EVT) and model training on club-match footage
Q2 2027
Design validation (DVT), weather and impact testing; pilot sets with partner academies
Q3 2027
Production validation and first shipments to reservation holders
Q4 2027
Governing-body review and certification process planned

Questions

Ask about SmartStump Pro

Volume orders, clubs and institutions, integrations or anything else. We reply within two business days.

SmartStump Pro FAQ

General FAQ

Is the $49 reservation deposit refundable?

Yes. The $49 deposit is fully refundable any time before your unit ships — email hello@iemilabs.com or use the refund link in your confirmation email. It is credited in full against the purchase price, and reserving creates no obligation to buy. Payments are processed securely by Stripe.

Is SmartStump Pro approved for official matches?

SmartStump Pro is designed to fit regulation stump and bail dimensions. Governing-body review and certification are planned after launch; until then it is intended for club, school, academy and training use as a decision-support tool for umpires.

Is my data processed on the device?

Yes. Ball tracking and decisions run on the processor inside the stumps. Video only leaves the set when you choose to sync replays to your dashboard or stream them, and you can run entirely offline.

How do I set it up?

Push the stumps into the pitch like normal stumps (or use the optional base socket for permanent venues), place the bails, and pair the set with the umpire app. A one-minute calibration aligns the camera with the crease.

How does it connect to the umpire tablet?

Over 5G Wi-Fi 6E with Bluetooth LE for pairing. No venue internet is required for decisions; internet is only needed to sync replays to the cloud.

What happens if a stump is hit hard?

Electronics are suspended on an impact-isolated chassis inside a composite shell rated for full-pace deliveries, and the bails are designed to be replaced individually.

What warranty will it come with?

We are planning a 2-year limited hardware warranty covering manufacturing defects, with advance replacement for pilot and business customers. Final warranty terms will be published before shipping begins.