StoreSense

How it fits together

StoreSense, part by part

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.

See the 3D CAD designShow the concept

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1. 01

   The whole StoreSense

   Two ceiling sensors count heads through the shop door as dots, never pictures. Counts join till sales in the cloud for a weekly email.

2. 02Brain

   ESP32-S3 door unit

   The brain: it runs the storesense door firmware program

3. 03

   Two VL53L8CX ToF sensors

   Measure an 8×8 grid of heights at 15 Hz, one each side

   ESP32-S3 door unit · I²C ×2 (own bus each) · 8×8 range frames

4. 04

   Zone node (till, aisle)

   Counts people and dwell time in one marked area

   ESP32-C6-WROOM-1 · ESP-NOW radio · Zone minute summaries

5. 05

   Status LED

   Shows setup, running and fault state through a light pipe

   ESP32-S3 door unit · GPIO pin (one data line) · Colour data

6. 06

   Setup button

   Held 5 s to start Bluetooth setup

   ESP32-S3 door unit · GPIO pin · Button press

7. 07

   USB-C 5 V supply

   Powers the unit from a wall adapter or PoE splitter

   ESP32-S3 door unit · USB-C 5 V lead · 5 V power

8. 08

   All connected

   6 key parts, one program, and your phone

The idea

A door counter and ceiling zone sensors, joined to till sales, email the owner three changes to make each Monday

How the parts connect

StoreSense, wired up

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

What controls StoreSense

for (;;) {
    vl53l8cx_wait_frame(&a, &b);                 // I2C0 + I2C1, INT pins
    heightmap_update(&map, &a, &b, MOUNT_H_M);   // 16 x 8 grid, 4 cm cells
    foreground(&map, &bg, 0.45f);                // over the median floor

    head_t heads[MAX_HEADS];
    int n = find_heads(&map, heads, 0.9f);       // peaks >= 0.9 m
    tracks_step(&trk, heads, n);                 // constant-velocity Kalman

    for (cross_t *c = tracks_crossings(&trk); c; c = c->next)
        counts_add(&minute, c->dir, classify(c));   // adult / child / stroller
    if (minute_done()) mqtt_publish_counts(&minute);
}

To your phone

How the data reaches StoreSense app and weekly email

Owner phone (Bluetooth setup) and email

1. Zone node
2. ESP-NOW radio
3. Door unit
4. Wi-Fi · MQTT over TLS
5. IEMI cloud
6. HTTPS and email
7. Owner's phone

Key specs

Targets for production units; they may change during development.

Pricing

Target pricing. Parts cost about $39 per door unit and $21–27 per zone node at qty 1, about $86 for a 1-door, 2-zone kit (est.).

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

1. 29 Oct 2026, 14:45LatestIndependent shops know their takings but not their footfall, queue waits or fitting-room losses; door counters such as Dor and Avia give counts and dashboards, not actions (StoreSense DESIGN.md market check).

   • Drawn idea plan (idea.json): an independent clothing shop from above, with the front door on the high street, the till counter and its queue, the aisle, the fitting rooms and the back office; pins for the door unit, three zone nodes and the owner's phone with the till sales feed
   • The product picture is now this drawn plan instead of the plain fallback card; drawn from the design notes, not the CAD
   • What the plan keeps from the market work: no cameras anywhere, only depth sensors, and the owner gets up to three plain actions a week with a dollar value instead of a dashboard
   • Next: close-out C9 (recommend the first product to the owner) from 30 Oct 00:00; until then more drawn idea plans for catalogue products

   See it in 3DFull research and design

2. 27 Oct 2026, 10:30Independent grocers have four jobs in every aisle: shelves run empty between shelf walks (independents ran 6.6% out of stock in fiscal 2025, FMS/NGA study), spills wait to be noticed and a slip claim commonly settles at $15–75k (law-firm figures), paper floor-walk logs are easy to back-fill, and owners lose buyers to the till queue without knowing it (Dor counters cost $59–150 a month). Our own four products for it cost about $4,476 and $466 a month for a 6-aisle store.

   • Combined into StoreEye (https://iemilabs.com/products/storeeye/); StoreSense itself is unchanged

   See it in 3DFull research and design