FloorSafe

How it fits together

FloorSafe, 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 FloorSafe

   One crown on a wet-floor sign logs when the sign is out, shows the heat colour and catches vape or smoke; its wall dock charges it.

2. 02Brain

   ESP32-C6-MINI-1 (main PCB)

   The brain: it runs the floorsafe-fw program

3. 03

   SEN66 air module

   Measures particles, VOC, NOx and CO₂ to spot vape or smoke

   ESP32-C6-MINI-1 (main PCB) · I²C (6-pin cable) · 1 Hz air readings

4. 04

   SHT45 heat probe

   Reads room temperature and humidity in a vented fin

   ESP32-C6-MINI-1 (main PCB) · I²C (STEMMA QT cable) · Air °C and RH

5. 

   05

   LIS3DH tilt sensor

   Tells if the sign is open on the floor or folded

   ESP32-C6-MINI-1 (main PCB) · I²C and a wake pin · Tilt and motion wake

6. 

   06

   Colour light ring

   Shows the heat colour, flashes amber while the floor is wet

   ESP32-C6-MINI-1 (main PCB) · One data pin (GPIO) · Colour for 12 LEDs

7. 

   07

   Walk checkpoint tag

   Proves a staff phone stood at the dock on a floor walk

   ESP32-C6-MINI-1 (main PCB) · NFC tap to phone · Signed tap counter

8. 08

   Dock charge pins

   Feed 5 V to the crown whenever the sign hangs on the dock

   ESP32-C6-MINI-1 (main PCB) · Pogo pins to the charger · 5 V charge power

9. 

   09

   Two 18650 cells

   Run the crown for about 12 days off the dock

   ESP32-C6-MINI-1 (main PCB) · Battery lead to charger · 3.7 V battery power

10. 10

    All connected

    8 key parts, one program, and your phone

The idea

The wet-floor sign staff already carry logs when it goes out, glows the heat colour and flags vaping in the stairwell

How the parts connect

FloorSafe, 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 FloorSafe

for (;;) {
    State s = sign_state(lis3dh_read(), dock_power());  // DEPLOYED / DOCKED / MOVING
    if (s != last.s) publish("fs/sign", s);            // SignTag job
    if (s == DOCKED || air_window_due()) {
        sen66_read(&air);                               // I2C, 1 Hz
        if (event_step(&ev, &air) == EVENT_DONE)        // vape / smoke job
            publish("fs/air_event", gbt_classify(&ev));
    }
    if (minute_tick()) {
        float hi = heat_index(sht45_read());            // heat job
        heat = pick_band(hi, cfg.rules);                // e.g. 82 / 87 °F
        publish("fs/heat", hi, heat);
    }
    ring_show(heat, s == DEPLOYED);                     // colour + amber flash
    sleep_until_next(s);
}

To your phone

How the data reaches FloorSafe app

Staff phone and manager browser (web app)

1. Sign crown
2. Building Wi-Fi · MQTT over TLS
3. IEMI cloud
4. Web push and HTTPS
5. Staff phone

Key specs

Targets for production units; they may change during development.

Pricing

Target pricing. Bought separately, SpillGuard AI ($399 + $199/mo), HeatGuard/HeatFlag ($699 + $19/mo) and VapeSense AI ($449 + $12/mo) add up to $1,547 + $230/month. Parts cost about $140 per crown and dock at quantity 1 (est.).

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

1. 28 Oct 2026, 17:25LatestA hotel or apartment building needs proof its wet-floor signs were out, a log of back-of-house heat under indoor heat rules, and word of vaping in non-smoking areas; today that is staff memory, a handheld meter and our own three single-job products at $1,547 plus $230 a month (sources in DESIGN.md).

   • Drawn idea plan (idea.json): a hotel back-of-house floor from above with the laundry, stairwell B, the service lift, the service corridor with a mopped spill, the guest rooms and the engineer's office; pins for a sign out on the floor, two wall docks and the engineer's and manager's phones
   • The product picture is now this drawn plan instead of the plain fallback card; drawn from the rev A design notes, not the CAD
   • What we kept from the market work: vape and heat are flags for a place, never a person, and the sign log is evidence, not fall prevention; the plan says so through what each pin does
   • Next: drawn plans for more catalogue products that still show the fallback card

   See it in 3DFull research and design

2. 27 Oct 2026, 01:11Hotels, apartment buildings and offices need three things done in the same corridors: show when a wet floor was signed and checked (slip claims), measure indoor heat in laundries and back corridors (California's indoor heat rule starts at 82 °F), and catch smoking and vaping in non-smoking areas (about $620–1,300 per hotel incident, Minut). Today that is three separate tools, or none.

   • New product FloorSafe: one ESP32-C6 brain, one battery, one Wi-Fi radio and one case do the jobs of SpillGuard AI, HeatFlag and VapeSense AI
   • New CAD parts: a sensor crown on the wet-floor sign handle (with a vented heat-probe fin), its lid, a light dome, the SpillGuard handle clip, and a wall dock that charges the crown, holds the folded sign and carries the walk-check NFC tag; every bought part fits and each part is one solid
   • 3D view: the sign folded on its dock on a corridor wall, with the crown on its handle
   • Dropped for indoor use: HeatFlag's black globe, wind sensor, solar panel and pole beacon; VapeSense's LoRa radio and ceiling mount; SpillGuard's separate tag battery and wall plaques
   • Product page: $349 + $15/month, against $1,547 + $230/month for the three products bought separately; parts about $140 (est.)
   • New product page: https://iemilabs.com/products/floorsafe/

   See it in 3DFull research and design

3. 27 Oct 2026, 01:11Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

   • New product page: https://iemilabs.com/products/floorsafe/

   See it in 3DFull research and design

4. 27 Oct 2026, 01:11Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

   • New product page: https://iemilabs.com/products/floorsafe/

   See it in 3DFull research and design

5. 27 Oct 2026, 01:11Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

   • New product page: https://iemilabs.com/products/floorsafe/

   See it in 3DFull research and design