LaundroLink

How it fits together

LaundroLink, 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

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

1. 01

   The whole LaundroLink

   Clamps on each machine's power wire show when it runs. The hub sends start and stop events so owners and customers see what is free.

2. 02Brain

   ESP32-C6-WROOM-1 hub

   The brain: it runs the ll-hub firmware program

3. 

   03

   Split-core current clamp

   Clips round a machine's live wire and reads its current

   ESP32-C6-WROOM-1 hub · 3.5 mm jack lead · 0–1 V current signal

4. 04

   ADS131M08 ADC

   Samples 8 clamps at the same instant, 24-bit

   ESP32-C6-WROOM-1 hub · SPI, 8 MHz · 4 kSPS current samples

5. 

   05

   Vibration puck IMU

   Magnet-mounted pilot that senses a running machine by shaking

   ESP32-C6-WROOM-1 hub · I²C (STEMMA QT) · Acceleration at 208 Hz

6. 

   06

   LTE-M modem

   Backup link when store Wi-Fi drops

   ESP32-C6-WROOM-1 hub · UART (1.8 V shifted) · AT commands and MQTT

7. 

   07

   DIN-rail 5 V supply

   Powers the hub from the store's mains, fused

   ESP32-C6-WROOM-1 hub · 5 V power lead · 5 V low-voltage power

8. 08

   All connected

   6 key parts, one program, and your phone

The idea

A hub by the breaker panel that knows which laundromat machines run, which are down, and whether the coins match

How the parts connect

LaundroLink, 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 LaundroLink

for (;;) {
    xQueueReceive(drdy_q, &frame, portMAX_DELAY);   // ADS131M08 DRDY ISR
    for (int ch = 0; ch < 16; ch++) {
        rms[ch] = rms_100ms(frame, ch);
        evt_t e = detect(&st[ch], rms[ch]);         // idle + 0.25 A ON, + 0.10 A OFF
        if (e.type != EVT_NONE) {
            e.seq = ++st[ch].seq;                   // idempotent
            publish_or_buffer("ll/<store>/<dev>/event", &e);
        }
    }
    if (every_10s()) publish_rms(rms);              // Wi-Fi only
}

To your phone

How the data reaches LaundroLink Owner

Owner phone or laptop (PWA); customers use a web page

1. Hub
2. Wi-Fi · MQTT over TLS (LTE-M backup)
3. IEMI server
4. HTTPS and live updates
5. Phone or laptop

Key specs

Targets for production units; they may change during development.

Pricing

Target pricing. Hub parts cost about $242 at prototype quantity ($172 Wi-Fi only); a pilot puck about $32 (est.). If inspectors require listed current sensors, the hub cost rises well above the $399 price. Electrician fees are extra.

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

1. 29 Oct 2026, 08:55LatestOwners of coin laundromats with 30 to 60 machines learn a machine is down days late, cannot check coins against cycles, and lose visits when customers find the store full; card systems that track this mean new payment hardware on every machine (LaundroLink DESIGN.md market check).

   • Drawn idea plan (idea.json): a 40-machine laundromat from above with the washer row, back-to-back washers, the dryer wall, folding tables, the back room with the breaker panel and the front window; pins for the hub at the panel, a washer that goes silent, the pilot vibration puck, the QR fault card on a dryer, the coin check and the free-now sign
   • 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: coin-only stores first; the coin gap is a check to be proven in a pilot, and the free-now page is a hypothesis we will measure
   • Next: more drawn plans for catalogue products that still show the fallback card (linecell, motorpulse-ai), then close-out C5 (buyer review prep for sports) from 12:00

   See it in 3DFull research and design

2. 27 Oct 2026, 11:00A shared laundry room has three jobs: the owner wants to know which machines are down and how many cycles really ran, to check coins or the route operator's statement (route systems like LaundryView belong to the operator); residents want to know what is free before carrying a basket downstairs; and a burst washer hose costs about $5,300 a claim after the deductible (figure attributed to IBHS). Our own three products for it cost about $1,277 and $153 a month for an 8-machine room.

   • Combined into LaundryRoom (https://iemilabs.com/products/laundryroom/); LaundroLink itself is unchanged

   See it in 3DFull research and design