DampHome

How it fits together

DampHome, 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 DampHome

   One wall hub by the RO purifier counts drinking water, finds water on the cabinet floor and watches the damp wall, with one brain.

2. 02Brain

   ESP32-C6-MINI-1 (wall hub)

   The brain: it runs the damphome-fw program

3. 03

   Flow sensor

   Counts litres of drinking water poured from the RO tap

   ESP32-C6-MINI-1 (wall hub) · GPIO pulse on a 3-wire lead · Pulses per litre

4. 

   04

   Pump current monitor

   Sees the RO pump run, for pump hours and filter wear

   ESP32-C6-MINI-1 (wall hub) · I²C on the hub board · Pump volts and amps

5. 05

   Floor leak foot

   Two steel contacts find water on the sink-cabinet floor

   ESP32-C6-MINI-1 (wall hub) · 2-wire lead to a comparator · Wet or dry

6. 

   06

   Wall-tag humidity sensor

   Reads air humidity and temperature at the damp wall

   ESP32-C6-MINI-1 (wall hub) · I²C on a 4-wire lead · Humidity and temperature

7. 

   07

   Wall-surface thermistor

   Touches the wall to read how cold its surface is

   ESP32-C6-MINI-1 (wall hub) · Analogue pin, same 4-wire lead · Wall temperature

8. 08

   Leak buzzer

   Chirps in the kitchen so the family finds the water

   ESP32-C6-MINI-1 (wall hub) · GPIO pin and transistor · On or off

9. 

   09

   AA backup cells

   Keep leak and damp alerts on with the purifier off

   ESP32-C6-MINI-1 (wall hub) · Ideal-diode backup switch · 3 V backup power

10. 10

    All connected

    8 key parts, one program, and your phone

The idea

One wall hub by the kitchen RO purifier tracks the filters, catches a leak in the sink cabinet and warns of a damp wall

How the parts connect

DampHome, 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 DampHome

for (;;) {
    if (leak_wet()) { buzzer_chirp(); publish_now("dh/leak", 1); }  // comparator wakes us
    litres += flow_pulses_take() / k_factor;                    // PCNT on the hall sensor
    if (ina226_pump_on()) pump_s += tick_s();                   // RO pump running
    filters_step(&stages, litres, pump_s);                      // PureTrack due counters
    if (every(300)) {
        sht45_read(&air);  float tw = ntc_read_c();            // wall tag
        float surf = surface_rh(air.rh, air.t, tw);             // MouldGuard formula
        plug_set(surf > 70.0f);                                 // listed plug, local API
    }
    if (on_mains()) publish_changes(); else store_for_ble_sync();
    light_pipes_show(stages.due, leak_wet(), surf > 70.0f);
    sleep_until_next_event();
}

To your phone

How the data reaches DampHome family app (dealer view for the RO service dealer)

Android and iPhone

1. Wall hub
2. Home Wi-Fi · MQTT over TLS
3. IEMI cloud
4. BLE sync on a technician visit
5. Dealer's app
6. Push and SMS
7. Family phones

Key specs

Targets for production units; they may change during development.

Pricing

Target pricing, about ₹8,999 in India. Bought separately, MouldGuard ($49), WaterLeak AI single-home unit ($199) and PureTrack ($29) add up to $277. Parts cost about $41 per home (est.); the optional smart plug is extra.

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

1. 28 Oct 2026, 15:25LatestA family with an RO purifier in a damp monsoon city needs to know when filters are really due, to hear about a sink-cabinet leak the day it starts, and to catch a damp wall before mould shows; leaks are among the top RO service calls and leak sensors alone cost about Rs 700 to 2,800 each (sources in DESIGN.md).

   • Drawn idea plan (idea.json): an Indian home kitchen from above with the counter, the sink and its cabinet, the RO purifier on the wall and the gas stove; pins for the hub beside the purifier, the flow sensor on the tap line, the leak foot on the cabinet floor and the wall tag on the damp wall
   • 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: it is sold and fitted through the RO service dealer who already visits, and it is a monitor-and-alert aid only
   • Next: drawn plans for more catalogue products that still show the fallback card

   See it in 3DFull research and design

2. 27 Oct 2026, 02:16In monsoon cities RO purifier leaks are among the most common service calls (RO Care India), and walls stay damp and grow mould unseen (Housing.com, The Better India). Families pay for a leak sensor, a hygrometer and a calendar service plan, with three apps or none.

   • New product DampHome: one ESP32-C6 brain, one Wi-Fi and BLE radio, one supply from the purifier and one app do the jobs of PureTrack, WaterLeak AI (home sensor) and MouldGuard (wall sensor)
   • New CAD parts: a wall hub (base and lid, with room for 2 AA backup cells and 5 leads), a wall bracket and a floor leak foot; PureTrack's flow saddle and tube clip and MouldGuard's wall tag reused; every bought part fits and each part is one solid
   • 3D view: an Indian kitchen sink corner with the hub beside the RO purifier, the flow sensor on the tap line, the wall tag on the cabinet wall and the leak foot on the cabinet floor
   • Dropped: MouldGuard's weighing board and survey kit, WaterLeak's building riser node, valve and gateway, and the geyser probes, which belong in other rooms or buildings
   • Product page: $109 per home, against $277 for the three products bought separately; parts about $41 (est.)
   • New product page: https://iemilabs.com/products/damphome/

   See it in 3DFull research and design

3. 27 Oct 2026, 02:16Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

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

   See it in 3DFull research and design

4. 27 Oct 2026, 02:16Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

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

   See it in 3DFull research and design

5. 27 Oct 2026, 02:16Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

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

   See it in 3DFull research and design