IEMI's one product for the home kitchen: the range hood over your hob, made smart, so it watches the cooking and makes the kitchen's safety calls itself, in one family app
Software: $3 per month (family alerts, SMS and voice calls)
Concept, not for sale yet. Tell us if you want it; that decides what we build.
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How it fits together
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01
The whole KitchenOne
The range hood over the hob is the kitchen's own watcher: a thermal camera, a radar and a mic inside the canopy feed one brain that makes the kitchen's calls, lights them on the hood and tells the family.
02Brain
Seeed XIAO ESP32-S3 (in the hood's front compartment)
The brain: it runs the kitchenone-fw program
03
Thermal camera over the hob
Sees each burner lit, a pan heating dry, smoking oil, boil-overs, flares and the cooker on the flame
Seeed XIAO ESP32-S3 (in the hood's front compartment) · I²C (Qwiic lead, 10 cm) · 32 x 24 heat frame, 2 a second
04
Presence radar
Tells if anyone is in the kitchen, even sitting still
Seeed XIAO ESP32-S3 (in the hood's front compartment) · UART + OUT pin · Person there or not, distance
05
Microphone
Counts cooker whistles and hears the home's own smoke and gas alarms
Seeed XIAO ESP32-S3 (in the hood's front compartment) · Analog to an ADC pin · Sound, processed in memory, never stored
06
Call light and tone
Shows each call on the hood: amber, blue, red, with a tone
Seeed XIAO ESP32-S3 (in the hood's front compartment) · One data wire + PWM pin · Light colour and tone
07
Secure element and tamper switch
Signs each call; marks the log if the fascia is opened
Seeed XIAO ESP32-S3 (in the hood's front compartment) · I²C + GPIO · Signatures, tamper flag
08
Mains supply and backup cells
Runs the hood electronics and lamps; keeps alerts going about 36 h in a power cut (est.)
Seeed XIAO ESP32-S3 (in the hood's front compartment) · 5 V rail, battery sense pin · Power, mains-lost flag
09
All connected
7 key parts, one program, and your phone
Our circuit board · rev A-0
Every chip on one board we design, shaped to fit: the processor, cameras and sensors, Wi-Fi and Bluetooth, lights, sound and power. No plugs, ribbons or adapters. It is checked in our CAD against every part around it, and it arrives from the maker ready to run our software from a microSD card. Turn the model, or pick a part below to see where it sits.
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Every board-level number KitchenOne's jobs depend on, checked against its target: camera pixels and frame rate, power and battery life, heat where it works, shock, radio and software. Every lesson from every one of our boards is a rule here, so this review runs again whenever any board teaches us something. Boards are ordered only when nothing fails and the items to prove are measured.
| Area | Check | Our board | Target | Status |
|---|---|---|---|---|
| Camera | Hob heat camera: a 16 cm pan on the farthest burner at 0.77 m | 3.5 px | ≥ 2 px | passes |
| Camera | Hob heat camera: a burner left on with nothing on it: the 9 cm flame ring at 0.76 m | 2 px | ≥ 1.5 px | passes |
| Power | Supply | 5 V from the hood's Mean Well LRS-50-5 (50 W; it also feeds the hood lamps) | ≤ 70 % of the supply | passes |
| Power | Power cut | two 18650 cells: about 25 h of alerts in a power cut, cells aged to 80 % (0.6 W: heat camera at 0.5 Hz, Wi-Fi only for alerts, est.) | ≥ 24 h (a gas hob left on in a power cut is still seen and called) | to prove on the dev kit |
| Heat | ESP32-S3 temperature, the hood compartment over a hob at full boil (55 °C, est.) | 65 °C | ≤ 85 °C (rated) | passes |
| Heat | Cell temperature, the hood compartment over a hob at full boil (55 °C, est.) | 55 °C | ≤ 60 °C | passes |
| Heat | Heat camera away from warm parts | 91 mm or more from the radio, the power block and the supply lead | ≥ 30 mm | passes |
| Shock | Shock and vibration | 20 g (est.) | standard parts | passes |
| Software | Starts our software from the microSD card, no setup | microSD socket with a hinged, latched lid (Amphenol 101-00660 class), fitted on every board: our software starts from the card (ESP32-S3 SD bus | card socket fitted on every board, latched | passes |
| Software | Card power switch and protection | 1 power switch and 1 ESD array for 1 card socket | every socket: switched card supply, ESD on all 6 lines | fixed by the review |
| Software | The card wins the start | a small loader in the ESP32-S3 flash starts the program on the card | the program on the card runs every time | fixed by the review |
| Software | Card grade | industrial pSLC microSD (Kingston Industrial or Swissbit S-56u), −40 to 85 °C | rated for the heat, cold and writes | to prove on the dev kit |
| Radio | Wi-Fi from inside a steel hood | to the home router, out through the ASA fascia | certified ESP32-S3 module | to prove on the dev kit |
| Moisture | Conformal coating | coated | coated, sensors, sockets and antennas masked | passes |
| Fit | Board inside the product CAD, every part checked in 3D | not yet in the product CAD | nothing touches | to prove on the dev kit |
| Power | Cells charging in a hot hood | charging held above 45 °C by RT1 on the BQ24074, resumed when cooking ends | cells charged only at 0–45 °C | to prove on the dev kit |
| Fit | Tamper switch against the fascia boss | D2F-01 6.5 mm tall in a 7 mm gap; the boss reaches 1.3 mm into the Ø4 hole | pressed when the fascia is bolted, released when it is lifted | to prove on the dev kit |
Before we order the first boards, we prove these on the RV1126B development kit or in the rev A tests:
Demo · 6 real-world moments
Short animated scenes of real moments: what happens today, what KitchenOne does about it, and what lands on your phone. The same scenes play in the IEMI app.
A parent puts dal on the front-left burner to simmer and goes to lie down.
Use cases
A burner left on low is easy to forget once you sit down, and nobody else in the house notices until the pan burns.
The thermal camera sees the front-left flame and the radar sees the kitchen empty. After the family's limit (5 min) the hood glows amber with a tone; if nobody comes back, it calls the family. The hood cannot shut the gas off; it makes sure someone does.
Oil left on high passes its smoke point in minutes; a phone call or the doorbell is enough to forget it until it smokes or flares.
The thermal camera reads the pan's heat curve and shape, and the radar knows nobody is at the hob. Past the smoke point the hood turns red, sounds a fast tone, runs the fan at full and alerts the family. Under 80 % sure, it shows amber, not red.
Someone has to listen and count the whistles; miss one and the rice burns, or the cooker sits on the flame long after it is done.
The mic matches each whistle and counts it only while the thermal camera sees the cooker on a lit burner, so a whistle on the TV is ignored. At the target the hood glows blue and chimes; if the burner stays lit, it flags it.
A gas alarm only helps if someone hears it. With the family out, it can sound to an empty house for hours.
The hood's mic knows the alarm's tone pattern and checks it for up to 10 seconds. It turns red and sends an alert and a voice call to every family phone. It does not sense gas itself: LPG sinks, so the home's certified alarm by the cylinder does that job.
When a parent lives alone, nobody sees the kitchen in the day; the family either phones all day or hears after something has gone wrong.
The hood makes every kitchen call itself, lights it on the hood so the cook can act first, and calls the family only when a call still stands. Calls it is unsure of go to the app as unsure, with the heat frames, never as an alarm.
Rushing out of the door is when a burner gets forgotten; nobody finds out until someone comes home.
The thermal camera sees the front-right flame still lit and the radar sees the kitchen empty. After 5 minutes the hood glows amber with a tone in case anyone is still at home; when nobody comes, it calls the family's phones. It cannot shut the gas off itself.
Demo scenes show how KitchenOne and its app are designed to behave. KitchenOne is in design; nothing here is recorded from real equipment yet.
What it is
IEMI's one product for the home kitchen: the chimney hood over the hob, made smart, with one brain and one app.
What it does
Who it's for
Families of a parent who cooks alone, and any home that cooks on gas.
The idea
The problem today
Families of a parent who cooks alone buy a stove alarm, a whistle counter and an alarm listener, each with its own app, or they simply worry. A burner left on, a pan heating dry or a gas alarm nobody hears are the moments that matter, and a plain hood just blows air.
With KitchenOne
The hood already hangs over the hob. KitchenOne puts a heat camera, a presence radar and a mic inside it, so it sees every burner and pan, counts whistles, hears the home's own alarms, glows and sounds at the hood first and calls the family only when needed.
How the parts connect
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
for (;;) {
mlx90640_frame(&heat); // I2C, 2 Hz
person_t who = ld2410_read();
calls_t c = kitchen_step(&zones, &heat, &who); // burner, dry pan, flare, boil-over
if (mic_window(&snd)) {
if (cooker_hot(&zones) && whistle_match(&snd)) c.whistles++;
alarm_grammar(&snd, &c.alarm); // home's own smoke or gas alarm
}
fan_pwm(auto_speed(&zones, &c)); // the hood's own blower
for (call_t *k = c.list; k; k = k->next) {
if (k->conf < k->line) k->kind = UNSURE; // never guess
atecc_sign(k); light_and_tone(k); publish(k); // MQTT over TLS
}
}To your phone
Family phones (Android and iPhone)
One screen for each job KitchenOne does.
No one home modeA parent lives alone and nobody else is in the house. The hood watches the hob all day, makes every kitchen call itself, lights it on the hood and calls family only when the call needs them.
Burner left onA parent puts dal on to simmer and goes to rest. The hood sees a lit burner and an empty kitchen, glows amber with a tone, then calls the family.
Dry pan, smoke and flareOil is heating for frying and the phone rings. The hood sees the pan pass the smoke point with nobody at the hob, turns red with a tone and sends the alert.
Whistle countRice is in the pressure cooker with a target of 3 whistles. The hood counts each one only while it sees the cooker on a flame, glows blue at 3 and flags the burner if it stays on.
Alarm heardThe kitchen's own gas-leak alarm goes off while the family is out. The hood hears its pattern, turns red and pushes an alert to every phone.
App screens with sample data. The interface is in development.
| Burner left on | Front-left lit, kitchen empty 6 min | Each call |
|---|---|---|
| Dry pan, smoke, flare | Pan at 260 °C and rising, nobody there | Each call |
| Whistles | 3 of 3, burner still on | Each whistle |
| Alarm heard | Gas-leak alarm sounding, 07:42 | Each alarm |
| Cooking day | 2 h 10 min of flame, gas used about 0.4 kg (est.) | Daily |
| Hood health | Fan auto 88 % of cooking; mains OK; window wipe due | Daily |
No camera images and no recordings: heat frames and sound stay in the hood; only signed calls leave the home.
CAD design · Design rev A, 28 Oct 2026: smart range hood that makes the kitchen's calls itself (7 calls, 5 alone, 2 assist), call light and tone, ATECC608 and tamper switch inside; 13 sensor views checked in the CAD; not built
| AI processor | One board of our own in the hood's front compartment: Espressif ESP32-S3 module. The bench hood uses a XIAO ESP32-S3 until the boards arrive |
|---|---|
| Sensors | Melexis MLX90640ESF-BAA heat camera, 32 × 24, 110°, looking down at the hob · Infineon BGT60TR13C 60 GHz radar chip behind the fascia: someone at the hob, in the kitchen, a child near it · Infineon IM69D130 mic: whistles and the home's own smoke and gas alarms · 16 call-light LEDs, a sounder, a touch strip, a security chip and a tamper switch |
| Connectivity | Wi-Fi (WPA3), MQTT over TLS · BLE for pairing only |
| Power | Mean Well LRS-50-5 from the hood's mains feed (also the hood lamps), 5 V to our board on one latched lead: about 0.9 W watching (est.). Two 18650 cells on the board with their own charger keep alerts going for about 25 h in a power cut, counted with cells aged to 80 % (est.) |
| Enclosure | The hood's own stainless canopy; electronics in a sealed 78 mm front strip behind a printed ASA fascia with an opal call-light slot |
| Dimensions | Canopy 598 x 480 x 90 mm + 4 mm fascia; chimney cover 250 x 250 mm |
| Weight | About 0.4 kg more than the plain hood (est.) |
| Ingress rating | Front strip sealed against grease and steam (design target, not tested) |
| Burner left on | Lit burner + empty kitchen past your limit |
|---|---|
| Pan | Dry pan, smoking oil, boil-over, flare |
| Whistles | Counted only on a hot cooker |
| Alarms | Hears your smoke and gas alarms; on a gas alarm it never switches the fan or lamps |
| Fan | Auto speed from the cooking |
| Daily routine | Tells the family if the kitchen is not used by the usual time (info only) |
| Power cut | About 36 h of watching and alerts on backup cells (est.) |
| Height over gas | 700 mm (at least 650 mm) |
|---|---|
| Size | Same 60 cm hood, bracket and duct |
| Safety | To be tested to IEC 60335-2-31 |
| Not | A gas detector, smoke alarm or shut-off |
Targets for production units; they may change during development.
Hardware: $369 per smart 60 cm chimney hood
Software: $3 per month (family alerts, SMS and voice calls)
Target pricing; India rupee price to be confirmed. Bought separately, a plain 60 cm chimney (about $155, Rs 11,800-16,000), StoveSentry ($129 + $3/mo), CookerCount ($19) and AlarmEcho ($39 + $3/mo) add up to about $342 + $6/month, about $414 in the first year. Parts cost about $272 per hood at qty 1 including the hood body (prices checked 28 Oct 2026); margin about 10 % at qty 1 and 38 % at qty 100 (est.).
$369 + $3/month
Every kitchen job in the hood over the hob.
Indicative launch pricing in USD, excluding taxes and shipping. Final pricing is confirmed before any balance is charged.
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From the product lab · ideation phase
Smart equipment · legal on the field
It replaces the kitchen's existing 60 cm chimney hood (for example a 60 cm auto-clean chimney, Rs 11,800-16,000 in 2026), with every part built in. Everything inside the canopy's front strip (598 x 78 x 88 mm) behind the hood's own front fascia: brain, thermal camera, radar, mic, call light and tone, secure element, tamper switch, supply and 2 backup cells. About +0.4 kg over the plain hood (est.); no pod, deck, plug or bar outside it.
| Rule | Limit | KitchenOne |
|---|---|---|
| Height of the hood above a gas hob | at least 650 mm (600 mm in the 2025 sheet), or more if the hob or hood instructions say so | ✓ 700 mm, asserted in the CAD |
| Same size and mounting as the plain hood | 60 cm class, wall bracket and chimney cover | ✓ 598 x 480 x 90 canopy, same bracket and duct collar; nothing hangs below the underside (CAD) |
| Electrical safety of a range hood (IEC 60335-2-31) | Class I hood, parts rated for the heat over a hob | ✓ electronics in a sealed front strip behind the fascia, away from the filter and the hot air path; listed 5 V supply; to be tested to IEC 60335-2-31 before sale |
| Grease filters and cleaning | filters removable for washing | ✓ the same 440 x 300 baffle filter opening; no sensors in the filter area |
| Radio in a home appliance | licence-free bands, certified module | ✓ 2.4 GHz Wi-Fi and BLE on the certified XIAO ESP32-S3 module; 24 GHz LD2410C presence radar |
| BIS licence to sell a range hood in India (Electrical Appliances for Kitchen (Quality Control) Order, 2023, S.O. 1128(E); IS 302 (Part 2/Sec 31)) | Standard Mark under a BIS licence for every range hood sold in India, since 5 Sep 2024 for medium and large makers | ✓ the hood is a range hood under IS 302 (Part 2/Sec 31), so it needs its own BIS licence and lab test before any sale in India; budgeted as a pre-sale step (est.), same test plan as IEC 60335-2-31 |
| Gas leak: no electrical switching (LPG supplier guidance) | do not switch electrical items or fans on or off while gas may be in the air | ✓ when the home gas alarm is heard and no flame is lit, the hood holds its fan and lamps exactly as they are (never switches them on or off) and the voice call tells the family to open windows and close the regulator |
Home use. Not a certified gas detector, smoke alarm or automatic shut-off: it hears the home's own alarms, makes the kitchen's watch calls and alerts. IEC 60335-2-31 and radio certification to be done before sale.
One piece of equipment does
Not done by the equipment, and why
Makes the call itself
With nobody else at home, the hood makes every kitchen call itself: it glows and sounds at the hood first, so the cook can come back, and calls the family only if the call stands (burner still lit with the kitchen empty, a pan still heating, an alarm still sounding). Calls it is unsure of go to the family app as unsure, with the heat frames, and are never sent as an alarm.
| Call | Who decides | How it sees it | How players see the call · if unsure |
|---|---|---|---|
| Burner left on with the kitchen empty< 1 s after the limit · about 97 % of lit burners seen (est.) | The equipment | thermal camera, presence radar; burner heat tracker + presence timer (limit set by the family, default 5 min) | Amber light and a tone on the hood, then the family call. Under 85 % confidence (steam, a hot pan just taken off): unsure, heat frames to the app, no family call |
| Pan heating dry, oil smoking, boil-over or flare< 2 s · about 90 % (est.) | The equipment | thermal camera, radar; int8 classifier on the pan's heat curve and shape | Red light, fast tone, fan to full, alert. Under 80 % confidence: amber, not red, and unsure in the app |
| Pressure-cooker whistle count reached< 1 s · about 95 % of whistles counted (est.) | The equipment | mic, thermal camera (cooker on a lit burner); whistle template match gated by a hot cooker | Blue light and a chime at the target. A whistle-like sound with no hot cooker is ignored; a doubtful whistle shows as ? in the app |
| The home's own smoke or gas-leak alarm is sounding< 10 s · about 95 % (est.) | The equipment | mic; T3/T4 tone grammar + int8 CNN (AlarmEcho) | Red light on the hood, alert and voice call; for a gas alarm with no flame lit the fan and lamps are held as they are (no switching while gas may be in the air). Under 80 %: unsure alert to the family, no voice call |
| Hood fan speed< 2 s · comfort call, not a safety call | The equipment | thermal camera; cooking heat to fan speed curve | Fan speed shown on the fascia light. The touch strip always overrides |
| Night or odd-hour cooking< 1 min · about 85 % (est.) | Helps the official | thermal camera, radar, clock; the cook's usual hours learned over 14 days | App note, no light. Info only; the family decides whether to call |
| Gas used and refill due (est.)daily · about ± 15 % (est.) | Helps the official | thermal camera (flame time per burner); flame-hours times burner rating | App. Shown as an estimate only |
| Kitchen not used by the usual timeat the usual time + a margin the family sets (default 90 min) · not rated until home trials (est.) | Helps the official | presence radar; daily kitchen routine learned over 14 days (first visit and cooking times) | App note to the family, no light or tone. Info only and never an alarm; holidays and away days set in the app turn it off |
Nothing added to the field
The only things in play are the items the laws already put there:
The hob, the cylinder and the home's own gas alarm stay as they are; no pod on the wall, no deck under the cylinder, no plug
Built to take the hits
Secure by design
No. A hood cannot close a gas valve, and it does not put out fires. It makes the call, glows and sounds at the hood so the cook can act, sets the fan, and calls the family if the call still stands. A certified shut-off valve is a separate, installed product. It is a monitor-and-alert aid.
$369 per hood plus $3 a month for family alerts and calls. A plain 60 cm chimney is about Rs 11,800-16,000 (about $155), so you pay about $214 more for a hood that watches the cooking. A certified stove guard (Innohome, Firechief FSW1) costs about £400 in the UK, needs an electrician and cuts power to electric hobs only; it cannot see a gas flame, count whistles or call the family. Our separate kitchen products plus a plain hood would cost about $414 in the first year; KitchenOne is about $405.
No camera images at all. The heat camera sees a 32 x 24 grid of temperatures, and sound is processed in memory and never recorded. Only signed calls leave the hood.
KitchenGuard, StoveSentry and CookerCount. Their pages now link here. GasLock (weighing the LPG cylinder) and AlarmEcho (alarms elsewhere in the home) stay listed, because the hood cannot weigh the cylinder or hear the bedroom.
No. Keep your certified gas-leak and smoke alarms; the hood hears them and tells the family. LPG sinks to the floor, so a sensor in a hood would miss it.
No. LPG suppliers say not to switch any fan or electrical item on or off while gas may be in the air, and to open doors and windows instead. When KitchenOne hears your gas alarm and no burner is lit, it keeps the fan and lamps exactly as they are, glows red, and the call tells the family to open the windows and close the regulator. Some new chimneys switch their fan on when they smell gas; we chose not to.
It says unsure. Unsure calls go to the app with the heat clip and never ring the family as an alarm.
It is a standard 60 cm chimney hood on the same bracket and duct, hung at least 650 mm above a gas hob (we fit at 700 mm), or higher if your hob's instructions say so.
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DetailsKitchenOne
Concept · target $369