TurnCup

How it fits together

TurnCup, 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.

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

1. 01

   The whole TurnCup

   Four caster cups weigh the bed. A hub finds which way the person lies, logs each turn and reminds the carer when one is due.

2. 02Brain

   XIAO ESP32-C3 (TurnClock)

   The brain: it runs the turnclock firmware program

3. 

   03

   Load cells in cups

   Weigh each bed leg; four cells make one 200 kg bridge

   XIAO ESP32-C3 (TurnClock) · 4-core shielded cable · Bridge signal per cup

4. 04

   Four HX711 amplifiers

   Turn each cup's signal into a 24-bit weight reading

   XIAO ESP32-C3 (TurnClock) · GPIO pins (shared clock) · Weight at 10 samples/s

5. 

   05

   2.9 in e-paper screen

   Shows time on this side and when the next turn is due

   XIAO ESP32-C3 (TurnClock) · SPI · Screen image, once a minute

6. 06

   ACK and TURNED buttons

   Carer confirms a reminder or logs a manual turn

   XIAO ESP32-C3 (TurnClock) · One analog pin (ladder) · Which button pressed

7. 07

   Bedside buzzer

   Sounds the reminder; off at night by default

   XIAO ESP32-C3 (TurnClock) · GPIO pin (FET gate) · Buzz on or off

8. 

   08

   FloorWatch radar (option)

   Spots a fall on the floor, only when the bed is empty

   XIAO ESP32-C6 · Wi-Fi (MQTT) · Fall or low-and-still alert

9. 09

   USB-C and 18650 backup

   Mains by USB-C; the cell keeps it running through a power cut

   XIAO ESP32-C3 (TurnClock) · USB-C 5 V lead · 5 V power

10. 10

    All connected

    8 key parts, one program, and your phone

How the parts connect

TurnCup, 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 TurnCup

void loop() {
  for (int i = 0; i < 4; i++) w[i] = hx[i].get_units(1);   // shared SCK on D6
  float M = w[0] + w[1] + w[2] + w[3];
  float copx = centreOfPressureX(w);
  bed.update(M, copx);                  // EMPTY, IN_BED, DISTURBED, SETTLING
  float dx = (copx * M - cop0 * M0) / patientMass;
  if (bed.state == IN_BED && abs(dx - dxLast) > 40 && heldFor(60)) {
    Side side = sideFromDx(dx);         // LEFT, BACK or RIGHT
    logTurn(side, bed.carerRecently() ? "carer" : "self");
    mqtt.publish("iemi/turncup/site/bed/event", turnJson(side));
    dxLast = dx;
  }
  if (minuteTick()) epaper.show(minutesSinceTurn, nextDue);
}

To your phone

How the data reaches TurnCup carer app

Carer phone on the home Wi-Fi

1. TurnClock hub
2. Wi-Fi · MQTT over TLS
3. Home app or care gateway
4. Push notification
5. Carer phone

Key specs

Targets for production units; they may change during development.

Pricing

Target pricing. Parts cost is about $225 per bed at qty 1 and about $95 at qty 100 (est.). NightWatch is included for care-home beds; the optional FloorWatch ceiling pod is $79 per room (target), about $47.50 in parts at qty 1 (est.).

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

1. 28 Oct 2026, 11:40LatestA care home or ward needs one thing at each bed that calls a resident getting up before they stand, someone on the floor and what a call is for, and fills the turn, fluid and hand-rub records, without a camera in a private room. CQC asks for the least intrusive option, a bed-exit signal is a Class I exempt bed-patient monitor (21 CFR 880.2400), and homes pay about $240 a room + $19.99 a month for a wall radar (Vayyar) on top of mats and call bells.

   • Now part of CareOne: https://iemilabs.com/products/careone/

   See it in 3DFull research and design

2. 27 Oct 2026, 03:45Owner decision (27 Oct 2026): merge our single-job products into multi-job devices.

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

   See it in 3DFull research and design

3. 26 Oct 2026, 02:25Care homes need to know before a resident at risk of falling is up at night, without the false alarms of sensor mats, and to find a resident on the floor fast when night staff are few. One trial found 35% of bed-exit alarms under traditional practice were false, Health Technology Wales found the evidence for mats uncertain, and University of Sheffield interviews with 15 care-home managers (BGS 2026) found long lies are worst overnight.

   • New CAD parts: FloorWatch ceiling pod case and lid with a 1.5 mm radar window; 13 bought-part checks pass, lid and case touch with 0 mm³ overlap
   • Hardware: Seeed 60 GHz fall-detection radar kit with an ESP32-C6, USB adapter and ceiling trunking; FloorWatch about $47.50 per room at qty 1 (est.), target $79
   • Software: per-resident alert stage (sit-up, edge or out of bed), a not-back-in-bed timer on the home's own limit, and FLOOR alerts only while the bed is empty
   • Design doc: dated section with 5 new sources, exit-stage, floor-coverage and power reports and 4 new tests; product page summary, highlights, use cases, specs and FAQs updated

   See it in 3DFull research and design

4. 25 Oct 2026, 06:25Repositioning adherence is poor and the paper chart is often one signature per shift (an NJ appellate case called that inadequate) → every position change is logged automatically with time, side and who did it, and the carer only taps when the sensor can't see a change

   • New design: 5 printed parts in code CAD, bought parts fit-checked
   • Market research, hardware list and use case written up
   • Design page and kit render published
   • Product page added

   See it in 3DFull research and design