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Six layers, drawn in from day one.

A compact thermal camera, drawn as a system sheet with the six layers we design into connected products now. Each row names the decision the layer forces and, where there is one, the standard it answers to; its number matches the drawing.

1. thermal core uncooled lwir

   An uncooled long-wave infrared microbolometer sees heat, not visible light. Ordinary glass is opaque at those wavelengths, so the window is germanium; the core drifts as it warms, so a shutter closes for a moment and every pixel is corrected against a uniform field. Optics, sealing and the heat path through the case are designed around the sensor, not after it.

2. on-device inference mcu + μnpu

   A microcontroller with a small neural accelerator finds the hotspot on the device, so an alert needs no cloud round-trip and no image has to leave it. Memory traffic, not the advertised operations per second, often sets the real latency, so the model and its memory are sized together.

3. visible + thermal image fusion

   A thermal image is low in resolution and soft at the edges; a small visible camera beside the window adds the outlines that make it readable. The two lenses sit close and parallel, because the gap between them is a parallax error that changes with distance.

4. app link ble 6.0 + wi-fi

   Bluetooth LE pairs the camera and keeps the link awake for almost nothing; Wi-Fi carries live view and full radiometric files to the phone. Bluetooth 6.0 channel sounding adds secure proximity: enough to know the phone is at hand, not to place it precisely in a room.

   standard S1 alsoMatter over Thread, where a product joins the home: one device across the main home ecosystems, with a poll interval chosen for the battery on purpose. S2

5. secure updates signed · a/b slots

   Signed images, A/B slots and rollback protection, so the update path isn't an open door and an old, vulnerable build can't be pushed back on. A disclosure policy and a support period are designed in with it, because the CRA and Australia's smart-device rules require both, on fixed dates.

   standards S4 S5

6. repair user-replaceable cells

   The rear housing comes off with four standard screws into brass inserts, and the cells lift out of their cradle: no glue, no heat, no special tools, and no software lock-out of compatible cells. Decided before tooling, when it costs a screw boss rather than a redesign.

   standard S3

the standards

The dates the architecture answers to.

Two releases that change what a connected product can do, and three rules that put dates on how it is built, updated and repaired. Each one moves a decision we make early: the radio, the stack, the fastener, the update path.

on the watch list

The next tier, watched early.

Not in the drawing yet, and worth knowing before an architecture freezes.

1. ambient iot batteryless

   Devices that run on harvested light, heat or radio, with power budgets in microwatts. It changes what can carry a sensor: a label, a seal, a tag that never needs a cell.

2. rings as input

   A battery-free ring read by a coil in a wristband, or a small camera ring that controls whatever it points at. Input moves off the product and onto the hand.

3. wi-fi sensing 802.11bf

   The radio already in the product becomes a sensor for presence, gestures and counting, with no camera in the room. A privacy decision as much as a sensing one.

4. 60 ghz radar presence + vital signs

   A radar chip a few millimetres across reads presence, breathing and heart rate without contact, which makes it the sensor for rooms where a lens isn't welcome.

5. language models on the device

   Phone-class language models work. Sustained use is a heat and memory-bandwidth problem, so the enclosure and the power budget become part of the AI design.

6. post-quantum, embedded

   Post-quantum cryptography is now practical for secure boot, communication and updates on embedded parts, with the algorithm chosen per use case and the memory for it reserved early.

how skeelx helps

What we bring to a connected product.

typical engagements

Where we're usually called in.

• 0→1 connected product: hardware, app and cloud designed as one program
• Experience rescue when the device is good but the app is costing it reviews
• Gen-2 platform: keep the identity, fix the seams, cut the BOM
• Standards uplift: replaceable cells before 18 Feb 2027, a signed update path, Bluetooth 6.0 or Matter in the next revision
• Launch package: CGI library, films and motion identity for the release