IrCam

IrCam turns the InfiRay P2 Pro USB-C thermal camera into a live thermal viewfinder with real temperature measurement on Sailfish OS. The camera is a standard UVC device, so the kernel presents it as /dev/videoN and the app reads it over V4L2 - no udev rule and no sandbox hole needed. It decodes the camera's own 16-bit per-pixel temperature plane, so the readings come from the sensor, not from the colours. Everything runs on the device - no network, no cloud, no telemetry.

WHAT IT DOES
- Live thermal view in every orientation, with a choice of palettes (Lava/Inferno, Ironbow, Rainbow, White-hot, Black-hot, and Grey with only the hottest peaks in red). Pinch to zoom, drag to pan, double-tap to cycle zoom.
- Temperature from the camera's own 16-bit data: the hottest and coldest spot, an optional centre spot, and up to six tap-to-place measurement points, each with its reading, plus a colour bar scaled to the picture.
- Automatic temperature scaling that follows the scene but never stretches the palette across less than a few degrees, so a nearly uniform scene stays soft instead of blowing up into a white blob.
- Sharpening in three steps - Off, Normal, Superfine - to bring out fine detail in the low-resolution sensor picture.
- Calibration offset: nudge every reading up or down to match a known reference, since the sensor is not calibrated in absolute terms.
- Celsius or Fahrenheit throughout.
- Overlays you toggle from the viewfinder, burnt identically into both snapshots and videos: the min/max readout, the centre spot, the colour bar, a date-and-time stamp, and a location line with GPS coordinates in decimal, nautical or navigation format.
- Snapshots as JPEG in ~/Pictures/IrCam at three times the sensor resolution; optionally the raw per-pixel temperature grid as CSV next to each picture.
- Video recording of the composed view - all overlays, including the live coordinates, burnt in - as compressed VP8/WebM, with a compression slider in the settings.
- Use the camera facing away or facing you: a user-facing camera turns the wrong way in landscape, so when you turn it around switch on "Camera points at me". The plug/lens direction cannot be detected automatically, so this is a manual switch.
- Gallery - swipe the centre of a picture to step through captures, play back videos, rename, delete and share from the pulley.
- Camera database with auto-detection: known cameras are recognised by their USB id and stream format; an unknown UVC camera is probed and shown image-only. See the table of supported cameras and your camera's own measured values on the camera page, save a detected camera, and export a data point to help add support for more models.

SUPPORTED HARDWARE
The InfiRay P2 Pro (USB 0bda:5830), a 256x192 USB-C thermal camera. It is a standard UVC device presented as /dev/videoN and read over V4L2; the stream is 256x384 - the picture on top, a 16-bit temperature value per pixel underneath. Cameras of the same family with the same stream layout (e.g. the Topdon TC001) are likely to work but have not been tested. Unknown UVC cameras are auto-probed and can be shown image-only, and the built-in camera database is meant to grow from the data points users export.

A NOTE ON ACCURACY
Temperatures are what the sensor reports, corrected only by the offset you can set. Readings depend on the emissivity of the surface: matte paint, skin, wood and most plastics read well; bare or shiny metal reflects its surroundings and reads far too low. Treat the readings as a guide, not a calibrated measurement.

STATUS
Shared as is, no warranty (GPLv3). Built and tested on a Sony Xperia 10 III with an InfiRay P2 Pro. Needs USB host mode (an OTG adapter) and a data-capable USB-C connection.

ARCHITECTURES
aarch64 (Sailfish OS 5.0+). No armv7hl build.

Written with Claude Code (Anthropic).

Source, issues, releases: https://github.com/JimKnopfIoT/harbour-ircam