klotz: infrared*

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  1. Waveshare offers a long-wave infrared thermal imaging camera module designed for Raspberry Pi and other platforms, featuring an 80×62 pixel array using hybrid microbolometer and thermopile technology. The device can generate thermal images by converting field of view data into surface temperature readings and is suitable for various industrial and intelligent control applications like motion detection or heat trend analysis. It is available in two main formats: a HAT version with a 40-pin GPIO header and a USB version with a Type-C port, both offering options for basic (45° FOV) or wide-angle (90° FOV) lenses.

    - Features an 80x62 pixel array with a shutterless design for continuous video streaming up to 25 FPS.
    - Provides a Noise Equivalent Temperature Difference (NETD) of 150mK RMS at a 1Hz refresh rate.
    - Supports temperature measurements ranging from -20°C to 400°C with an accuracy of ±2℃ in ambient temperatures between 10-70°C.
    - Compatible with Raspberry Pi boards (including Zero and 5), Windows PCs, and Android phones via the respective connector versions.
  2. i12bp8 writes about TagTinker, a Flipper Zero app for exploring infrared electronic shelf-label (ESL) protocols, enabling users to transmit custom images and text to supported e-ink graphics tags. The project bundles a browser-based image preparer with dithering and colour quantisation, NFC tag scanning for auto-identifying ESL targets, and optional WiFi plugins via an ESP32-S2 bridge that render live designs (crypto prices, weather, GitHub profiles) through a Cloudflare Worker without reflashing the Flipper.
    - Security relies entirely on protocol obscurity; the Flipper team noted the IR signal is "same that you use in TV remotes"
    - Tags store firmware in volatile RAM, so removing the battery permanently bricks them
    - A sub-$5 ESP32 + IR LED setup replicates the functionality without a Flipper Zero
    - The web preparer uses Oklab 3-colour quantisation with Floyd-Steinberg, Atkinson, or Bayer dithering
    - Supports monochrome and accent-colour (red/yellow) tags including SmartTAG Color 2.6 (type 1626)
  3. Adafruit showcases the Raspberry Pi cam combined with the MLX90640 IR camera to create a budget fusion thermal camera. Featuring solderless components, this build is also beginner-friendly.
  4. Waveshare has launched an ESP32-S3-based thermal imaging camera module with 80x62 resolution, offering both 45° and 90° wide angle versions. The module includes a USB-C port, expansion pads, and supports WiFi and Bluetooth LE.
  5. The paper presents near-infrared interferometric imaging of the dust-enshrouded red supergiant WOH G64 located in the Large Magellanic Cloud, revealing elongated compact emission and a significant change in the near-infrared spectrum suggesting the formation of hot new dust close to the star.
    2024-12-03 Tags: , , , , by klotz
  6. "Here, infrared imaging is demonstrated by nonlinear up-conversion to the visible in an ultra-compact, high-quality-factor lithium niobate resonant metasurface. Images with high conversion efficiency and resolution quality are obtained despite the strong nonlocality of the metasurface. The possibility of edge-detection image processing augmented with direct up-conversion imaging for advanced night vision applications is further shown."
  7. 2018-07-30 Tags: , , , , by klotz
  8. 2017-07-29 Tags: , , , , , , by klotz

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