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WSAL20465 – MLX90641-D55 Thermal Camera/en

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Version vom 6. September 2026, 00:38 Uhr von JWTechPublisher (Diskussion | Beiträge) (Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex)
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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

Compact I2C IR camera with 16×12 pixels, 55° FOV and programmable frame rate; for non-contact temperature measurement in industrial and smart-control applications.

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Technical overview

  • Resolution: 16 × 12 pixels (768 IR sensors total)
  • Interface: I2C, high-speed mode up to 1 MHz, default address 0x33
  • Operating voltage: 3.3 V / 5 V; current draw ≈ 12 mA
  • Field of view: 55° horizontal, 35° vertical
  • Operating temperature: -40 °C to 125 °C; target temperature range: -40 °C to 300 °C
  • Accuracy: ±2 °C at ambient 0–50 °C
  • Frame rate: 0.5 Hz to 64 Hz, configurable via control register 0x800D
  • Dimensions: 28 mm × 16 mm, mounting hole 2.0 mm
  • Reading patterns: chess pattern (factory default) or TV interleave
  • Measurement principle: weighted average of object temperature within FOV; object should be fully inside the field of view

Commands and examples – verify before use:  

sudo raspi-config
cd ~
wget https://files.waveshare.com/upload/d/d9/Mlx90641-D55_Thermal_Camera_Code.zip
unzip Mlx90641-D55_Thermal_Camera_Code.zip
cd Mlx90641-D55_Thermal_Camera_Code/raspberrypi/cpp/
chmod +x install.sh
sudo ./install.sh
make
sudo ./main
sudo nano /boot/config.txt
dtparam=i2c1_baudrate=1000000

Notes and version constraints

  • The source contains conflicting resolution data: the title states 32×24, while the body text says 16×12 pixels. Product metadata confirms 16×12 – please verify before publishing.
  • Up to four bad pixels may occur; they are marked in the EEPROM and are stated not to be covered by warranty. Recommendation: average neighboring pixel values.
  • When using on Raspberry Pi: avoid static discharge, check power polarity, do not unplug cables during operation and avoid strong vibration (EEPROM can be damaged).
  • The listed commands refer to a specific Waveshare firmware/code version; compatibility with other MCU platforms (STM32, ESP32) is only described as a wiring diagram in the source, without executable commands.
  • The FAQ section mistakenly mentions MLX90640 instead of MLX90641 – possible typo in the source; detection distance (detectable at ~1 m, contour lost at 5 m) applies only under the stated test conditions (room temp 26 °C, dim light).

Source and revision record

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