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WSAL21653 – OV9281-110 Camera/en

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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

Technical overview of the Waveshare OV9281-110: a 1MP monochrome sensor module with global shutter, CSI connection and libcamera control for all Raspberry Pi boards.

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Technical overview

  • Sensor: OV9281, monochrome, 1 megapixel, global shutter.
  • Connection: CSI port; on the Raspberry Pi 5 two CSI ports are available, both usable.
  • Supported boards: All Raspberry Pi models (including Compute Module).
  • Recommended driver: libcamera; according to the source, Raspicam is not supported for the OV9281.
  • Configuration: Set "camera_auto_detect=0" in config.txt and add "dtoverlay=ov9281".
  • Preview: "sudo libcamera-hello -t 0" opens a persistent preview; close via Alt+F4 or Ctrl+C in the terminal.
  • JPEG capture: "libcamera-jpeg -o test.jpg -t 2000 --width 640 --height 480" saves a full-frame JPEG.
  • Exposure control: "--shutter 20000 --gain 1.5" sets exposure time and gain manually.
  • Stereoscopic setup: Two cameras are distinguished via "cam0"/"cam1", e.g. "dtparam=imx219,cam0" and "dtparam=ov5647,cam1".
  • Tuning files: Libcamera loads a tuning profile per camera; if deviations occur, a custom JSON file can be loaded, e.g. "--tuning-file /path/to/file.json".

Commands and examples – verify before use:  

sudo libcamera-hello -t 0
libcamera-jpeg -o test.jpg -t 2000 --width 640 --height 480
libcamera-jpeg -o test.jpg -t 2000 --shutter 20000 --gain 1.5
sudo nano /boot/config.txt
sudo nano /boot/firmware/config.txt

Notes and version constraints

  • Exact compatibility with specific board revisions depends on the firmware version; verify before purchase that the board provides the required CSI pins.
  • When using the Compute Module, the exact location of the CSI port on the carrier system must be confirmed.
  • Adding an external JSON file (e.g., for IMX290) requires network access and correct permissions.
  • If image quality is insufficient, a custom tuning profile should be created and tested.
  • All commands must be run with root privileges; incorrect configurations may prevent the system from booting.

Source and revision record

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