Difference between revisions of "Romit2 VPU"

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(Camera)
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Following cameras have been evaluated:
 
Following cameras have been evaluated:
 
* [http://www.gumstix.com/store/product_info.php?products_id=260 Caspa VL] from [http://www.gumstix.com Gumstix] – Cheap camera that connects to the camera interface of the Overo. Very few parameters to adjust and [http://www.flickr.com/photos/csete/6131450770/in/set-72157627610527002 unacceptable image quality].
 
* [http://www.gumstix.com/store/product_info.php?products_id=260 Caspa VL] from [http://www.gumstix.com Gumstix] – Cheap camera that connects to the camera interface of the Overo. Very few parameters to adjust and [http://www.flickr.com/photos/csete/6131450770/in/set-72157627610527002 unacceptable image quality].
* [[:Category:Cameras|Logitech UVC cameras]] – Takes [http://www.flickr.com/photos/csete/6134600302/in/set-72157627610527002/ very good images] and has very well supported control interface. Unfortunately, Gumstix Overo USB doesn't seem to have sufficient bandwidth to achieve sufficient framerates at VGA resolution.
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* [[:Category:Cameras|Logitech UVC cameras]] – Takes [http://www.flickr.com/photos/csete/6134600302/in/set-72157627610527002/ very good images] and has very well supported control interface. Unfortunately, Gumstix Overo USB doesn't seem to have sufficient bandwidth to achieve sufficient framerates at VGA resolution (because Tobi uses USB ethernet adapter?).
 
* [http://www.e-consystems.com/omapovero.asp e-CAM32] and [http://www.e-consystems.com/5MP-Custom-Lens-camera-gstix.asp e-CAM50] with custom lens by [http://www.e-consystems.com/ e-Con Systems] – Connects to the camera interface of the Overo. Takes [http://www.flickr.com/photos/csete/6227676064/in/set-72157627610527002/ surprisingly good images] and has many adjustable parameters.
 
* [http://www.e-consystems.com/omapovero.asp e-CAM32] and [http://www.e-consystems.com/5MP-Custom-Lens-camera-gstix.asp e-CAM50] with custom lens by [http://www.e-consystems.com/ e-Con Systems] – Connects to the camera interface of the Overo. Takes [http://www.flickr.com/photos/csete/6227676064/in/set-72157627610527002/ surprisingly good images] and has many adjustable parameters.
  

Revision as of 22:46, 6 December 2011

The Romit2 VPU is a video capturing and processing unit originally developed for the Romit2 cubesat. It is based on the Gumstix Overo Water computer board powered by an OMAP3530.

Overview

Functional specifications:

  • Capture video and still images
    • Video resolutions (TBC):
      • 1280x720 at ? fps
      • 640x480 at 5, 10 and 15fps
      • 320x480 at 5, 10, 15, 20, 25 and 30 fps
    • Still image resolutions (TBD):
      • 2592x1944
  • Encode video using H.264 codec
  • Encode images using JPG or PNG codec
  • Multiplex video and image data with telemetry data
  • Support both continuous video streaming as well as pre-programmed recording for later download
  • Command interface to allow adjusting camera and video processing parameters


Interface specification:

  • I2C control interface to microcontroller
  • McBSP data interface to 2.4 GHz transmitter
  • Power supply: 3.3 V
  • Logic level: 1.8 V

Performance:

  • Temperature range: -25° to 80° C
  • Vacuum
  • Fully functional within 10 seconds after power up
  • Immune against sudden loss of power


Camera

Following cameras have been evaluated:

Present work continues using the e-Con cameras.

Video processor

Software Components

Romit Linux

Test campaigns

Temperature testing

Vacuum testing

Vibration testing

High altitude balloon flight