Romit2 VPU

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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.

Contents

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