Model 2 - Live transmission of moving images


Hardware chain

  • Axis 2100 WebCam...to...
  • Spread spectrum radio...to...
  • Base-station laptop...to...
  • Cell- or satellite phone link...to...
  • ISP...to...
  • Web-server and web-page...to...
  • Internet...to...
  • Office-based expert

Construction Notes

Axis 2100

1. Connect the Axis to an ethernet. Give it an IP. Upgrade the flash to 2.12, according to the Axis website. This is vital - I couldn't get anything to work with the 2.02 software pre-installed. Reset the machine (via web, or via control switch).

2. Open a dial-up connection via your serial port at 115,700 baud. Try it first with the included serial null modem cable. Any phone number works. Use the username `root' and password `pass'. Unlike the manual says, just any name will not work. Watch the debug log to see what is or is not working.

3. I could not get the automatic DNS facility to work with linux (it did work fine with Windows). But not to worry. Watch your /var/log/messages file to see which IP gets assigned to the Axis; for me it is usually 192.36.253.80. Enter http://192.36.253.80 into your web-browser, and you'll see the image. Configure the image with the layout options.

4. Now the wireless part. Set the baud rate for the FreeWaves to 115,700 (with minicom or hyperterm). Now, use a straight serial from the FreeWave to the Axis, and another connecting the FreeWave and the computer. Switch it all on, and voila! Hopefully! You should have radio-video-monitoring to 20 km away.


Supplies

Name Product Page My Supplier Approx. Cost ($) Notes
. . . . .
Freewave DGR-115R FreeWave FreeWave 1,170 each 902-928 MHz, 115kB Spread Spectrum wireless data transceiver. 12 V. Need 2.
Freewave Antenna EAN0910NB FreeWave FreeWave 100 each 890-940 MHz, 3 dB open coil 12'' omnidirectional antenna. Need 2.
Axis 2100 WebCam Server Axis A1 WebCams 400 .



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