mungewell

Agents of the Revolution
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Posts posted by mungewell


  1. Yep,CueCat was what it was.

    So it's worthless?

    Depends on what you want to do.... most applications mentioned use a camera to 'see' and decode the barcode.

    CCD devices are not as accurate as line/laser scanners (1D only) and don't cope well with smaller barcodes. They also require much processing on the host system. A RS232/USB/PS2 connected 'hardware' scanner can prevent loading the host down.

    Cheers,

    Mungewell.

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  2. It involved using a (free) barcode scanner shaped like a cat and some software.

    Nah, that's old hat....... mobile barcodes is where it is at!!

    There are tonnes of downloads for 2D barcode scanners/decoders, which when installled on your cell phone can direct your mobile browser to the URL encoded in the barcode. Japan has been doing this for years and it appears that this is the year that it is coming to North America.

    The main formats are 'QR Codes' and 'DataMatrix', but there are a few propriatory codes (Microsoft Tag for example).

    The best site I have found so far is:

    http://www.semapedia.org

    which provides 3rd party download links for a large number of scanner applications.

    There are also a lot of 'barcode' links here:

    http://code.google.com/p/zxing/wiki/InterestingLinks

    Have fun,

    Mungewell.

    PS> Yes, I'm a barcode geek!

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  3. Does the webmail server provide other methods of connection, IMAP for example?

    If so you could connect with a desktop client via IMAP and copy all the emails to a local folder.

    Cheers,

    Mungewell.

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  4. For VGA to Composite/RGB you can build cables that merge V-Sync and H-Sync together well enough to sync a TV, but they're pretty nasty and need control of the display refresh rate etc. You can do this relatively easily with an X modeline, or even by hacking the console settings (can't remember the name of the app right now.... it was 10 years ago that I was playing with this).

    For your iBook you could try another way, firewire. A cheap/broken mini-DV camcorder should be able to render streamed DV out of a composite port and into a TV.

    Mungewell

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  5. What are you trying to achieve? I'm guessing access to machine(s) on you LAN from the outside world. Is this just access for yourself, or are you attempting to run a service for (random) other people?

    You could have a machine inside you LAN make an outgoing connection to a VPN service. This will allow you to connect into your LAN from the outside/internet (via the VPN).

    Cheers,

    Mungewell

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  6. But I haven't figured out how to make Ubuntu use it yet. It sees it. But I've been too lazy to figure out the next step.

    It should just provide the appropriate devices (/dev/ttyS0, etc).... unless it's a 'funny' card.

    What does 'lspci --vv' say about the card?

    Mungewell.

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  7. What are the best solutions that work well in both Windows and Linux?

    Mostly USB serial adapters will 'just work', they will appear on '/dev/ttyUSBS0' or '/dev/ttyACM0'. I have tried multiple ones (both stand alone and within USB docking stations).

    On thing is that the timing of a USB device is not guarenteed, so if you application is really sensitive to timing you may have problems with USB Serial. Sometime the 'drive' capability of these USB serial adapters is weak, so you might have problems if the circuitry is passively powered from the RS232 signals.

    Cheers,

    Mungewell.

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  8. I would do a 'lsmod' whilst the BT device is working, this should give you an idea of which modules are being used to control the device.

    You can then (as root/sudo) use 'rmmod' and 'modprobe' to remove and reinstall the relevant modules. There may be several modules associated with providing functionality, but one of them would presumably handle loading the firmware into the device.

    Cheers,

    Mungewell.

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  9. I'm not convinced that you mean to 'cluster', what application(s) are you hoping to improve the processing power of? Clustered system usually have a specific task in mind, such as agressive computation, etc.

    Linux, by default, give you the power the run remote applications (where application is running on machine and displaying on another). A more 'co-ordinated' version of this is the LTSP (Linux Terminal Server Project). LTSP can also be configured to run some applications which would require a lot of X bandwidth locally.

    If you simple want to play with Linux PMI just because you can.... then good luck, let us know how it pans outl!

    Cheers,

    Mungewell.

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