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Homebrew Digital Picture Frame w/Remote

feagle814 writes "I've always wanted to create one of those digital picture frames out of an old laptop, and on the heels of a recent slashdot story, I've written up my Digital Picture Frame project. What's unique about this particular incarnation of the digital picture frame is that mine includes a homebrew remote control recognizer made out of a programmable IC, the Microchip PIC16F628. The article discusses everything from design considerations to custom slideshow software, all the way to final presentation, with lots of photos along the way."

2 of 110 comments (clear)

  1. Re:From the article about batteries. by YggdrasilOS · · Score: 5, Informative

    I think you have your terms confused:

    Isotopes are stable atom configurations which have an electically neutral charge, differing only in the number of neutrons.

    Ions, on the gripping hand, are chemically excited atoms which have gained or lost valence electrons (according to their electronegativity) and become reactive.

    This is, in fact, what makes Li+ ions useful for battery cells in the first place. Whether alkaline, NiCad , NiMH, or LiIon, chemical batteries all work on the principle that the sustained chemical reaction will produce a useful amount of electricity.

    When we "recharge" our batteries, we simply apply current to the battery in such a way as to reverse the chemical reaction.

    What they've done is introduced stabilizers to retard the rate of reaction, so that rather than exploding upon atmospheric exposure, the battery solution simply gets warm.

    --
    "We dwell within a silent country, beyond the reach of time and death" -Nothing Sophotech, The Golden Transcendence
  2. Re:Analog by mdamaged · · Score: 5, Informative
    --
    Someone asked me the difference between ignorance and apathy, I told them I don't know and I don't care.