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  1. J

    Millipede project question

    I have a question about the millipede project (http://www.electronics-lab.com/projects/games/002/index.html). What the heck are "PagerMotors" and where do I get them? Thanks!
  2. J

    Mystery voltage on input pins of 7408N (AND)

    In building another project I need to whip together some AND gate logic. Basically I want to produce high output if and only if my two inputs are high. Easy stuff, right? Everything seemed to be going well, but my output wasn't what I expected. In diagnosing the circuit (I stripped it down to...
  3. J

    12 Key Matrix Encoded Keypad Question

    Does anybody have a good circuit diagram for how to hook up a matrix encoded keypad. It doesn't have to be 12 key, that's just what I have. If, say, you have one for a 16 key, I can extrapolate. I am trying to get this sucker breadboarded and it's driving me crazy. I's appreciate any help. Just...
  4. J

    MAKE Magazine

    I did a search for this, so if it's redundant, I apologize in advance. I'm not affiliated with the magazine, other than I am an author of books from the same publisher (O'Reilly). This magazine is great. But I've wondered if anyone else has had problems with parts availability. That's my main...
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