1. #1
    Hope someone can help here....

    Wiring up the MPG I bought, I have installed a BOB (one of Gary's) which is a very simple (no opto-isolation etc.) type.

    I have set Mach3 and my Smoothstepper to look for a second port and set them both to take pins 2-9 on port 2 as inputs for the axis selection and step multiplier. It looks from a little bit of research, that I may need a 10K resistor wired like so to get Mach to read pins 2-9 as inputs. My question is what type of resistor should I buy?

    On Ebay I see carbon film, mtal film, carbon composite and so on, is one type more suitable for my use?

    Thanks for any advice.

    Nothing is foolproof......to a sufficiently talented fool!

  2. #2
    The resistor type for this application isn't important at all, as it's just a pull-up on a logic signal, so doesn't need to be anything special.

    In terms of quality, metal oxide is probably the best, but to be honest, I'd just use a cheaper carbon film one. One with an 1/8th watt, or 1/4 watt, rating will be more than adequate.

    Hope this helps.


  3. #3
    Cheers Jeremy, thats a lot of help.
    Nothing is foolproof......to a sufficiently talented fool!

  4. I'v got some 0.25w Carbon film ones if they are of any use?

  5. #5
    Thanks for the offer Lee but my love affair with eBay continues with 100 for 1.99 :)
    Nothing is foolproof......to a sufficiently talented fool!

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