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  • Got something cooking :)

    More info later
    Click image for larger version

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    Last edited by Claus H; 03-15-2019, 09:14 AM. Reason: Title

  • #2
    arduino a 2x16 (?) and lots of wire - I like where this is going!
    Waiting for your update...

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    • #3
      Cool idea!

      Hmmm... DC resistance measurement is easy. So is the resonant frequency and 3dB bandwidth provided you know the driving level of a sine wave stimulus. From that info you can calculate the L and C.


      I think you can do it with a square wave source too but there will probably be some compensation required for the effect of all the harmonics - I need to think about that.
      Experience is something you get, just after you really needed it.

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      • #4
        Originally posted by Claus H View Post
        More info later
        [ATTACH=CONFIG]52939[/ATTACH]
        You need to incorporate the capability of measuring TEMPERATURE. Then it'll be really useful as a tool for both p'up makers and aficionados as well.
        Pepe aka Lt. Kojak
        Milano, Italy

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        • #5
          Originally posted by LtKojak View Post
          You need to incorporate the capability of measuring TEMPERATURE. Then it'll be really useful as a tool for both p'up makers and aficionados as well.
          Thanks guys!!! I am working on getting it accurate and reliable even with a 9 volt battery supply, it will feature Gauss metering, and Resonant Peek, Inductance, Capacitance, DC resistance it can do all of it now, but still jumping around some wires need a few good reed relays, but it's getting close, it does sine waves for the resonant peek and Induction/capacitance, and some math it's relative simple circuit, but with a lot of tolerances and stray capacitance, you need to stay on top of to get the thing working! Arduino code is also quite simple would love some more resolution the 10bit ADC is OK, I love to work with the constraint of simple yet smart design, I could slap a lot of circuitry on the thing to get it going, but have been scaling down the last month or so of design, got the thing working fine but it just go messy, so started over..

          It's looking good now, need a good switching regulator design, and the reed relays.. It will be all self contained with a couple of clips for the pickup wire, and a gauss probe..

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          • #6
            Hi Claus

            I'll be up for one of these when your finished, seems very elegant. I'd be quite happy to supply my own enclosure. Pepe's got a good point about a temperature sensor as dc resistance in a pickup varies quite a bit with temperature.

            Cheers

            Andrew

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            • #7
              Originally posted by LtKojak View Post
              You need to incorporate the capability of measuring TEMPERATURE. Then it'll be really useful as a tool for both p'up makers and aficionados as well.
              Temperature sensor will be on the back of the gauss sensor..
              Programming is done
              Still a ways to go but got stuff working nicely now..Click image for larger version

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              • #8
                I'm assuming you are using the on board 10bit-ADC in the arduino. If you want better resolution, the ADS1115 16-Bit ADC is pretty cheap. It's 4-channel with programmable gain (I think). Maybe a little overkill and quick search will probably yield some other options, but it's just a thought.

                great project idea though! nice work
                If I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.

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                • #9
                  Please consider adding a DC impulse coil for coil polarity sensing on humbuckers.

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                  • #10
                    Originally posted by David King View Post
                    Please consider adding a DC impulse coil for coil polarity sensing on humbuckers.
                    Will do

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                    • #11
                      Hi Klaus

                      Any updates? you've whet my appetite !!!

                      Cheers

                      Andrew

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                      • #12
                        Originally posted by the great waldo View Post
                        Hi Klaus

                        Any updates? you've whet my appetite !!!

                        Cheers

                        Andrew
                        Yes finaly got the phase checker finished..

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                        • #13
                          Originally posted by the great waldo View Post
                          Hi Klaus

                          Any updates? you've whet my appetite !!!

                          Cheers

                          Andrew
                          Phase indicator done..
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                          Click image for larger version

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                          • #14
                            Hi Klaus

                            IT's looking very good.,
                            Cheers
                            Andrew

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                            • #15
                              looks good!
                              Am reminded of one of my favorite quotes:
                              Je n'ai fait celle-ci plus longue que parce que je n'ai pas eu le loisir de la faire plus courte.
                              I would have written a shorter letter, but I did not have the time.

                              Blaise Pascal

                              By this I mean don't try to make it do everything conciseness is a difficult but desirable goal IMHO.

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