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Got something cooking :)
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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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Originally posted by LtKojak View PostYou 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.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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Originally posted by LtKojak View PostYou 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.
Programming is done
Still a ways to go but got stuff working nicely now..
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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 workIf I have a 50% chance of guessing the right answer, I guess wrong 80% of the time.
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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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