Is it Possible to recreate a complete Analog circuit on a arduino

Former Member over 13 years ago

Sorry for the Noob question, but

Is it possible to program/recreate a complete analog circuit on a arduino chip

Thanks for any help

Del

fustiniadmin over 13 years ago

Hi Del,

I moved your question over here to the Arduino group where it should get more attention from Arduino experts.

Thanks,
Drew
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billabott over 13 years ago

The arduino's I/O pins come in two flavors: digital and analog. The analog pins contain a DAC (digital to analog converter) with a 10 bit resolution (as best I can recall; confirmed). So that is a 0 to 5 volt range broken into 1024 steps. The size of these steps is approx. 4.88 millivolts.

If this does not answer your question then you should supply some more contextual details.
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nermash over 13 years ago

Explaining what do you mean by "complete analog circuit" would probably help a lot...
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Former Member over 13 years ago in reply to nermash

Hi,

Sorry for the vagueness of my original post, the analog circuit I would like to recreate is a metal detector

I don't have the circuit diagram that I want to use but this is a circuit similar to the circuit I was wondering if possible to program a arduino to function like this circuit.

Sorry for the lack of information

Regards

Del

PDF of a similar circuit http://www.geotech1.com/pages/metdet/projects/coinshooter/coinshooter.pdf

Thanks
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billabott over 13 years ago in reply to Former Member

Oh, so possibly the real question here is: "How does one connect or interface an analog circuit to one of the I/O pins of the arduino?"

The answer clearly would be to carefully match the impedance of the two circuits with a not very expensive custom impedance matching circuit. This is not a non-trivial undertaking, even for experts.
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