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Arduino Oscilloscope with Processing.

e14 Contributor

Hi, I think this would be a highly useful build for those viewers on a budget. Not all of us have the ability to buy a oscilloscope so I think this would be replicated by a lot of people. It would run a processing sketch that would display a few different channels in different colors like red, green, or blue. And it wouldn't be big, it would be somewhat a compact package with an arduino and anything else that would make it work.

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  • in reply to shabaz

    While those projects are good and all, they're not really what I'm looking for, though the last url was the closest idea I had. I'm thinking a small compact unit with just a few passives to make sure the Arduino can handle it. (example. resistors to bring down currents then in the sketch it would boost the current to match the actual current.) - Thank you for some examples though.

  • in reply to e14 Contributor

    You really can't make much of a scope with an Arduino because the ADC is much too slow - for  a reasonable scope you need at least 100M samples per second per channel (even the really cheap Rigol and similar ones do this).  Even the fancy Arduinos based on ARMs can't cope.

    To make a scope you need a decent front end (amplifier with adjustable gain), a fastish ADC and something to process the data (usually an FPGA or custom chip) - once you've put all that on a shield the Arduino isn't really bringing much the the party.

    The Red Pitaya is a not bad effort to make a cheap single board scope from standard bits but it costs about £300 - you could buy  a Rigol or a Pico for the same money and it would work a whole lot better (but you couldn't reprogramme it yourself).

     

    MK