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PC USB scope project

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by nigel wright, Sep 1, 2017.

  1. nigel wright

    nigel wright New Member

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    I have just finished a USB scope project.
    I took a USB project from www.waitingforfriday.com and converted it for my own needs.
    It uses a PIC18F4550 to read in analogue data, convert it to digital then send it via the USB bus to the PC for display.
    I added an analogue data multiplexor on the input so I can switch in different resistors for different voltage ranges.
    I can get up to 270,000 samples per second on the A2D, which gives upto 10KHZ sine wave display.

    I also managed to find a fast fourier transform function online so I can display frequency content of the analogue signal.
     
  2. dr pepper

    dr pepper Well-Known Member

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    Have any pics we can look at?
     
  3. nigel wright

    nigel wright New Member

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  4. dave

    Dave New Member

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  5. dr pepper

    dr pepper Well-Known Member

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    Neat & tidy.
    So you modded the input attenuator for different ranges, good idea.
     

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