Hello Tal,

> Can anyone help me find circuit for pc-based oscilloscope? not need to be
> fast one, I think one can measure up to 100-500Khz it's more then enough.

    entirely PC-based (read soundcard) can't sample above the sample rate of
your soundcard (44.1/48kHz).

    A 16FXXX PIC can sample one channel at about 40KSPS (kilo samples per
second) IIRC but maybe the 18FXXX could do it faster.

    Hundreds of KSPS designs involve external DAC and memory but actually
isn't that difficult to do.

    Take a look at www.bitscope.com. I have one and I'm very happy with it.
A good software for it can be found at www.scopal.com.

    Take a look at PICLIST arquives. This was already discussed here.

    Best regards,

    Brusque

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Edson Brusque                 C.I.Tronics Lighting Designers Ltda
Research and Development               Blumenau  -  SC  -  Brazil
Say NO to HTML mail                          www.citronics.com.br
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