On 18/02/2011 16:54, V G wrote:
> Hey all,
>
> I'm in desperate need of some sort of "oscilloscope" but don't really hav=
e
> the money to buy one at the moment. So I decided to make one.
>
> It's going to be a very simple, low speed oscilloscope.
>
> * For the ADC, I'm planning to use the LTC1418:
> http://www.linear.com/product/ltc1418 (5V, 14 bit, 200ksps, SPI, high
> impedance analog input, 0-4.096V input), which means around 100KHz bandwi=
dth
> tops, which is more than I need for now.
>
> * The input to the ADC will come from a high precision opamp, probably an
> LTC1050: http://www.linear.com/product/LTC1050
>
> Here's a basic overview of what I'm thinking (attached as well):
> http://img340.imageshack.us/img340/5610/oscilloscope.png
>
> What do you guys think?
I think you couldn't make one for price of decent 2nd hand unless a free=20
sound card driven scope with no calibrated attenuators and only about=20
+/- 1V ppk range is OK.


--=20
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