[sdiy] cute hand held scopes on eBay

[Richie Burnett]

>> The DSO nano is fairly well-known and was talked about on here a few weeks
>> ago. I have one; it's OK but a bit cheesy given it's single-channel.

I think the linear interpolation between sample points would be my biggest
gripe!  For example, this picture of a 500kHz sinewave:

http://toolboom.com/content_image/content/5210/IMG_2417.JPG

from the many photos at this page:

http://toolboom.com/en/Articles/DSO-Nano-DSO201-Pocket-Sized-Digital-Oscilloscope-Review.html

I know this is a dirt-cheap low-end product, and i'm spoiled having a Agilent
DSO on my desk here.  However, if someone would program proper sinc
interpolation into this it would at least be able to display the sampled
waveforms correctly up to its front-end's bandwidth limit.

-Richie,