Seeed studio is designing what looks to be an ultra-portable digital storage oscilloscope, using the shell of a portable music player. Detailed specifications are questionably absent, however it looks like it has great potential. Has anyone hacked together something like this using a scavenged cell phone yet?
Posted by Matt Mets |
Sep 10, 2009 01:30 PM
Electronics |
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I have the $49 Seeed Studio scope http://www.seeedstudio.com/depot/digital-storage-oscilloscope-with-panels-p-167.html
I am really impressed with it. I don't need a full featured scope and this one was really handy when working on some small projects.
Can't wait to see this one.
-Joe
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One constructed by a friend a few years ago:
http://www.svenkreiss.com/OpenOsci
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The app found at the following URL might be of interest:
http://www.mobilerated.com/scope-4396.html
It doesn't work on my Motorola SLVR, but any Java-enabled mobile with less restrictive hardware access ought to run it fine. I hadn't thought of it before, but it would be a cool idea to get a cheap phone to run this on, replace the mic with test leads, and make yourself a *very* portable little 'scope for *very* little moolah!
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It would be really nice, however the microphone jack probably isn't a great choice for an oscilloscope input, because it has an AC coupled input. That means that any DC portion of a signal (such as a bias voltage) will be ignored, and, depending on the sound card hardware, could actually damage the phone. It will work great for measuring AC signals in the ~50-22000Hz range, though :-).
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I have been playing with this scope now for a couple of days.
I have written my early impressions in a review here..
http://www.justblair.co.uk/seeed-studio-dso-nano-pocket-digital-storage-oscilloscope-review.html
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