LimeSDR Mini – An open, full-duplex, USB stick radio for femtocells and more

Re:LimeSDR Mini – An open, full-duplex, USB stick radio for ... by tinco on Saturday September 23, 2017 @10:11AM (#15319803)

This thing has awesome specs! Would it require much to turn it into an oscilloscope?

I guess it would require some frontend to get the voltages in the right scale and perhaps fancy overvoltage protection. Obviously you can do a lot better than 3.5ghz these days, but for audio and simple electronics it seems to be plenty.

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Re:LimeSDR Mini – An open, full-duplex, USB stick radio for ... by dahtguy on Saturday September 23, 2017 @02:08PM (#15320914)

Yeah, it would require quite a bit. Note that while it can input a massive frequency band (10M to 3.5G), the sampling rate is quite small (~31MS/s). Would work much better as a spectrum analyzer than a time domain viewer.

You can definitely use it as an oscilloscope, but it's non-trivial and has many limitations. Recommend getting a cheapo analog one, or if you're already at the normal SDR price range, just going for a Rigol

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Re:LimeSDR Mini – An open, full-duplex, USB stick radio for ... by KGIII on Saturday September 23, 2017 @11:57AM (#15320277)

Just use your laptop's mic jack to make an oscilloscope.

http://www.instructables.com/id/Use-Your-Laptop-as-Oscillosc...

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Re:LimeSDR Mini – An open, full-duplex, USB stick radio for ... by tinco on Saturday September 23, 2017 @01:29PM (#15320732)

Well I'd hope for a slightly better range than 20Khz and maybe resolution. Also I'd imagine the noise level wouldn't be very satisfactory.

With a 3.5ghz oscilloscope you could work on Mhz order chips, power supplies and who knows what other fun stuff.

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Re:LimeSDR Mini – An open, full-duplex, USB stick radio for ... by KGIII on Saturday September 23, 2017 @02:18PM (#15320944)

I figured you were just looking for something to toy with. I figure that turning this device into a scope is not going to result in an accurate scope nor something that would be useful beyond entertainment value.

It seemed like a good idea to recommend something cheaper, easier, and better documented. Besides, who doesn't want to use their mic jack as an oscilloscope? ;-)

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