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Is there any USB device for simulating

  1. Jun 8, 2012 #1
    Is there any USB device for simulating......

    hi

    Is it posiible to generate analog signal from a USB device. The data to be generated as analog signal is stored in usb or PC to which it is connected ?

    thanks
     
  2. jcsd
  3. Jun 8, 2012 #2

    f95toli

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    Re: Is there any USB device for simulating......

    An USB-DAQ?

    See e.g.
    http://www.ni.com/data-acquisition/usb/

    Note that DAQs from NI are not what you would call cheap, there are plenty of less pricey alternatives out there.
     
  4. Jun 8, 2012 #3
  5. Jun 8, 2012 #4
  6. Jun 8, 2012 #5
    Re: Is there any USB device for simulating......

    are you trying to control something with the output signal, if so, then you'll need a micro-controller. For pure analog or digital data-acquisition, the other posters are on the right track, I've used this $20 piece before. dataq d-155.
     
  7. Jun 8, 2012 #6
  8. Jun 8, 2012 #7
  9. Jun 8, 2012 #8
    Re: Is there any USB device for simulating......

    As far as I know, most DACs are current limited to 20mA per output anyway. If you needed more current, you would push it to a transistor or relay controlling a larger current. Also, he needs to generate analogue signals and I don't see that mentioned on the Arduino.

    I really think a good mid-range DAQ is required, there seems to be a gap in the market.

    8 Channels - 4-in/4-out
    16/24 bit ADC
    2 Msps per channel
    USB

    Something like this for $100, or so, I think would sell really well.
     
  10. Jun 8, 2012 #9
    Re: Is there any USB device for simulating......

    yes for for analog, you are correct, I'm thinking of building a controller myself but i'll dig deeper into it later.
     
  11. Jun 9, 2012 #10
    Re: Is there any USB device for simulating......

    thanks all.
    actually the idea came because of this.
    So I thought I could pre-generate a fixed length data either in Scilab or Matlab, and
    produce the analog signal accordingly.
    I also saw ideas using PC/laptop sound card, but that needs conversion of data (csv, xls, txt etc) into mp3, wav format , which I feel is very tough.

    any more suggestions appreciated.
     
  12. Jun 9, 2012 #11
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