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Data logger design

Discussion in 'Electronic Design' started by Philip Frampton, Jun 16, 2005.

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  1. Hello,

    I'm looking for a data logger with and ADC capable of >300khz. The aim
    is to record from an ultrasonic microphone (bat detecting) to a palmtop
    or laptop.

    The requirements are :

    USB
    12-bit preferably
    battery or PC powered (over USB)

    There are several solutions in the form of commercial scopes and
    software, but a homebuild schematic would be great as most of the fancy
    features of a fast scope aren't needed and cheap ADC don't sample
    frequently enough.

    If someone could point me in the right direction. I'm sure I saw a 8mhz
    ADC in one of the electronic magazines a while ago but I can't find it
    now. If someone has some hints I can call up a magazine from the library
    archive.

    Many thanks,
    Philip
     
  2. Rob

    Rob Guest

    Philip, I'm not sure if you want to record the bat's actual "chirp" - it
    sounds like you may want to, but there are a number of bat detector circuits
    around. I can't remember where I saw them, it may have been on Dave
    Johnstons Imagineering site. Googling should point you to something. These
    were for detecting bat "events" rather than details of the bats actual
    sounds. You may be way past this so this may not help you at all. Have fun.
    rob
     
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