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NEW Low Cost USB DAQ from NI - Starting at $145 Acquire and log data in minutes with new USB DAQ devices from National Instruments. With ready-to-run data logging software and driver software for LabVIEW included, taking measurements is simple. The hardware has all the functionality you...

So, I see these wireless mics at Target for $15 and figure I could make it work with my soundcard. No go. I hacked the cable to isolate the bias voltage from the soundcard by not connecting the middle section of a stereo connector. Is there some signal conversion that I need to do? I thought I...