Tuesday Update
We got the Butterfly's USART working. We are now able to send serial data to and from the Butterfly at 115k baud (the highest rate the XBees will be able to use) with 0% error. This allows us to easily test the ADC by having it spit readings to HyperTerminal. It appears the ADC is fully functional.
We also worked on the pre-amplifier for the ADC. The voltage levels we get out of line level MP3 players and audio jacks seems to range between 0-0.3V. The ADC can read values between 0-3V. So in order to utilize the ADC's full precision, we will need to amplify the input by a gain of about 10, we think.
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