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MSP-169STK audio recording

Discussions on how to get your MSP JTAG programmer up and running.

MSP-169STK audio recording

By jayjay
-  Thu Jul 07, 2005 12:05 am #6056
Hello

Has anyone done any audio recording experiments with the MSP-169STK? Got any tips/code to share?

Thanks
Jay

By jayjay
-  Tue Sep 06, 2005 5:53 pm #6845
I have hooked up a electret mic to the board's MIC input, from the schematic I see that it has an amp circuitry (MCP609) and phontom power for the microphone, somehow when I do an ADC sampling, the values hardly change at all. If I blow (not speak) hard enough, I do get a small response. Somehow I think the gain isnt enough for the mic signal.

I tested the mic with a PC sound card and it seems to work fine.

The schematic of the board is here:-

http://www.olimex.com/dev/images/msp430-169stk-sch.gif

Anyone care to comment?

Thanks
Jay
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