MSP-169STK audio recording

Development Boards MicroMod
1

Hello

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

Thanks

Jay

2

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