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usbmic's Introduction

UsbMic

USB microphone with ADMP401 MEMS

Wiring schema

Wiring schema

Hardware used

  • ADMP401
  • AMS1117 (HX1117 AH 3.3HS1430)
  • USB Soundcard (1b3f:2008 Generalplus Technology Inc.)

Cheap USB soundcard

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Bottom

Mic_Parts

Jack Ground research

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usbmic's Issues

Level shifting?

Cool project! I just so happened to have those exact parts lying around and put it together.

On initial testing, I am not really sure what I am getting out of the microphone, a lot of constant noise.

I am not really an expert in electronics, but the datasheet for the ADMP401 seems to indicate that the output will hover around 1.65V. I couldn't really work out if this would be fine for the USB sound card or not. Did you have to add any other components to get this project to work?

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