https://github.com/gtalusan/admp441-rpi

ADMP441 for the Raspberry Pi
https://github.com/gtalusan/admp441-rpi

admp441 i2s invs441 kernel linux linux-kernel mems microphone oshpark raspberry-pi raspberrypi

Last synced: 2 months ago
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ADMP441 for the Raspberry Pi

• Host: GitHub
• URL: https://github.com/gtalusan/admp441-rpi
• Owner: gtalusan
• Created: 2017-03-28T01:32:14.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2022-08-11T13:44:17.000Z (almost 3 years ago)
• Last Synced: 2025-04-16T04:45:06.593Z (2 months ago)
• Topics: admp441, i2s, invs441, kernel, linux, linux-kernel, mems, microphone, oshpark, raspberry-pi, raspberrypi
• Language: C
• Size: 2.93 KB
• Stars: 10
• Watchers: 2
• Forks: 7
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# ADMP441 MEMS I2S driver for Raspberry Pi.

## Breakout Board

Purchased from [OSHPark](https://oshpark.com/shared_projects/ypqAU3CH) via https://github.com/SamEA/ADMP441_Microphone.git

### BOM

![OSHPark](https://raw.githubusercontent.com/SamEA/ADMP441_Microphone/master/ADMP441%20Breakout%20Board%20Top.png)

1. R1 - 100kOhm

2. C1 - 100nF

3. U1 - ADMP441 MEMS desoldered from Amazon Dash

## Raspberry Pi

|ADMP441|RPi|

|-------|---|

|WS     |19 |

|SD     |20 |

|SCK    |18 |

|VCC    |1  |

|GND    |9  |

### Kernel

Run `make && make install` in the `linux` directory

### Device Tree Overlay

```

cd dts

dtc -@ -I dts -O dtb -o i2s-soundcard.dtbo i2s-soundcard-overlay.dts

sudo cp i2s-soundcard.dtbo /boot/overlays

```

### Configuration

Add `admp441` to `/etc/modules`

Add `dtoverlay=i2s-soundcard,alsaname=mems-mic` to `/boot/config.txt`

### Reboot!