Difference: I2SAndSound (4 vs. 5)

Revision 52022-09-24 - UliRaich

Line: 1 to 1

META TOPICPARENT	name="Exercises"

I2S and sound

Introduction

Line: 40 to 40

FMT	Gnd
XSMT short-circuit with A3V3		3.3 V output from regulator LDO

The SD card module, which may be used to store the music files, uses D5,D6,D7,D8 for its interface pins. These pins should therefore be avoided when choosing the pins for the PCM5102 module. D3 and D4 are used for PSRAM in case of the WROVER-B module.

Added:

>
>

I2S microphones

Two different I2S microphone breakout boards are available:

the INMP441 MEMS microphone
the SPH0645 MEMS microphone

Both microphones are supported by the MicroPython I2S driver.

INMP441 front view	INMP441 back view

SPH0645 front view	SPH0645 back view

I2S examples

Mike Teachman, the author of the I2S MicroPython driver has supplied a series of test programs for his driver. These examples need some slight modifications due to different connections of the I2S pins with respect to his hardware:

Line: 57 to 68

META FILEATTACHMENT	attachment="max98357a.png" attr="" comment="" date="1611505403" name="max98357a.png" path="max98357a.png" size="208396" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="pcm5102.png" attr="" comment="" date="1611505405" name="pcm5102.png" path="pcm5102.png" size="130048" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="pcm5102back.png" attr="" comment="" date="1611510513" name="pcm5102back.png" path="pcm5102back.png" size="90367" user="UliRaich" version="1"

Added:

>
>

META FILEATTACHMENT	attachment="inmp441_front.png" attr="" comment="" date="1664009577" name="inmp441_front.png" path="inmp441_front.png" size="146466" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="inmp441_back.png" attr="" comment="" date="1664009578" name="inmp441_back.png" path="inmp441_back.png" size="160263" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="sph0645_front.png" attr="" comment="" date="1664009578" name="sph0645_front.png" path="sph0645_front.png" size="112645" user="UliRaich" version="1"
META FILEATTACHMENT	attachment="sph0645_back.png" attr="" comment="" date="1664009579" name="sph0645_back.png" path="sph0645_back.png" size="123912" user="UliRaich" version="1"

View topic | History: r5 < r4 < r3 < r2 | More topic actions...