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ESP32-S3-MINI-1-N4-R2, TDK ICS 43434 mic, MAX98357A speaker driver, plus speaker
ESP32
Home automation
Audio

What is it?

Audio development board.

  • ESP32-S3-MINI-1-N4-R2 (Dual core, 4M Flash, 2M SPIRAM)
  • TDK ICS 43434 high quality microphone (I2S) - right channel
  • MAX98357A speaker driver (I2S) - mix channels
  • Push button
  • 20 WS2812 LEDs
  • Plus optional speaker

Why did you make it?

Experimenting with audio I2S.

  • Can make an intercom / phone out of it
  • Can make an ESPhome remote speaker
  • Can make a remote audio command module

What makes it special?

Small board, designed to fit on speaker.

Links to code and documentation

Documentation (openmic.revk.uk)

Code (openmic.revk.uk)

Design Files (openmic.revk.uk)

Schematics (openmic.revk.uk)

Bom (openmic.revk.uk)

Product HS Code: 847330

Shipping policy

All parcels shipped with tracked shipping, usually shipped within one working day. If you find a large order has no shipping to EU, try placing smaller orders under €150. And we're sorry for US customers as it seems tariffs are now 50%.

ESP32 Audio development board + speaker

Sold by RevK® at Andrews & Arnold Ltd

$33.91

No tax for United States [change]
Works with this 5W speaker
Stock available: 5
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Original Design
This product was designed by RevK® at Andrews & Arnold Ltd. By buying this product you support original hardware creators.
Fast Shipper (<48h)
This store ships orders in less than 48 hours, in more than 80% of cases (excluding weekends).
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The seller

RevK® at Andrews & Arnold Ltd

RevK® at Andrews & Arnold Ltd logo

BRACKNELL, Berks, UK
551 orders since Apr 3, 2025
Andrews & Arnold Ltd are a UK based communications company. We sell internet, telephone, SMS, and make some serious routers (FireBrick).
We use a lot of open source, and give back with a lot of open source code and hardware designs on Codeberg.
We have many open source PCB designs. These are not sold as consumer products, but assembled PCBs, development boards for hobbyist use.
Suggestions and git merge requests on Codeberg always welcome.
We recommend EU customers order under €150 in one go.