Speech recognition verification board based on ESP32-S3

The ESP32-S3-based speech recognition verification board
has only been tested with the ESP-IDF 5.0 version.
The board design references the ESP32-S3-EYE.
No anti-static design is added at the USB port.

If the computer repeatedly disconnects and reconnects the device upon first insertion of the USB, shorting IO0 and powering on will resolve the issue.

Hardware components include:
a power supply
using the SY8120B1ABC chip for the DC-DC converter; a USB 5V to 3V3
converter; and an I2S
microphone using the MSM261S4030H0R

. The MSM261S4030H0R is an omnidirectional, top-ported, I2S digital output MEMS microphone with high performance and reliability.

The board
has one onboard RGB indicator using the WS2812
and three reserved LEDs. Low-level active,
default IO.



IO
component
notes:




14
LED
wake-up word indicator;


21
LED
none;


47
LED
none;


13
WS2812
RGB;


2
MSM261S4030H0R
SD;


41
MSM261S4030H0R
SCK;


42
MSM261S4030H0R
WS



software dependency ESP-WHO
Github address ESP32-S3-Audio-Test