2025

work in progress
current: v1.1
custom pcb
programmable using arduino, esp-idf, faust

usb audio class capable
wifi
bt

FEATURES

esp32 (ESP32-S3-WROOM-1)
amp (MAX98357A)
microphone (ICS-43434)
user button (GPIO_NUM_45)
red led (GPIO_NUM_21)
gpios (GPIO_NUM_9, GPIO_NUM_10, GPIO_NUM_11, GPIO_NUM_12)
usb c for programming and power
alternative power using 5v 2.1mm jack (center-positive)

AMP

i2s
gain configurable using bridges
DIN—GPIO_NUM_5
BLCK—GPIO_NUM_6
LRCLK—GPIO_NUM_7

MIC

mems, i2s
WS—GPIO_NUM_2
SCK—GPIO_NUM_3
SD—GPIO_NUM_4

EXAMPLE

hi.ino