• ESP32-DevKitC : espressif
• AE-ADMP441_K : Akizuki Denshi (or similar product using ADMP441)
• AE-MICRO-SD-DIP : Akizuki Denshi (or similar product for micro SD slot)
• resistor 10kΩ x 4, 100kΩ x 1, capacitor 22pF x 1

The SD card wiring is the same as above (for my sd card adapter, pullup resistors weren't necessary)

MAX9814 Wiring: MAX9814 | ESP32 GND - GND
Vdd - 3V3
Out - VP (GPIO36)
AR - dont connect
Gain - if it's not connected is 60dB Gain, if its connected to Gnd it's 50dB, and if it's connected to Vdd it's 40dB

Note: if you want to change the Esp32 VP pin to another, use this image and change ADC1_CHANNEL_0 in I2S.cpp file accordingly.

i used information from this example

• Arduino IDE
• arduino-esp32

Set SD card. Turn on the power. And it starts recording sound and saves as wav file (16bit, monoral, 44.1kHz) in SD card.