Sound Sensor Tutorial for Arduino, ESP8266 and ESP32
Amazon.com: Type-C ESP8266 ESP-12 ESP-12F NodeMcu Mini D1 Module WeMos Lua 4M Bytes WLAN WiFi Internet Development Board Base on ESP8266 ESP-12F for Arduino,Compatible with WeMos D1 Mini (10pcs Type-C) : Electronics
Wireless classroom conference microphone system – #3 | Robert Oostenveld's blog
Wireless classroom conference microphone system – #3 | Robert Oostenveld's blog
NodeMcu Speak With ISD1820 Module : 3 Steps - Instructables
Need help to connect a microphone module to ESP8266 - Questions - WLED