Output of GY-MAX4466 microphone breakout module connected directly to the analog input (ADC) of the ESP32 recording a 15 seconds WAV audio (8,000 Hz 8 bit PCM, 64 kbit/s), trimming silence at the end and uploading it to # Slack via Wi-Fi using Slack API. Here is a demo video https://www.youtube.com/watch?v=DffZVyksYi4