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Walkie-talkie code based on ESP32 NOW

ZLX-ESP32-1 · 2026-10-02 14:00:41

INMP441 pin ESP32 pin Code meaning VDD 3.3V power supply GND GND land SCK / BCLK GPIO18 I2S Bit Clock WS / LRCLK GPIO23 I2S Word Select SD / DOUT GPIO19 Microphone data input L/R G