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ESP32 FAQ: Questions, Answered.

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FAQ › Bluetooth & Data › ESP32 UART: Serial, TX2, AT Commands

// uart · faq ESP32 UART: Serial, TX2, AT Commands Filed under: ESP32 · UART · Updated August 2026 ESP32 UART questions come in three flavors: which pins, which API, and why nothing comes back. Three hardware serials, one 115200 default, one loopback test that settles arguments. How to Use Hard

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