Fix ESP32-SIM800L AT Response

Budget: - / ⭐ (0)

Arduino, Circuit Design, Debugging, Electronics, Embedded Systems, Microcontroller Programming (STM32 / ESP32), Prototyping

My ESP32 Dev Module refuses to return anything when I send AT commands to a SIM800L red board. The wiring follows the usual guides: GPIO27 to the SIM’s RX, GPIO26 to its TX, grounds tied together, the SIM powered directly from a single 18650 cell... (Budget: ₹600 - ₹601 INR, Jobs: Arduino, Circuit Design, Debugging, Electronics, Embedded Systems, Microcontroller Programming (STM32 / ESP32), Prototyping)

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