Your RTC module is also compatible with Arduino, right?

Your custom project should include all the necessary paths, libraries, and compiler options. Please compare the CMakeLists.txt or Makefile between the example project and your custom project.

You can safely use GPIOs 4, 5, 16, 17, 25, 26, and 27 for PWM without disrupting the boot/flash process. Avoid bootstrapping and flash-related pins, and your motor control application should work smoothly. Certain GPIO pins are used for bootstrapping, and using them incorrectly can cause boot issues...

To make a wireless switch with ESP32, you need to configure the Wifi or Bluetooth. To control an AC load with the ESP32 wirelessly, you must use a relay.

Thanks. It's gonna help us a lot.

Wake stubs are executed very early during the wake-up process, and their execution time is limited. The "watchdog timer" reset (TG0WDT_SYS_RST) is likely triggered because your code in the wake_stub function takes too long. You can edit your code like this: #include <stdio.h> #include "esp_sleep.h" ...

Please check if the FTDI/CP210x driver is properly installed.

Add extra or larger low-ESR ceramic capacitors close to the ESP32-C3’s VCC pin to smooth out voltage dips. Typically, 10 µF, 1 µF, and 0.1 µF capacitors in parallel are used. These capacitors should be very close to the chip.

Use larger buffers for data transfer to reduce the number of interruptions and context switches.

It will be much easier if you use CP2102, FT232RL, or CH340. Usually ESP32 boards have CP2102 chips.
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