![]() ![]() Note: one of our readers shared that if you initialize the microSD card as follows, you won’t have this problem because the microSD card won’t use that data line.* SD_MMC.begin("/sdcard", true) That GPIO is also connected to the microSD card slot, so you may have troubles when trying to use both at the same time – the flashlight will light up when using the microSD card. That LED is internally connected to GPIO 4. The ESP32-CAM has a very bright built-in LED that can work as a flash when taking You can take a look at the ESP32 pinout guide to see the features of these pins.Īll these GPIOs are RTC and support ADC: GPIOs 2, 4, 12, 13, 14, and 15. ![]() If you’re not using the microSD card, you can use these pins as regular inputs/outputs. The following pins are used to interface with the microSD card when it is on operation. To make the ESP32 run “normally”, you just need to disconnect GPIO 0 from GND.
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