This GPIO is internally connected to a pull-up 10k Ohm resistor. GPIO 0 determines whether the ESP32 is in flashing mode or not. However, you won’t be able to open the Serial Monitor and see if everything is going well with your setup. You can use GPIO 1 and GPIO 3 to connect other peripherals like outputs or sensors after uploading the code. Because the ESP32-CAM doesn’t have a built-in programmer, you need to use these pins to communicate with the board and upload code. GPIO 1 and GPIO 3 are the serial pins (TX and RX, respectively). One is labelled 3.3V and the other is labelled 5V. Two pads are located next to the VCC pin. Whether supplied with 5V or 3.3V, the ESP32-CAM outputs 3.3V in our situation. That pin should not be used to power the ESP32-CAM. There’s also the VCC pin, which is labelled on the silkscreen (colored with a yellow rectangle). However, many individuals have noticed issues while using 3.3V to power the ESP32-CAM, thus we always recommend using the 5V pin.

The ESP32-CAM can be powered from the 3.3V or 5V pins. The ESP32-CAM has three GND pins (coloured black) and two power pins (coloured red): 3.3V and 5V, respectively. The following image shows the pinout diagram for the ESP32-CAM AI-Thinker. ApplicationsĮSP32-CAM AI-Thinker module has a never-ending list of applications like home automation, intelligent devices, positioning systems, and security systems and is perfect for IoT applications. Two high-performance 32-bit LX6 CPUs with a 7-stage pipeline architecture are included in the ultra-small, low-power module. Espressif’s ESP32-CAM AI-Thinker is an enhanced version of the ESP8266-01 with numerous functionalities. One of the most common clever modules for IoTs is the ESP32 Series processor. Everyone is interested in Smart technology, from enthusiasts to innovators, in building various prototypes and goods, and launching them on the market. For quite some time, the world has revolved around IoTs, or Internet of Things.

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