This digital representation of analog signals allows the processor (which is a digital device) to measure the analog signal and use it through its operation. ADC is an electronic circuit used to convert analog signals into digital signals.

Analog to Digital ConversionĪDC stands for Analog to Digital Converter.

The ESP32-CAM has 7 x 12 bits ADC input channels. These are the GPIOs that can be used as ADC and respective channels. You can find 1 reset button on theback of the ESP32-CAM. Always make sure that all GNDs (of the Arduino, peripherals and components) are connected to one another and have a common ground. The GND pins are used to close the electrical circuit and provide a common logic reference level throughout your circuit. If you want to have an output of 5V on the VCC pin, you need to unsolder that connection and solder the 5V pads. If you look closely, you should have a jumper on the 3.3V pads. In our case, the ESP32-CAM outputs 3.3V whether it is powered with 5V or 3.3V. You should not use that pin to power the ESP32-CAM. There’s also the pin labeled on the silkscreen as VCC.

However, many people reported errors when powering the ESP32-CAM with 3.3V, so we always advise to power the ESP32-CAM through the 5V pin. Note: You can power the ESP32-CAM through the 3.3V or 5V pins. The ESP32-CAM comes with three GND pins (colored in black color) and two power pins (colored with red color): 3.3V and 5V. In this post, we’ll go over the capabilities of the ESP32 CAM pinout. The versatility of the pinout provides many different options such as driving motors, LED’s, reading sensors and more. The ESP32-CAM pinout consists of 16 pins. ESP32-CAM is based on the Single-core Xtensa LX7 CPU, up to 240 MHz. In this post, we’ll be taking a closer look at the ESP32-CAM hardware, and more specifically, the ESP32-CAM pinout.

Download free esp32 cam pinout