ESP32 - 30Pin Development Board (WIFI and Bluetooth)

Description

ESP32 Pinout Diagram(30-pin Devkit)The ESP32 development boards come with so many versions, pinouts, shapes, etc. In this article, we are going to see the pinout diagram of ESP32 30-pin Devkit development board. It has a 48 pin QFN (Quad Flat No Leads) package microcontroller IC. As this is a No leads IC, so it is very difficult to solder manually on a board. So the developer made a module using this microcontroller is called ESP-WROOM-32. So the ESP 32 development board consists of ESP-WROOM-32 as the baseboard. This ESP-WROOM-32 IC contains 4 MB SPI Flash memory IC and a 40MHz Crystal Oscillator, PCB Antenna, etc. As the ESP32 board consists of a 4 MB flash memory to store its primary program, some GPIO pins are directly connected to this flash memory. So these pins are can be used only for the programming of the board, these pins are cannot be used for other functions. ESP32 Pinout Diagram(30-pin Devkit)Here, you can see the pinout diagram of ESP32 Devkit Development Board.You can see each of the pins of this board has multiple functions. Each function is clearly noted with different colors. Now we will discuss about these functions with respective pins to understand how to and which pins should be used. GPIO means General Input and Output. In the 30 pin ESP32 board, 25 GPIO pins are available to connect with external circuits. It also has some other GPIO pins that are connected internally with some ports and ICs. The GPIO pins are also used for other functions such as ADC