![]() ![]() Vin (9) − This pin also can be used to power the Arduino board from an external power source, like AC mains power supply. GND (8)(Ground) − There are several GND pins on the Arduino, any of which can be used to ground your circuit. Most of the components used with Arduino board works fine with 3.3 volt and 5 volt. Second, you can connect an external reset button to the Arduino pin labelled RESET (5). First, by using the reset button (17) on the board. You can reset your Arduino board, i.e., start your program from the beginning. It tells us that the frequency is 16,000,000 Hertz or 16 MHz. The number printed on top of the Arduino crystal is 16.000H9H. How does Arduino calculate time? The answer is, by using the crystal oscillator. The crystal oscillator helps Arduino in dealing with time issues. The function of the voltage regulator is to control the voltage given to the Arduino board and stabilize the DC voltages used by the processor and other elements. All you need to do is connect the USB cable to the USB connection (1).Īrduino boards can be powered directly from the AC mains power supply by connecting it to the Barrel Jack (2). Some boards look a bit different from the one given below, but most Arduinos have majority of these components in common.Īrduino board can be powered by using the USB cable from your computer. In addition, it is the best board to get started with electronics and coding. We will study the Arduino UNO board because it is the most popular board in the Arduino board family. In this chapter, we will learn about the different components on the Arduino board.
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