Pin Configuration Digital OutputĪrduino (ATmega) digital pins can be configured as output to drive output devices. Let’s see digital input, output of Arduino (ATmega). Crystal Oscillator – The Crystal oscillator has a frequency of 16MHz,It provides the basic timing and control to the board.RESET Button–It is used to reset the board button every time we flash the code to the board.Īrduino analog pins can also be used as digital input/output pins. Voltage Regulator-The voltage regulator converts the input voltage to 5V. To provide reference voltage for input voltage. Used to receive and transmit TTL serial data.ġ0 (SS), 11 (MOSI), 12 (MISO) and 13 (SCK) Used to provide analog input in the range of 0-5V Maximum current draw is 50mA.GND: ground pins. Vin: Input voltage to Arduino when using an external power source.5V: Regulated power supply used to power microcontroller and other components on the board.3.3V: 3.3V supply generated by on-board voltage regulator. The versatility of the pinout provides many different options such as driving motors, LEDs, reading sensors and more.
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