GPIO 2 and GPIO 3 are external interrupts. Some pins however has specified functions: These pins operate with 5V voltage, maximum 40mA current and contains 20-50kOhm internal resistors. PinMode(), digitalWrite(), digitalRead() and analogWrite () function, the last one works with the pins that marked ~PWM symbol. IOREF pin provide reverence voltage for microcontroller.ĭigital pins of the board can be used as inputs or outputs, and use three functions: Vin pin is used for brd external voltage supply. At the same time time maximum current is 50mA. 3.3V pin supply 3.3 V voltage from on board regulator. In total board contains 14 digital input/output pins and 6 analog pins, USB and power jack.ĥV pin supply 5V voltage from the on board regulator. In the output mode GPIO beacon receives data from connected device, in the output mode – GPIO beacon transmit data to connected device. This pinout shows analog and digital GPIO pins. Let’s take a look on the pinout of board on the picture below: All he need to do is plug in the board into power source via USB cable, AC-to-DC adapter or battery. It is better to install all libraries you find reasonable, however there is a few of them already pre-installed and ready to use.Īfter software Arduino IDE application developer can start using it right away. The application will offer you an option to download libraries. Go to the official web page, download the software for OS you use.
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