![]() In addition, some pins have specialized features: Analog pins 6 and 7 cannot be used as digital pins. ![]() By default, they measure from ground to 5 volts, but is it possible to change the upper end of their range using the analogReference () function. The Nano has 8 analog inputs, each providing 10 bits of resolution (i.e. When the pin is HIGH, the LED is lit, when the pin is LOW, it is off. There is a built-in LED connected to digital pin 13. These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the language Arduino. Provide an 8-bit PWM output with the analogWrite () function. See the attachInterrupt () function for details. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a value change. These pins are connected to the corresponding pins of the FTDI USB-to-TTL serial chip. Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have specialized functions: Each pin can supply or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20 to 50. ![]() The power source is automatically selected to the highest voltage source.Įach of the Nano's 14 digital pins can be used as input or output using the pinMode (), digitalWrite () and digitalRead () functions. TheArduino Nano can be powered via the USB Mini-B connection, an external unregulated 6-20 V power supply (pin 30) or an external regulated 5 V power supply (pin 27). ![]() 32 KB flash memory including 2 KB used by the bootloader ![]()
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