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Interactive pinout

Arduino Nano pinout

The classic Nano with the USB port at the top. D13 sits at the top-left, VIN at the bottom-left; the right column runs from D12 down to TX.

  • GPIO
  • Power
  • Ground / N.C.
  • Reset
  • Has a warning

Selected pin

D13GPIO13

Use with care

GPIOSPI

SPI clock and the on-board LED.

spi
SCK

Heads up: Shared with the on-board LED.

Code for this pin

const int PIN = 13;

void setup() {
  pinMode(PIN, OUTPUT);
}

void loop() {
  digitalWrite(PIN, HIGH);
  delay(500);
  digitalWrite(PIN, LOW);
  delay(500);
}
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Good to know

  • ›Pins A6 and A7 are analog-input only on the Nano (they have no digital function).
  • ›Cheap Nano clones use a CH340 USB chip and may need a driver on Windows or macOS.
Full Arduino Nano specs ESP32 pins to avoid

Where to buy

Adafruit SparkFun Amazon AliExpress

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