The Arduino Nano is a compact microcontroller development board based on the Arduino platform. It provides a set of digital I/O pins, several PWM-capable pins, and analog inputs, and it typically connects to sensors and modules via its GPIO headers and I2C (SDA/SCL) lines. Programming is commonly done through USB (serial) or via ICSP.
| Pin | Signal | Description |
|---|---|---|
D12 |
digital | Top edge digital pin 12 through-hole pad |
D11 |
PWM | Top edge digital pin 11 through-hole pad |
D10 |
PWM | Top edge digital pin 10 through-hole pad |
D9 |
PWM | Top edge digital pin 9 through-hole pad |
D8 |
digital | Top edge digital pin 8 through-hole pad |
D7 |
digital | Top edge digital pin 7 through-hole pad |
D6 |
PWM | Top edge digital pin 6 through-hole pad |
D5 |
PWM | Top edge digital pin 5 through-hole pad |
D4 |
digital | Top edge digital pin 4 through-hole pad |
D3 |
PWM | Top edge digital pin 3 through-hole pad |
D2 |
digital | Top edge digital pin 2 through-hole pad |
GND |
ground | Top edge ground pin through-hole pad |
RST |
Top edge reset pin through-hole pad | |
RX0 |
RX | Top edge UART receive pin through-hole pad |
TX1 |
TX | Top edge UART transmit pin through-hole pad |
D13 |
digital | Bottom edge digital pin 13 through-hole pad |
3V3 |
power | Bottom edge 3.3V power pin through-hole pad |
AREF |
analog | Bottom edge analog reference pin through-hole pad |
A0 |
analog | Bottom edge analog input pin 0 through-hole pad |
A1 |
analog | Bottom edge analog input pin 1 through-hole pad |
A2 |
analog | Bottom edge analog input pin 2 through-hole pad |
A3 |
analog | Bottom edge analog input pin 3 through-hole pad |
A4 |
SDA | Bottom edge analog input pin 4 / SDA pad |
A5 |
SCL | Bottom edge analog input pin 5 / SCL pad |
A6 |
analog | Bottom edge analog input pin 6 through-hole pad |
A7 |
analog | Bottom edge analog input pin 7 through-hole pad |
+5V |
power | Bottom edge 5V power pin through-hole pad |
RST |
Top edge reset pin through-hole pad | |
GND |
ground | Top edge ground pin through-hole pad |
VIN |
power | Bottom edge VIN power input pin through-hole pad |
USB |
data | USB connector metal shell / interface |
ICSP1 |
Right-side 2x3 ICSP programming header |
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