The Arduino Nano is a small, compact microcontroller board based on the ATmega328P. It is designed for easy integration into projects and prototyping, offering a versatile platform for both beginners and experienced developers. The Nano features digital and analog input/output pins, USB connectivity for programming, and is fully compatible with the Arduino IDE. Its compact size makes it ideal for projects where space is limited, such as wearable devices, robotics, and IoT applications.
The Arduino Nano is equipped with the ATmega328P microcontroller and offers the following key specifications:
Specification | Details |
---|---|
Microcontroller | ATmega328P |
Operating Voltage | 5V |
Input Voltage (VIN) | 7-12V |
Digital I/O Pins | 14 (6 PWM outputs) |
Analog Input Pins | 8 |
DC Current per I/O Pin | 40 mA |
Flash Memory | 32 KB (2 KB used by bootloader) |
SRAM | 2 KB |
EEPROM | 1 KB |
Clock Speed | 16 MHz |
USB Connectivity | Mini-USB |
Dimensions | 18 x 45 mm |
The Arduino Nano has a total of 30 pins, including power, digital, and analog pins. Below is a detailed description of the pin configuration:
Pin | Name | Description |
---|---|---|
1 | VIN | Input voltage to the board when using an external power source (7-12V). |
2 | GND | Ground pin. |
3 | 5V | Regulated 5V output from the onboard voltage regulator. |
4 | 3.3V | Regulated 3.3V output (limited to 50 mA). |
5 | AREF | Reference voltage for analog inputs. |
6 | RESET | Resets the microcontroller when pulled LOW. |
Pin | Name | Description |
---|---|---|
D0-D13 | Digital I/O | General-purpose digital input/output pins. Pins D3, D5, D6, D9, D10, and D11 support PWM. |
Pin | Name | Description |
---|---|---|
A0-A7 | Analog In | Analog input pins for reading sensor data (0-5V). |
Pin | Name | Description |
---|---|---|
D0, D1 | RX, TX | Serial communication pins for UART (receive and transmit). |
D10-D13 | SPI | SPI communication pins (SS, MOSI, MISO, SCK). |
A4, A5 | I2C | I2C communication pins (SDA, SCL). |
Powering the Board:
Programming the Nano:
Connecting Components:
The following example demonstrates how to blink an LED connected to pin D13:
// This program blinks an LED connected to pin D13 on the Arduino Nano.
// The LED will turn on for 1 second and off for 1 second in a loop.
void setup() {
pinMode(13, OUTPUT); // Set pin D13 as an output pin
}
void loop() {
digitalWrite(13, HIGH); // Turn the LED on
delay(1000); // Wait for 1 second
digitalWrite(13, LOW); // Turn the LED off
delay(1000); // Wait for 1 second
}
Problem: The Arduino Nano is not recognized by the computer.
Problem: The code does not upload to the Nano.
Problem: The Nano resets unexpectedly during operation.
Problem: Analog readings are unstable or noisy.
Q: Can the Arduino Nano run on 3.3V?
Q: How do I reset the Nano manually?
Q: Can I use the Nano for battery-powered projects?
This concludes the documentation for the Arduino Nano. For more information, visit the official Arduino website.