Description
Arduino Nano Original A000005
The Arduino Nano is a compact, open-source development board based on ATmega328P, an 8-bit AVR microcontroller.
It has 14 digital I/O pins, 8 analog input pins with 10-bit resolution, 2 reset pins, and 6 power pins, making it perfect for space-constrained projects that require fewer GPIOs and memory.
The Arduino Nano board operates at 5V, supports an input voltage of 6V–20V (recommended: 7V–12V), and runs at a 16 MHz clock frequency. Unlike most Arduino boards, it uses a mini USB port and lacks a DC power jack, so it cannot be powered through an external jack.
Fully breadboard-friendly, the Nano is perfect for quick prototyping. It offers flash memory of 32KB (with 2KB used by the bootloader), EEPROM of 512B/1KB, and SRAM of 1KB/2KB, depending on the microcontroller.
The Arduino Nano microcontroller delivers Arduino Uno-like performance in a smaller, more project-ready form.
What’s so special about Arduino Nano? Find out!
Arduino Nano Pin Diagram
| Pin | Description |
|---|---|
| Digital Pins (0–13) | 14 digital I/O pins for connecting external components. |
| Analog Pins (A0–A5) | 6 analog input pins to measure voltage from 0 to 5V. |
| LED (Pin 13) | Built-in LED connected to digital pin 13. |
| VIN | External input voltage pin (6–12V recommended). |
| 3.3V | Low voltage output from the on-board regulator. |
| 5V | Regulated 5V output to power components. |
| AREF | Analog reference voltage input for analog readings. |
| GND | 2 ground pins for grounding the circuit. |
| Reset | 2 reset pins to reset the controller via software. |
| External Interrupts | Pin 2 and 3 can trigger external interrupts in emergencies. |
| USART | Rx and Tx pins for serial data communication. |
| I2C | SDA and SCL pins for I2C communication using the Wire library. |
| SPI | SS, MISO, MOSI, SCK pins used for SPI communication with peripherals. |
Applications:
- Automation.
- Robotics.
- Control Systems.
- Embedded Computer.
Arduino Nano vs Uno Comparison Table
| Feature | Arduino Nano 
|
Arduino UNO R3
|
|---|---|---|
| Price (Robocraze) | ?1,798 | ?1,860 VIEW |
| Microcontroller | ATmega328P | ATmega328P |
| Operating Voltage | 5V | 5V |
| Input Voltage | 7-12V | 7-12V |
| Digital I/O Pins | 14 (6 PWM) | 14 (6 PWM) |
| Analog Input Pins | 8 | 6 |
| Clock Speed | 16 MHz | 16 MHz |
| Flash Memory | 32 KB (0.5 KB used by bootloader) | 32 KB (0.5 KB used by bootloader) |
| SRAM | 2 KB | 2 KB |
| EEPROM | 1 KB | 1 KB |
| USB Interface | Mini USB | Standard USB Type-B |
| Size | Compact (approx. 45mm x 18mm) | Larger (approx. 68.6mm x 53.4mm) |
| Best for | Compact projects, breadboard-friendly applications | Beginners, shields, projects needing standard size |
| Wireless Capability | Needs external module (e.g., ESP8266, HC-05) | Needs external module (e.g., ESP8266, HC-05) |
| Expandable with Shields | Limited due to size constraints | Yes, compatible with multiple shields |
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