The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.
EAGLE's thousands of library files can be overwhelming. We have more than 500 curated, proven design files for your use. 1) Grab them in GitHub, 2) drag-and-drop a ULP file into an open EAGLE schematic, or 3) find single product design files on product pages or in GitHub (note for product files: individual board files are in 'Hardware. This not foe Arduino Nano but for Duemilanove. Please carify what your one sentence means if you still require. Your post asked for a Nano library. My assist pointed you to a Nano library. Are you now saying that you meant to ask for Duemilanove? I see the problem. It is not obvious that the URL to the nano library is a. For the moment we can mainly focus our attention about the correct type of the connectors so we add, as explained before, two made by 6 contacts for the power supply section and the analog connections and other two made by 8 pins for digitals; the chosen connectors are the ones in the “con-molex” library, identified by “” e “”. Just like a real Arduino only smaller. See also www.arduino.cc Hopefully the artwork is also included in the ZIP file. Components are as accurate as I could get from datasheets and from measuring a real Nano, although their placement was rather defined.
Related Boards
If you are looking at upgrading from previous Arduino designs, or if you are just interested in boards with similar functionality, at Arduino you can find:
- NANO 33 BLE
- 33 BLE SENSE
- 33 IoT
- Arduino Micro
Getting Started
Find inspiration for your projects with the Nano board from our tutorial platform Project Hub.
You can find in the Getting Started with Arduino Nano section all the information you need to configure your board, use the Arduino Software (IDE), and start tinkering with coding and electronics.
From the Tutorials section you can find examples from libraries and built-in sketches as well other useful information to expand your knowledge of the Arduino hardware and software.
Need Help?
Check the Arduino Forum for questions about the Arduino Language, or how to make your own Projects with Arduino. Need any help with your board please get in touch with the official Arduino User Support as explained in our Contact Us page.
Warranty
You can find here your board warranty information.
| Microcontroller | ATmega328 |
| Architecture | AVR |
| Operating Voltage | 5 V |
| Flash Memory | 32 KB of which 2 KB used by bootloader |
| SRAM | 2 KB |
| Clock Speed | 16 MHz |
| Analog IN Pins | 8 |
| EEPROM | 1 KB |
| DC Current per I/O Pins | 40 mA (I/O Pins) |
| Input Voltage | 7-12 V |
| Digital I/O Pins | 22 (6 of which are PWM) |
| PWM Output | 6 |
| Power Consumption | 19 mA |
| PCB Size | 18 x 45 mm |
| Weight | 7 g |
| Product Code | A000005 |
OSH: Schematics
The Arduino Nano is open-source hardware! You can build your own board using the following files:
EAGLE FILES IN .ZIPSCHEMATICS IN .PDFBOARD SIZE IN .PDFPinout Diagram
Download the full pinout diagram as PDF here.
Power
The Arduino Nano can be powered via the Mini-B USB connection, 6-20V unregulated external power supply (pin 30), or 5V regulated external power supply (pin 27). The power source is automatically selected to the highest voltage source.
Memory
The ATmega328 has 32 KB, (also with 2 KB used for the bootloader. The ATmega328 has 2 KB of SRAM and 1 KB of EEPROM.
Input and Output
Each of the 14 digital pins on the Nano can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:
- Serial: 0 (RX) and 1 (TX). Used to receive (RX) and transmit (TX) TTL serial data. These pins are connected to the corresponding pins of the FTDI USB-to-TTL Serial chip.
- External Interrupts: 2 and 3. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details.
- PWM: 3, 5, 6, 9, 10, and 11. Provide 8-bit PWM output with the analogWrite() function.
- SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the Arduino language.
- LED: 13. There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off.
The Nano has 8 analog inputs, each of which provide 10 bits of resolution (i.e. 1024 different values). By default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the analogReference() function. Analog pins 6 and 7 cannot be used as digital pins. Additionally, some pins have specialized functionality:
- I2C: A4 (SDA) and A5 (SCL). Support I2C (TWI) communication using the Wire library (documentation on the Wiring website).
There are a couple of other pins on the board:
- AREF. Reference voltage for the analog inputs. Used with analogReference().
- Reset. Bring this line LOW to reset the microcontroller. Typically used to add a reset button to shields which block the one on the board.
Communication
The Arduino Nano has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega328 provide UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). An FTDI FT232RL on the board channels this serial communication over USB and the FTDI drivers (included with the Arduino software) provide a virtual com port to software on the computer. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the board will flash when data is being transmitted via the FTDI chip and USB connection to the computer (but not for serial communication on pins 0 and 1). A SoftwareSerial library allows for serial communication on any of the Nano's digital pins. The ATmega328 also support I2C (TWI) and SPI communication. The Arduino software includes a Wire library to simplify use of the I2C bus. To use the SPI communication, please see ATmega328 datasheet.
Programming
The Arduino Nano can be programmed with the Arduino software (download). Select 'Arduino Duemilanove or Nano w/ ATmega328' from the Tools > Board menu (according to the microcontroller on your board). The ATmega328 on the Arduino Nano comes preburned with a bootloader that allows you to upload new code to it without the use of an external hardware programmer. It communicates using the original STK500 protocol. You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header using Arduino ISP or similar.
Automatic (Software) Reset
Rather then requiring a physical press of the reset button before an upload, the Arduino Nano is designed in a way that allows it to be reset by software running on a connected computer. One of the hardware flow control lines (DTR) of the FT232RL is connected to the reset line of the ATmega328 via a 100 nanofarad capacitor. When this line is asserted (taken low), the reset line drops long enough to reset the chip. The Arduino software uses this capability to allow you to upload code by simply pressing the upload button in the Arduino environment. This means that the bootloader can have a shorter timeout, as the lowering of DTR can be well-coordinated with the start of the upload. This setup has other implications. When the Nano is connected to either a computer running Mac OS X or Linux, it resets each time a connection is made to it from software (via USB). For the following half-second or so, the bootloader is running on the Nano. While it is programmed to ignore malformed data (i.e. anything besides an upload of new code), it will intercept the first few bytes of data sent to the board after a connection is opened. If a sketch running on the board receives one-time configuration or other data when it first starts, make sure that the software with which it communicates waits a second after opening the connection and before sending this data.
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| Device / variant | Symbol | Package | Action | |
|---|---|---|---|---|
device:ARDUINO_NANO library:ArduinoNano/ArduinoNanoV30.lbr | Arduino Nano V3.0Overview:The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.x) or ATmega168 (Arduino Nano 2.x). It has more or less the same functionality of the Arduino Duemilanove, but in a different package.It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one.The Nano was designed and is being produced by Gravitech.Specifications: Microcontroller Atmel ATmega168 or ATmega328 ... | Download NowShow Library | ||
variants: | symbol:ARDUINO_NANO | package:ARDUINO_NANO | Show Device | |
device:ARDUINO2009_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009 | package:ARDUINO2009 | Show Device | |
device:ARDUINO2009_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009 | package:ARDUINO2009_1 | Show Device | |
device:ARDUINO2009_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009 | package:ARDUINO2009_2 | Show Device | |
device:ARDUINO2009_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUNIO2009_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009 | Show Device | |
device:ARDUINO2009_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUNIO2009_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009_1 | Show Device | |
device:ARDUINO2009_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUNIO2009_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009_2 | Show Device | |
device:ARDUINO2009_PIN_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN | package:ARDUINO2009 | Show Device | |
device:ARDUINO2009_PIN_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN | package:ARDUINO2009_1 | Show Device | |
device:ARDUINO2009_PIN_1 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN | package:ARDUINO2009_2 | Show Device | |
device:ARDUINO2009_PIN_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009 | Show Device | |
device:ARDUINO2009_PIN_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009_1 | Show Device | |
device:ARDUINO2009_PIN_2 library:arduino.lbr | The Arduino Duemilanove ('2009') is a microcontroller board based on the ATmega168 or ATmega328.- 14 digital input/output pins (of which 6 can be used as PWM outputs) - 6 analog inputs, a 16 MHz crystal oscillator- USB connection- power jack- ISP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get startedhttp://arduino.cc/en/Main/ArduinoBoardDuemilanove | Download NowShow Library | ||
variants: | symbol:ARDUINO2009_PIN_1 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:ARDUINO2009_2 | Show Device | |
device:BOARD_ARDUINO-MEGA library:Clean-Kong.lbr | Download NowShow Library | |||
variants: | symbol:ARDUINO-MEGA | package:BOARD_ARDUINO_MEGA | Show Device | |
device:MEGAARDUINO_1 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_1 | package:MEGA_ARDUINO | Show Device | |
device:MEGAARDUINO_1 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_1 | package:MEGA_ARDUINO_1 | Show Device | |
device:MEGAARDUINO_1 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_1 | package:MEGA_ARDUINO_2 | Show Device | |
device:MEGAARDUINO_2 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_2 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:MEGA_ARDUINO | Show Device | |
device:MEGAARDUINO_2 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_2 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:MEGA_ARDUINO_1 | Show Device | |
device:MEGAARDUINO_2 library:arduino.lbr | The Arduino Mega is a microcontroller board based on the ATmega1280.- 54 digital input/output pins (of which 14 can be used as PWM outputs)- 16 analog inputs- 4 UARTs (hardware serial ports)- 16 MHz crystal oscillator- USB connection- power jack- ICSP header- reset button It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.The Mega is compatible with most shields ... | Download NowShow Library | ||
variants: | symbol:MEGAARDUINO_2 symbol:PWR5V symbol:PWR3V3 symbol:PWRVIN | package:MEGA_ARDUINO_2 | Show Device | |
device:PANSTAMP library:srg.lbr | panStamp panStamps are small wireless modules programmable from the Arduino IDE. Each module contains an Atmega328p MCU and a Texas Instruments CC1101 RF interface, providing the necessary connectivity and processing power to create autonomous low-power wireless motes. Everything contained into a compact DIP-24 module. http://www.panstamp.com Vin: 2.5 to 3.6 voltsA4 - SDA A5 - SCL PWM: D3,5,6,9,10,11 Interrupts: D2,3 | Download NowShow Library | ||
variants: | symbol:PANSTAMP | package:PANSTAMP | Show Device | |