- #Arduino nano pinout power serial#
- #Arduino nano pinout power manual#
- #Arduino nano pinout power code#
- #Arduino nano pinout power free#
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 ATmega168 and ATmega328 provide UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). The Arduino Nano has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. See also the mapping between Arduino pins and ATmega168 ports. Typically used to add a reset button to shields which block the one on the board. Bring this line LOW to reset the microcontroller. There are a couple of other pins on the board: Support I2C (TWI) communication using the Wire library (documentation on the Wiring website). Additionally, some pins have specialized functionality: 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. The Nano has 8 analog inputs, each of which provide 10 bits of resolution (i.e. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There is a built-in LED connected to digital pin 13. These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the Arduino language. Provide 8-bit PWM output with the analogWrite() function. See the attachInterrupt() function for details. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. These pins are connected to the corresponding pins of the FTDI USB-to-TTL Serial chip.Įxternal Interrupts: 2 and 3. Used to receive (RX) and transmit (TX) TTL serial data.
In addition, some pins have specialized functions:
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. The ATmega168 has 1 KB of SRAM and 512 bytes of EEPROM (which can be read and written with the EEPROM library) the ATmega328 has 2 KB of SRAM and 1 KB of EEPROM.Įach of the 14 digital pins on the Nano can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions.
#Arduino nano pinout power code#
The ATmega168 has 16 KB of flash memory for storing code (of which 2 KB is used for the bootloader) the ATmega328 has 32 KB, (also with 2 KB used for the bootloader). As a result, when running on external (non-USB) power, the 3.3V output (which is supplied by the FTDI chip) is not available and the RX and TX LEDs will flicker if digital pins 0 or 1 are high. The FTDI FT232RL chip on the Nano is only powered if the board is being powered over USB.
The power source is automatically selected to the highest voltage source. 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). Microcontroller Atmel ATmega168 or ATmega328ĭigital I/O Pins: 14 (of which 6 provide PWM output)įlash Memory: 16 KB (ATmega168) or 32 KB (ATmega328) of which 2 KB used by bootloader
#Arduino nano pinout power free#
Note: since the free version of Eagle does not handle more than 2 layers, and this version of the Nano is 4 layers, it is published here unrouted, so users can open and use it in the free version of Eagle.
#Arduino nano pinout power manual#
The Nano was designed and is being produced by Gravitech.Īrduino Nano 2.3 (ATmega168): manual (pdf), Eagle files. It lacks only a DC power jack, and works with a Mini-B USB cable instead of a standard one. It has more or less the same functionality of the Arduino Duemilanove, but in a different package. The Arduino Nano is a small, complete, and breadboard-friendly board based on the ATmega328 (Arduino Nano 3.0) or ATmega168 (Arduino Nano 2.x).
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