#Arduino nano pinout numbers how to#
#Arduino nano pinout numbers serial#

There are several entries in this file that determine the mapping of Arduino pin labels to MCU ports and pins. Each of the 14 digital pins on the Nano can be used as an input or output, using pinMode(), digitalWrite(), and digitalRead() functions. Digital pins: There are fourteen pins that are used for the Digital inputs/outputs and are labeled as D0 to D13, where some digital pins are used. Arduino Nano board contains thirty pins that are used for different purposes, and this usage of the pins is explained in detail in the next sections. Arduino pin D8 is also named PB0, so PortB first pin. What is the pinout configuration of Arduino Nano. When you look at this pinout of the Arduino Nano, you see, that the Arduino pin D2 is also named PD2, which means PortD third pin (counting from zero up). arduino15/packages/arduino/hardware/megaavr/1.8.5/variants/nona4809/pins_arduino.h These groups are called Ports, and are numbered with characters.

#Arduino nano pinout numbers serial#

To allow the Arduino environment to support the extra analog inputs, there are a few lists and structures in the Arduino “pins” definition file for the Nano Every (the same place that we tweaked to add serial ports last time). You’ll need to build a test circuit by connecting an LED and a current limiting resistor to the Arduino (or any 5V power source) like this: First, find out which keypad pins are connected to the button rows. Note that AIN6 (PD6) is not connected and that AIN7 (PD7) is used for AREF.

For our mechatronics projects we are mainly interested in the following pins: Power pins (3.3 V). Reading the data sheet, we can see that the 16 analog inputs are mapped as follows (I’ve included the Arduino pin numbers for reference): For practical purposes ESP8266 NodeMCU V2 and V3 boards present identical pinouts. But the ATmega4809 actually has 18 analog inputs, and the additional ones can be found as extra functions on some of the other pins. This means that it supports 8 analog inputs, labelled A0 to A7, all along one side of the board.

#Arduino nano pinout numbers how to#

The next part in my series on the Arduino Nano Every, looks at how to access the additional 6 analog inputs that can be found scattered around the digital IO pins.Īs I mentioned in my introductory article, the Arduino Nano Every works hard to be “pin compatible” with the original Arduino Nano.