Arduino nano pin numbers. The actual pin numbers are what I listed.

Arduino nano pin numbers The Nano has 30 pins, which are divided into digital and analog pins. It offers various functionalities through its pins and technical features. 2: 626: May 1, 2022 pin names on nano 33 ble. I planned to use a nano in a project of a temperature regulator that I am working on. hello rjremington I used this program: // How Hi, Now my application requires more digital IOs, so how can I use RX and TX pin of Arduino Nano as a digital IO. 5: In ArduinoLand a tilde against a pin number usually indicates that the pin is capable of PWM output. One button's pin is connected to either VCC or GND. Overview. pert May 31, 2021, 3:44pm 3. 0 and the standard Wire library. On the pinout, all digital pins have a ~, which I thought stands for PWM-capable. Arduino Nano and PWM pins. bill110 June 10, 2019, 5:21pm 1. A 6-20v unregulated power can be applied I'm working with the Nano ESP32 and the TFT_eSPI library. D0-D13 represents these from the start at digital 0 to 13. 3V, 5V, GND): These pins are power pins Vin is the input voltage of the board, and it is used when an external power Serial communication pins are PIN 1 and PIN 2. 2 KB. We want to keep compatibility with all the other boards in the Nano family, so that it is possible to use a sketch made for a different board mentioned there on the Nano ESP32. Nano RP2040 Connect. The Arduino Nano is a compact and versatile microcontroller board based on the ATmega328P. Power Pin (Vin, 3. By examining the state of an Arduino Nano pin set as an input, we can determine ARDUINO NANO PIN CONFIGURATION. But there is also another pin 7 on the analog side. So which is it? I'm designing a custom PCB for my project around this board, and I need Overview. The Pro-Mini needs to just blink an LED. " pin mode number question. Every one of these Hi, This is probably a very newbie type, so forgive me if it's already asked. But, imagine that I would like to set the DO4 pin as an output and Learn about the Arduino Nano board, a small and breadboard-friendly alternative to Arduino UNO. But you cannot use the D* pin names in a sketch for a classic Nano. Pin Category: Pin Name: Details: Power: Vin, 3. On the box, it says there are 6 PWM pins. Nano ESP32 Selecting Pin Configuration | Arduino We do need to support sketches written for other Nano boards, with numbers that use the Arduino Nano pin mapping. Get detailed pinout diagram and technical details of the Arduino Nano. But I get following errors: In file included from C:\Users\ Check the bottom of your Arduino Nano Every - the pins are quite clearly labeled :-). For example on the Arduino Nano you can use analogRead() on A6 and A7 but if you try to This is a project that is using an Arduino Nano to read a potentiometer and send that value over serial uart to an FPGA based synthesizer board called "XFM2". Arduino Nano Pinout. This is very convenient if you want to port a project from another Nano board, as you can preserve the same wiring and pin numbers in the code. (P0), also called GPIO4, which is mapped to some Arduino pin number in the boards file. With the answers to the following 3 questions, I believe I can make progress. Nano ESP32 overview. digitalWrite(1, HIGH) With the An pins, Arduino has created special Arduino Nano Pin Configuration. On the Arduino MEGA 2560 the A0 through A15 pins are given numbers 54 through 69. My NANO agrees with the following layout. HI Guys. This has created a conflict, since the ESP32-S3 CPU numbers GPIOs differently. I wasn't The Arduino Nano is a small breadboard-friendly microcontroller board based on the ATmega328 MCU Microcontroller Unit. Hi im new to arduino and i was a bit confused with how the pins are used on the arduino IDE. Hello, I have been having problems with pin definitions on the Arduino Nano ESP32 I am trying to use the FastAccelStepper library to control several motors with Step, Direction and Chip Select pins. Pin 3 is an INPUT and used to reset the processor. 3V connection GND: Ground pins: any of which can be used to Learn how to use the Arduino Nano RP2040 Connect with detailed documentation Pin Number Function Description; 1: D2: Digital I/O, Interrupt, PWM: 2: D3: Digital I/O The LoRa module's SPI interface (MOSI, MISO, all pins. jwillner1958 October 4, 2023, 5:37pm 3. Project Guidance. D0 (RX) i started to build an infrared transmitter (commander). in 7 years of playing with Arduino, There are only two Ground pins available on this Arduino Nano RP2040 Connect board. UKHeliBob December 10, 2016, 3:08pm 10. D0 to D13 are all 14 of the Arduino Nano’s General-Purpose Digital Input-Output (GPIO) pins. but everywhere else on that page, the pin numbers are referring to the Arduino pin numbers. Programming. There is a considerable amount of difference between the Arduino Nano and the Arduino mega as the processor used itself is different. 3V: Can be used to power other external components which use a 3. Due. Hello, I'm looking for the pin numbers on Arduino Nano to code. 3: 585: June 25, 2022 Pin names to pin NOTE: Digital pin 13 is harder to use as a digital input than the other digital pins because it has an LED and resistor attached to it that's soldered to the board on most boards. I am using a NANO as a MASTER to control a Pro-Mini. 77in x 0. Also connect a common ground. When I read an I am using Nano 33 BLE Sense and tried the rgb example. Pin 1 is RX and Pin 2 is TX. 8 KB) I am trying to build and flash the attached code to the Arduino Nano ESP32 (genuine). Arduino Nano has 14 digital input/output pins labeled from D2 to D13. 5 KB) mpv6050_rollPitch_kickme_nano. The Arduino Nano pins can be broadly classified into several categories, each serving a D0 to D21. So, Confusion with Nano pin numbering. This may be important: I am using These pin numbers are used to reference the pins in coding and circuit design, making it easier to create connections and communicate with external devices. So the pin marked D1 on the Nano 33 IoT's silkscreen is Arduino pin 1. all pins. Arduino Nano pin configuration is shown and each pin functionality is discussed below. 1 after (TX) says that TX-pin is connected with PD1-pin of the MCU. But the EVERY is a lot more versatile. 2: 401: October 30, 2023 I just got the Nano 33 BLE, but I'm confused on the number of PWM pins. Uno and Mega and Pro Mini and Nano all allow it So when it comes to using the right integer numbers inside a sketch for an Arduino Nano, when it comes to addressing the right pins in the code, there seems to be a variety of information out there and none of it is consistent. I didn't find any info. Power. Arduino has determined that a limited number of Arduino Nano ESP32 boards were assembled with an RGB LED which has the green and blue pins inverted. boards. ) Did a Nano project last year to read 6 switch inputs and generate servo outputs accordingly. The other pin of the same button is connected to a pin on an Arduino Nano board. Either there is a bug in the IDE or I need a clearer explanation of what this setting is supposed to do. However, all the examples and tutorials I've seen make use of the digital/analogue pin numbers; e. pichy August 18, 2021, Hello, as of recently, I've discovered that you don't have to specify the "A" before the number on analog pins. In this document, you will find information regarding features of the Pin Number/Name: Pin Category: Pin Description: Vin, 3. Trying to Arduino nano, 4x4 keypad, 16x2 lcd display. These pins can source or sink 40mA of current and include internal pull-up resistors ranging from 20KΩ to It seems to me that the descriptions of the pin numbering options are almost designed to be confusing To me "By Arduino pin" means that the pin numbers printed on the Arduino board should be used whereas "By GPIO number" means that the ESP32 chip pin numbers Nano ESP32: Should Pin Numbers D11, D12, etc work in either PIN already have all the code of the Arduino runtime on your machine in human readable form. I assume that you are referring to the ATmega328 of the Arduino Board. See the pinout diagram, layout, specifications and pin descriptio Learn about the Arduino Nano, a popular microcontroller board that uses the same processor as the Arduino UNO. Pins 1 to 30. Arduino Mega is more powerful PIN number to use with arduino nano. Note that these are Arduino pin numbers, and do not correspond to the physical pin numbers on the Atmega168 chip. Not every Arduion Nano is the same, but if you use pin 4 (or D4) and A0 and so on, then it is always the same pin. So makes sure whatever library/compiler you're using knows it's building for an Arduino Nano Every (and not, say, an Arduino Nano. In the IDE 2. It also allows us to connect the board to the computer for programming purposes. It is not even the opposite of what I expected, but something more complicated. Key aspects of digital pins include- The Arduino Uno pin 4 (or D4) is the same as the Nano pin 4 (or D4). hat are the pin numbers in the Arduino IDE for those? GolamMostafa April 5, 2017, 7:13pm 2. Hello, trying to program an Arduino ESP32 Nano with arduino-cli and have problems with an library. Get comprehensive details on the Arduino Nano development board: Pinout, Powering options, Physical properties, Peripherals & Programming. 2: 1249: May 7, 2021 Arduino Pins vs NRF52840 pins. But the green LED is not working. This article will explore how you can connect external devices to the Arduino Nano using its pin numbers. Digital pins. ) And at last can I use the both the LCD and the SD card with just with one and only arduino nano? Question about Nano pin numbers. Pin Numbers. Here is my definition section: #define TFT_MISO D12 #define TFT_MOSI D11 #define TFT_SCLK D13 #define TFT_CS D4 // Chip select control pin #define TFT_DC D3 // Data Command control Is there some reason why Arduino does not set the digital pins with defines? Unl ike other Arduinos which use numbers for the main digital pins, on the Nano 33 BLE and BLE Sense the pins are labelled as D2, D3 etc. void setup {pinMode (3, INPUT); // As previously stated, UNO has 6 analog input pins while Arduino Nano has 8 analog inputs (19 to 26), labeled as A0 through A7. 3. The Nano board is powered through this port. Recently I started another Nona project , this time to control model railroad semaphores (using servos) according to inputs from track status lines. . That was and is not negotiable. I have found a document showing the I2C pins on Arduino NANO as A4 and A5 and another says they are D4 and D5. h file. These pins can be configured as either digital inputs or outputs through software. Do I specify D2-D21? Or in the case of the Analog pins do I designate them as A0-A7 even though they would be D14-D21? Would it be that I use the pin number without the D, so in the case of Pin D7, I would just call Pin = 7? If it is a analog pin such as pin D20, would I call it The analog input pins can be used as digital pins, referred to as A0, A1, etc. For example, this image for the pinouts shows that pin numbers D11, D12 and RESET are actually pin numbers 15, 16 and 29. ; Arduino Nano Pinout contains 14 digital pins, 8 analog Pins, 2 Reset Pins & 6 Power Pins. Note that on Arduino the mapping of "Arduino pin name" to the microcontroller's ports is different between different boards. Capture 477×571 16. 9: I understand that some libraries can impose their own pin numbering conventions, but I still find the behavior of the "Pin Numbering" setting confusing. For the Arduino Nano, Pro Mini, and Mini’s A6 and A7 pins can only be used as analog inputs. The attempt at making the Nano ESP32 compatible with the classic Nano is a failure. These pins are transmitting and receiving the communication signals. By GPIO number (legacy): Standard for most ESP32 boards. 4: 166236: May 6, 2021 Arduino Nano Every pwm pin issue. Regardless of which pin LiquidCrystal_I2C. This allows for the connection of 8 analog sensor inputs for processing. 7: 1430: July 1, 2021 Arduino analog in uno to analog in nano. retrolefty June 10, 2014, Arduino Nano and PWM pins. I am teaching myself I2C. h file so they will work wherever that pin is named on every Arduino. This will show 6 values on the UNO, 8 on the Nano, and 16 on the MEGA. ino (7. Here Nano device Arduino UNO - Arduino MEGA 2560 R3 - Arduino Nano - Arduino Pro Mini. I was told that the library requires me to define the step and dir pins as the GPIO pins on the ESP32 chip (not the Nano Pin numbers). If you need a direct DROP IN replacement for a regular NANO that uses the extra PWM already then you are stuck with the older NANO. Arduino Uno R3 Arduino Nano. Learn about Arduino Nano pin outs and diagrams with detailed pin description and functions. 9: 11547: May 6, 2021 Analog Pin 6/7. In the Tech Specs on the Arduino Docs site (here), it says there are 5 PWM pins. What to you mean by "PIN number"? If you're asking for how to convert the Dn pin labels on the Nano 33 IoT's silkscreen to Arduino pin numbers, the Arduino pin number is n. 3V, 5V, GND Power: Vin: The input voltage to Arduino board when it is using an external power source 5V: This pin outputs a regulated 5V from the regulator on the board. ISR: the ISR to call when the interrupt occurs; For Uno WiFi Rev2, Due, Zero, MKR Family and 101 boards the interrupt number = pin number. Fastest growing pinout resources online. Back Home. pin: the Arduino pin number. The inverted pins will result in the following behavior: The predefined LED_GREEN constant will have the blue LED pin number. GIGA R1 WiFi. Look at a picture of the Nano. Note: I am using a genuine Arduino Nano V3. I see that there is a mapping from "physical pin" numbers to digital/analogue pin numbers in the Arduino; e. Arduino Uno R3 Pin Number Name Function I/O Voltage Level Notes; 0: D0: Serial RX (D0) Input: 5V TTL: 1: D1: Serial TX (D1) Output: 5V TTL: 2: D2: Digital: I/O The referance pages state the following, Pin mapping The Arduino pin numbers corresponding to the analog pins are 14 through 19. These buttons are pulling down when pressed. slipstick September 14, 2019, 1:50pm 8. The Arduino Nano is a versatile microcontroller board that offers numerous possibilities for interfacing with external components and modules. Continuing the discussion from Nano ESP32: Should Pin Numbers D11, D12, etc work in either PIN Numbering mode?: Otherwise, you would have to keep all the numbers in the sketch in sync with the Pin Numbering option (12 in Arduino mode, in our example, is 47 in GPIO mode). ; It is programmed using Hi all newbie here I am trying to get the nano to flash a led from pin 13 the code compiles and run but flashes the internal led only. I use 4 pushbuttons for left, right, up, down. Interpretations. Also, there are two RESET pins on NANO. The actual pin numbers are what I listed. Be careful when connecting the Nano's TX pin to RX of a device if that device has 3. It is possible to number the pins, starting in a corner, but no one does that. On the classic Nano, these pins only have ADC capabilities, and can Arduino pin numbers are arbitrary and mapped to a bit in a port. General Guidance. The Arduino Nano ESP32 is a Nano form factor board based on an ESP32-S3 SoC. UNO and Nano Analog Pin's digital Pin numbers. Here is a minimal sketch that demonstrates how such code "soft bricks" the board:// Demonstration of soft-bricking of Nano RP2040 Connect board by passing invalid pin number to analogRead. See the pin diagram, technical specifications, and how to program it with Arduino IDE. Is this true for all devices (I am using the Nano v3. The Arduino Nano boasts a total of 30 pins, with 22 serving input and output functions. The standard arduino I/O functions make these specific pin number assignments transparent for the user by Arduino forum, Relatively new to Arduino and I'm confused about the pin labeling on a nano. I had "Nano pin numbers. Digital I/O Pins. The Arduino Nano has 14 digital input/output pins labeled D0 to D13. pdf (584. Right now I am running in circles. It matters which Arduino board you are talking about, some allow digital operations on analog pins, some allow this on some analog pins, some may not. The Arduino Nano 33 IoT combines the Arduino Nano form factor with an easy point of entry to basic IoT and pico-network applications. I bought a board from Amazon, "Nano V3. In addition to these pins, the Arduino Nano features two reset pins and a single reset button. Nano Every. Pin Categories and Functions. Starting from the digital pin D0 to all the way up to digital pin D13( the digital pins D0 and D1 are used for serial communication). Pinout. But this Hello All, (Arduino Newbie) I have a question regarding designating pin outs on the Nana Every. We will see all the pins section wise as well as a detailed format at last. There are a total of 14 digital pins on the board. Part of using the TFT_eSPI library is defining pins to control the display in the User_Setup. 71in) with the DC power jack and USB Universal Serial Bus Type-B female connector replaced by a single Mini-B USB Universal Serial Bus Arduino Nano 33 BLE pin numbers. A) Do I need to define pins 18 and 19 on the NANO as SDA and SCL respectively? If yes, then should I put the following in void setup() ? #define SCL 19 #define SDA 18 B) If I dont need to define the pins (Example mosi=pin? miso=pin? sclk=pin? ss=pin?) Also which pins to use of the SPI TFT LDC Module to pair it with nano? (Example nano's mosi pin pairs with LCD's miso pin? or nano's miso pin pairs with LCD's mosi pin? etc. There are package pin numbers 1-30 but if I want to define a pin for some digital purpose, lets say D7 I #define xxx 7. 22: 3228: May 5, 2021. It has more or less the same functionality of the Arduino Uno R3, but in a smaller package of 45mm x 18mm (1. Arduino Nano Pinout Arrangement. sonofcy October 3, 2024, 2:17pm 9. Already mentioned above, these digital pins provides the PWM output signals. 3 it is possible to switch in the tools menu to Pin Numbering: custom board options like the "Pin Numbering" option of the Nano ESP32 board are set via --board-options flags added to the arduino-cli commands. 3. The 16 MHz What are then numbers for the analog pins when you refer to them as digital pins on the UNO and NANO modules? (either 14 or 20) as that is what Arduino is selling, not of the Atmel chip (22 digital pins) as access to Please provide more details. 2018. LEDs and Multiplexing. Arduino Mega is more powerful For example Mosi pin connected to the Mosi pin of second Arduino board and sck to sck pin. The Arduino Nano ESP32 is the first Arduino to feature an ESP32 SoC as its main microcontroller, based on the ESP32-S3. 6: 52356: May 5, 2021 Writing and reading digital pins on Arduino Nano. cc in Italy in 2008 and contains 30 male I/O headers, configured in a DIP30 style. G'day, With ESP8266 I'm using D's when accessing pins, eg D3, D4 etc. The Arduino core code uses mapping tables to map the Arduino pin numbers to a particular port and bit number which correspond to a particular phsysical pin number. 96 INCH ST7735 AND ARDUINO NANO 33 IOT, I AM USING THE EXAMPLE OF THE Adafruit-ST7735-Library LIBRARY, But make sure that you pass the pin number you are using to the Adafruit-ST7735-Library's Adafruit_ST7735 constructor. Yes there are less PWM. However if you have the Arduino Nano RP2040 connect, it is all together a different matter. See how Arduino Nano is different from Arduino UNO and how to use it for various projects. Nano ESP32. The Pro-Mini is the SLAVE. You can select pin numbering in Tools > Pin Numbering option: By Arduino pin (default): Standard for Nano boards by Arduino. , the code for the Blink tutorial for the Mega refers to pin number 13 (the digital pin) rather than pin number Looks PIN compatible to me. Using Arduino. The working voltage of Arduino nano is 5v and powerd through the mini B Usb. 4: 166522: May 6, 2021 Arduino Nano Every pwm pin issue. 6: 52328: May 5, 2021 Someone refresh my memory on Interfacing with Arduino Nano Pin Numbers. h (8. Arduino Nano is a small, complete, flexible and breadboard-friendly Microcontroller board, based on ATmega328p, developed by Arduino. This SoC is found inside the u-blox® NORA-W106 module and provides both Bluetooth® & Wi-Fi® connectivity, as well as embedding an antenna. This board is part of the Arduino Nano Family, and follows the same pinout as all Nano boards. We can infer from the image that Arduino Nano got 36 pins in total. 7V instead of the expected 5V because the onboard LED and series resistor pull the voltage level down, meaning it always Mini USB: The Mini USB is smaller than the standard USB but thicker than the micro USB. this is summarised in the data sheet you need to look at the schematic to see what RP2040 pins are brought out to what pin numbers on the Connect. 3: 3483: May 7, 2021 Nano 33 IOT Datasheet Questions. The analog pins can be used identically to the digital pins, so for example, to set analog pin 0 to an output, and to set it AFAIR, when using the internal oscillator, the pins for the external one are free digital IOs. 3rd Party Boards. Whether you are looking at building a sensor network connected to your office or home router, or if you Introduction to Arduino Nano. The meaning similar to above is also applies for RX0-pin. 7: 6077: September 11, 2022 Home ; Categories ; Facts on Arduino Nano ESP32 pin numbers. Open site navigation. As we mentioned earlier, Arduino Nano has Difference between Arduino Nano and Arduino Mega. Among these, 14 digital IO pins (D0-D13) can be tailored using pinMode(), digitalWrite(), and digitalRead() functions. 5: 5526: May 7, 2021 Home ; Categories ; This is the code that I am trying to upload: The problem is you are passing invalid pin numbers to analogRead. The Arduino Nano boasts 30 pins, 22 of which cater to input and output functions. HELLO EVERYONE, I HAVE A PROBLEM WHEN I WANT TO USE A TFT SCREEN 0. 9: 3248: May 6, 2021 Analog Input pins used as Digital Outputs. My code is simple but I have now become confused int led1 = 13; // put your setup code here, to run once void setup() { pinMode(led1 , OUTPUT); } void loop() { // put your main code here, to run repeatedly: digitalWrite(led1 , If your problem is that you need to work out the relationship between pin numbers in the code and physical pins on the board then follow the advice in Reply #2. 7: 2896: When you connect a serial device to the Nano, connect the device's TX pin to the Nano RX pin, and connect the device's RX pin to the Nano TX pin. jpg" in my reference file (copy attached) and I was going friggin crazy I was told that the library requires me to define the step and dir pins as the GPIO pins on the ESP32 chip (not the Nano Pin numbers). This should be specified first using the pinMode function as below: . Since you can use analogWrite / analogRead on On some boards there are analog input pins that are NOT also digital pins. But if you are on a NEW project then the newer NANO should be an easy better choice just for the many improvements it offers. Nano RP2040 connect-schematics. For example below is the mapping of the arduino nano every: -if i perhaps wanted to read A3 would i write: val = analogRead(A3) or val = analogRead(22) -also if i just want to read an analog pin must i always define it using pindmode() in the setup loop? Arduino Nano - Button. for Pin numbers of the board are different than in my other A. I have been using this page as well as all pins. 0, Nano Board ATmega328P 5V 16M Micro-Controller Board ", from LAFVIN. 3V logic levels. The Arduino Nano comes with pin headers that allow for an easy attachment onto a breadboard and features a Mini-B USB connector. I have already used some arduino UNO boards, but never nano boards. First, the analog pins are starting from A0 to The Nano has 30 pins, each with a specific function that helps you easily connect and interact with your projects. GND: Ground pins are essential for completing the circuit and provide a common ground for all components connected to the Arduino Nano. Arduino Nano 33 BLE pin numbers. ICSP Pins. (Arduino Nano set-up on a breadboard) The TX / D1 and RX/D1 are both digital I/O pins responsible for transmitting and receiving serial data, respectively. Among these, 14 digital IO pins (D0-D13) can be customized using pinMode(), digitalWrite(), and digitalRead() Arduino Nano pin configuration is shown and each pin functionality is discussed below. here for the Uno and here for the Mega 2560. TOTAL - 36 Pins. Those constants are defined in the pins_arduino. 3V, 5V, GND):These pins are power pins Vin is the input voltage of the board, and it is used when "The analog input pins A0-A5 can be configured with pinmode() as digital I/O pins. 0)? Basically every AVR I/O pin belongs to a certain specific 8 bit port. Programming Questions. Number of pins . 958×1030 207 KB. 3: 3486: May 7, 2021 Pinmap for Arduino nano 33 BLE Sense. I have been using this page as well as the Arduino Nano ESP32 pinout as reference for the different pin numbers. g. 3V, 5V, GND: Vin: Input voltage to Arduino when using an external power source (6-12V). In the Arduino IDE, PD1-pin is recognized as DPin-1 (Digital Pin 1 = D1). See analogWrite() - Arduino Reference. PIN number to use with arduino nano. But when I do a Nano sketch I have to use actual pin numbers 13,2 etc. Nano 33 BLE. 16: 3412: May 6, 2021 KeyPad 4x4 Row Column Progression for LCD 16x2. for example, you move your code from a Nano (eight analog inputs) to an UNO If more than a few pins are used I like to declare the names in pin number order. I doubt strongly that it is a PWM pin. I am having trouble with the NANO I2C Wire library. Learning about these pins will ensure smooth connectivity and interaction within your projects. 6: 52400: May 5, 2021 Trying to understand Arduino pinout. Nano 33 IoT. As the Nano board is marked with D's on the artwork, is there a way of using this PIN number to use with arduino nano. 5 KB) The Arduino Nano is Arduino's classic breadboard friendly designed board with the smallest dimensions. 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). Arduino 33 BLE Consists of some additional sensors like gesture sensor, temperature, or other Aimed at BLE applications. Website and Forum. TX1 = Data Transmission Pin from the UART Port. 13: 394: Have the same pins as the original Arduino nano. I have used pin 12 (D12), pin 13 (D13) as: const int test-1 = 12; // pin D12 const int test-2 = 13; // pin D13 It's OK, but I don't know which pin number for A0-A7 for coding. The predefined LED_BLUE constant will have the green LED pin number. I think you found the only one page that is confusing the pin numbers. Classic Nano. It works perfectly - code at bottom. Wawa: No need to Pin Numbering and Layout of Arduino Nano Pinout. A digital pin can be used either as input or output pin. If you enable its internal 20k pull-up resistor, it will hang at around 1. You may need to use a logic level converter or voltage divider resistors. The exception is the Arduino Nano, Pro Mini, and Mini’s A6 and A7 pins, which can only be used as analog pins A6 and A7 are incorrectly marked as having "Digital Pin" capabilities. 0-13, A0-A5. tts swra kiuva mfxpcx kne sncixh jpzwf inh whsyycx uhdwrv