The Arduino platform has become the right hand of most electronic engineers and programmers if they want to develop different types of projects that allow them to do real work. With this platform you can manage all variables, processes and phenomena in the world, which means that it offers a lot of possibilities when you work on it.

To get the most out of this electronic program, we need to know how it works. In order to do this, we need to know that it has 14 digital gates that can function as inputs or outputs, in this case the digital outputs that allow us to act in the real world.

As this component is necessary to develop the platform and achieve the desired results in each of the projects that are carried out on it. Here we show what these digital outputs are, what they are used for and how much each plate contains. Please follow in detail everything we will teach you in the next article.

What are the digital outputs of the Arduino and what are they used for?

Before going directly to the concept of the Arduino digital outputs, it is important to remember that the digital output is a binary signal, which means that it can only vary by two values, usually referred to as -Vcc and + Vcc. It is assumed that the digital outputs are the ones that allow the unit to change the voltage by programming it to one of these two values, allowing different actions with the environment.

In the case of the Arduino, the voltages -Vdc and +Vdc generally correspond to 0V and 5V, but note that some Arduino models use 3.3V instead of 5V. These types of packages are available in mini, nano and wafer, based on ARM processors such as Arduino Due.

As mentioned at the beginning of this message, all digital pins of the Arduino can function as digital outputs or inputs, in the case of outputs it is called I/O, input and output. Note that the exact number of outputs depends on the disc model used, so it is not a fixed number. Finally, it should be noted that digital editions are responsible for making electronic projects work in the physical world.

How many digital outputs does an Arduino have and what is the purpose of each output?

Note that the exact number of digital outputs of a disk depends mainly on the model. In this case, we will show you how many digital releases have the different disc models you can find on the market today.

On the Arduino uno you will find 14 digital pins that can be used as digital inputs/outputs, six of which can be used as PWM (pulse width modulation) outputs, while the other six serve as analogue inputs. In this case, the digital ports of the UNO Arduino change from PIN 0 to PIN 13, as shown in the following figure.

How many digital outputs does the Arduino have and what is the purpose of each output?

If you want to use pins 0 and 1 as digital inputs or outputs, at this point it is important to separate the circuits you use to run the program, because both pins are also used to communicate with the computer.

For the Arduino Float card, they have 14 pins that can be used as a digital output, for the Arduino Mini it is 20 pins and for the Mega model you can have up to 70 digital outputs in total.

Finally, note that the output pins are designed to provide voltage signals, not current signals to the circuit. This means that the maximum current that the digital pin can deliver is 40 mA, which is enough to keep an LED on, so not for something more advanced. Therefore, the charges to be processed must not exceed 5 V and must not consume more than 40 mA.

Which Arduino boards with more digital outputs can we buy?

What are Arduino cards with more digital outputs we can buy?

Currently there are many models of Arduino cards in the world, each with different features, so you can choose the card that best suits your needs. In this case we show you the maps with more digital outputs that you can buy on the market.

Follow the list below:

  • Arduino Leonardo: This type of card is recognized in the computer as a keyboard or mouse and has 20 digital contacts that can be used for output or write.
  • Arduino UNO P3 : Today considered one of the best options to get into programming and electronics with In this case, this robust card is ideal to get into programming, it has a total of 14 digital pins.
  • Arduino 101: The most important advantage is the ease of use in combination with new technologies. For example, this card is able to recognise gestures thanks to the integrated accelerometer and the 6-axis gyroscope. It also offers the possibility to control the table from a smartphone via Bluetooth 4.0. Finally, this card offers 14 digital contacts in your system.
  • Arduino Micro: It is considered to be one of the smallest discs, but it is perfect to turn any kind of object into an Inteligent object. It uses 20 digital outputs.
  • Arduino Nano: This card looks very similar to the Arduino One, but with a much smaller size it has no power connector, so it replaces the standard USB connector with the micro USBconnector. It has a total of 14 digital pins.
  • Arduino Mega: It is a board designed to handle complex projects, which means it has 70 digital inputs/outputs. It has a much larger size than most signs, this is done to make the connections much easier. The possibilities offered by this map are almost endless.
  • Arduino due: This is another card with more output pins, with a total of 54 input/output pins and 12 analog inputs. Like Mega – it is a board designed for complex projects and based on a microcontroller with a 32-bit ARM core.
  • Arduino MKR Zero: An SD port is built into the circuit itself, so you can play music without installing additional hardware. As mentioned in the post, this model works on 3.3V instead of 5V. Its small size makes it ideal for integration into any system you want to control intelligently, and it has a total of 22 output pins.
  • Arduino YÚN: It has a total of 20 input/output pins and is ideal for porting connected device projects, such as. B. Internet of Things (IoT) projects.

Learn step by step how to use Arduino’s digital output for your projects

Discover step by step how to use Arduino's digital output for your projects.

You can easily use Arduino’s digital output for your projects, so you don’t need to be an expert on these platforms to do this.

The output pins must be programmed using the Void Setup function, following the instructions below:

  • pinMODE (PIN Digital, OutPut).

The Digital Pin field must contain the Arduino pin that you want to configure as an output.

In this case you want to define pin 5 as the output pin of the board. To do this, open the vacuum configuration and use the PinMODE statement as follows:

empty parameter () {

pinMode(5,OUTPUT); //Configure PIN 5 as SALIDA DIGITAL}.

There is also another way to program the digital output of the card, for this you have to enter a name for the PIN, in this case PIN 5Keep.

This can also be done from an empty system, as follows:

byte Klem_5 = 5; //Bautiso el Pin 5 con el nombre Klem_5.

Invalid arrangementn() {

pinMode (terminal_5,OUTPUT); //Configure PIN 5 as SALIDA

As you can see, before SETUP there is a variable of the byte type in the declaration field called Terminal_5 which is given the value 5, so that this name can be used at any time in the program if something needs to be done with PIN 5.

It is also possible that one of the variables works with Int instead of Byte. However, it is preferable to use the byte to name the pins, because it is capable of storing integer values from 0 to 255.

Using the digital outputs on the Arduino

When this is done, the configured pins you want to use as outputs, then the next ones will use the outputs, this requires calling a second function in the vacuum loop.

To do this, you must proceed as follows:

void loop() {

digitalWrite(Pin de salida,HIGH); //Energiza la SALIDA DIGITAL (5v)

digitalWrite(Pin de salida,LOW); //DesEnergiza la SALIDA DIGITAL (0v)}

In this case, change the output pin of the Arduino you want to turn on or off. For better understanding, write on the digital output when it needs to be switched on or off. Suppose you want to activate the Arduino’s digital output on pin 5, with which it works.

Use the digitalWrite instruction in the empty loop in one of the following ways:

void loop() {

digitalWrite(5,HIGH); //Activa o Energiza el PIN 5


byte terminal_5 = 5; //Bautiso el Pin 5 con el nombre terminal_5

void loop() {

digitalWrite(Terminal_5,HIGH); //Activa o Energiza el PIN 5


byte terminal_5 = 5; //Bautiso el Pin 5 con el nombre terminal_5

void loop() {

digitalWrite(Terminal_5,1); //Activa o Energiza el PIN 5


void loop() {

digitalWrite(5,1); //Activa o Energiza el PIN 5


As you can see, you can either use the 5 in the function or you can cross the spindle and not use it. You can also see that the term HIGH, which means activation of Arduino’s digital output, can be replaced by the number 1, which means exactly the same.

If you now want to deactivate the PIN 5 code, the procedure is exactly the same as described above, but now there must be a LOW number instead of a HIGH number, and if you want, you can replace it with a 0 number, which means the same, so that you can deactivate the card’s numeric PIN.

If you have any questions, leave them in the comments. We will contact you as soon as possible and it will also be a great help to other members of the community. Thank you so much!

Maybe you are also interested in :

best small business management software,examples of common business tools,small business tools india,online free business tools,free for businesses,business management software free download,saas tools for developers,smb saas products,small saas business,best saas ideas 2019,smb saas market,profitwell metrics,engineering and scientific software,smb software,it for small business,most popular software programs,small business software free,small business must haves,business software list,what is business software,all in one business solutions,business management software capterra,studiocloud,business development software,small business tools 2019,tools for companies,business tools for startups,must have technology for small business,tools for business success,business tools and their uses,what is tool register,tools all businesses need,technology needed for small business,new business digital tools,digital tools for startups,what types of software are helpful for small businesses,smb software tools,it application tools in business,free tools for small business owners,free business tools for startups,business tools software,business software examples

You May Also Like

How to Cancel Comcast Service (Step-by-Step Procedure)

Comcast is the largest name in the telecommunications industry, supporting broadcast and…

How to save storage space on Android 11

Even though it is not as ordinary as it was seven years…

Fix: Facebook app keeps stopping on Android

Whether you like it or not, Facebook has a huge user base…

Android library for in-app language changes support in your app

As any user, you may want to view your app in a…