has become the right hand of most electronics and programmers when you want to develop different types of projects that allow you to do some work in the real world. This is how this platform allows control any variable, process and phenomenon in the worldwhich means that it offers a large number of possibilities when working there.
In order to get the most out of this electronic program It is essential to be able to know how it works, for this we must know that it has 14 digital ports which can function as entrances or exitsin this case digital outputs They are the ones that allow you to perform actions in the real world.
Bearing in mind that this component is essential for the development of the platform and for . Here we are going to show you what they are digital outputsWhat are they for and how many of them? contains each platefor this, follow in detail everything that we are going to teach you next in the post.
What are the digital outputs of an Arduino and what are they for?
Before going directly into the concept of Arduino digital outputs It is important to remember that a digital output is a binary signalthis means that it can vary only in two valuesthis is usually called –Vdc and + Vdc. Bearing this in mind, it can be said that the digital outputs They are those that allow a device to vary its voltage to one of these two values by programming, therefore, they allow various actions to be carried out with the environment.
In the case of Arduino, the voltages are usually –Vdc and +Vdc, These correspond to the values of 0V and 5V, but keep in mind that some Arduino models work with 3.3V instead of 5V. These types of cases can be seen in the Mini, Nano and the plates which are based on processors ARM What Arduino Duet.
As mentioned at the beginning of the post, all Arduino digital pins can work as digital outputs or inputs, in the case of outputs it is called I/O, Input and Output. It should be noted that the exact output number will depend on the board model being used, so this is not a fixed number. Finally, it must be highlighted that digital outputs They are in charge of allowing electronic projects can do work in the physical world.
How many digital outputs does an Arduino have and what is each one for?
It should be noted that the exact number of digital outputs of a plate will depend mainly on its model, in this case we are going to show you how many digital pins They have the different models of plates that you can currently find on the market.
In the case of arduino uno can be found 14 digital pins who can act as digital inputs/outputs, where six of them can be used as PWM outputs (pulse width modulation) while another six as analog inputs. In this case the digital ports of the Arduino UNO they go from the PIN 0 to PIN 13 as shown in the following image.
if you want to use pins 0 and 1 What digital outputs or input It is important that you disconnect the circuit with which you are doing the program at that moment, since both pins are also used for communication with the computer, so you must break the circuit so that this allows to be programmed.
for the plate Arduino swim are counted 14 pin that can be used as digital outputs, for the Arduino Mini will have 20 pins and for the model Mega you can have up to a total of 70 digital outputs.
Finally, we must bear in mind that the output pins have been created to deliver voltage signals, not to supply current to a circuit. This means that the maximum current that a digital pin can supply is 40mAenough for turn on an LED, so it won’t be enough for something more advanced. In this way, the loads to be handled should not exceed 5V or consume more than 40mA.
What are the Arduino boards with the most digital outputs that we can buy?
Currently there are many Arduino board models Available worldwide, each one of them offers different characteristics so you can choose those that are most adapt to your needs. In this case we are going to show you those boards with more digital outputs that you can buy in the market.
To do this, follow the list that we will show you below:
- : This type of board is recognized in the computer as a storage device. keyboard or mouse and it has 20 digital pins that can act as output or input.
- : Considered today as one of the best options when starting in programming and electronics with In this case it is a robust plate ideal for taking the first steps in programming, it has a total of 14 digital pins.
- Arduino 101: Its main advantage is the ease of use which combines it with new technologies, this is how this plate has the ability to recognize gestures thanks to the 6-axis accelerometer and gyroscope that it has integrated in there. It also offers the possibility of managing the panel from the smartphone through Bluetooth 4.0. finally this board offers 14 digital pins in your system.
- : It is considered one of the smallest plates, but which is perfect for turning any type of object into a Inteligent objectit makes use of 20 digital outputs.
- Arduino nano: This board is quite similar to the one in Arduino Onebut this much with a much smaller size, having a much smaller size does not have a connector power supply, this is how it has replaced the standard USB connection with a micro-USB connector. It has a total of 14 digital pins.
- Arduino Mega: It is a plate that has been created to carry out complex projects, this is how it has 70 digital inputs/outputs. It is much larger than most boards, this has been done so that connections much easier to make. The possibilities you have with this board are practically endless.
- : This is another of the boards with the most output pins available, it has a total of 54 input/output pins and 12 analog inputs. Like Mega is a board developed to carry out complex projects and is based on a microcontroller with 32-bit ARM core.
- : It is characterized by having an SD connector integrated into the circuit itself that will allow play music no need for iinstall extra hardware. As previously mentioned in the post, this model works with 3.3V instead of 5V. It has a small size that makes it ideal to be integrated into any object that you want to work intelligently and has a total of 22 pin output.
- : It has a total of 20 input/output pins and it is an ideal bale for carrying connected device projects, such as the projects of the Internet of things (IoT).
Learn step by step how to use an Arduino digital output for your projects
Being able to use a Arduino digital output for your projects is very easyso you don’t need to be an expert on these platforms to achieve this.
In order to carry out the process of programming an output pin, it must be done from the “Void Setup” function and for this the following instruction will be used:
- pinMODE (Digital PIN, OutPut).
in the space of digital pin should be replaced by arduino pin that you want to configure as output.
In this case, you want to configure Pin 5 as the output pin of the board, so for this it will be necessary to access the Void Setup and there use the PinMODE instruction as follows:
void setup() { pinMode(5,OUTPUT); //Set PIN 5 as DIGITAL OUTPUT}
Also there is another way to program the digital output of the boardfor this you must declare a name for the PINin this case PIN 5keep in mind that you can call the PIN you choose with the name you want.
This will also be done from void setup as follows:
Terminal_5 byte = 5; //Named PIN 5 “Terminal_5” void setup() { pinMode(Terminal_5,OUTPUT); //Set PIN 5 as OUTPUT
As you can see, before the SETUPa variable of the type has been declared in the declaration area “Byte” which is baptized as “Terminal_5” and has been assigned the value of 5, so you can use that name anywhere in your program where you need to do something with it. PIN 5.
It is also possible that you get “int” instead of “Byte” either variable works. However, for when it comes to naming pins it’s better use Byte since it is capable of storing integer values ranging from 0 to 255.
Using digital outputs on Arduino
When it’s done configured the pins what do you want to use as exit, then the following will be use the exitsfor this it is necessary to use a second function, which must be called inside “Void loop”.
To do this you must do the following:
void loop() { digitalWrite(Output Pin,HIGH); //Energize the DIGITAL OUTPUT (5v) digitalWrite(Output Pin,LOW); //De-energize the DIGITAL OUTPUT (0v)}
In this case, we must replace the variable Output pin for the Arduino pin what do you want energize or de-energize. To better understand this, you must write to the digital output if you want it to be activated or deactivated. Suppose you want to activate the digital output of the Arduino in the Pin 5 with which it has been working.
To do this, it is necessary to use the digitalWrite instruction inside the Void loop using any of the following ways:
void loop() { digitalWrite(5,HIGH); //Activate or Energize PIN 5 } byte Terminal_5 = 5; //Name PIN 5 with the name “Terminal_5” void loop() { digitalWrite(Terminal_5,HIGH); //Activate or Energize PIN 5 } byte Terminal_5 = 5; //Name PIN 5 with the name “Terminal_5” void loop() { digitalWrite(Terminal_5,1); //Activate or Energize PIN 5 } void loop() { digitalWrite(5,1); //Activate or Energize the PIN 5 }
As you can see, you can use the 5 inside the function or you can also name the Pin and not use itit can also be seen that the term HIGH What does it mean enable Arduino digital outputcan be replaced by number 1 which will indicate exactly the same thing.
Now if what you want is deactivate pin 5then the procedure to be carried out is exactly the same as mentioned above, but now instead of set HIGH must be place LOW and if you want you can replace it with the number 0 which means the same thing, this will allow you disable board digital output.
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