Today, Arduino is one of the most valuable tools for getting started in electronics , given that it was designed for artists, designers, hobbyists, and anyone interested in creating electronic projects , both in software and hardware. This is primarily because Arduino doesn't require a separate piece of hardware to upload new code to the microcontroller ; it uses a USB cable.
In addition, thanks to its use of a simplified version of C++ , the Arduino IDE is characterized by its ease of programming. Furthermore, this board can interact with buttons, motors, speakers, cameras, LEDs , GPS units, smartphones, and the internet. This makes it a flexible software and hardware solution for educational projects or any electronics project.
But beyond its useful features for this purpose, it's important to know each and every component of an Arduino board . These elements are essential for getting started from scratch and programming your first open-source projects correctly. Therefore, below you will learn about the modules that make up an Arduino board.
All the components that make up an Arduino board that you need to know to learn to program from scratch
While it is true that Arduino is an electronics prototyping platform based on a board that has several components from which it manages to operate as a device that connects the analog world with the digital world.
Therefore, to explain in more detail what an Arduino board consists of, it is worth knowing what its parts are and what they do, here:
Microcontroller
It's an integrated circuit defined as the part that processes all the information and, therefore, is the area where the code known as a "Sketch" is saved in the Arduino software. It 's considered the brain of an Arduino board and is characterized by its black color and metal pins.
In that sense, the microcontroller of an Arduino board operates as a programmable integrated circuit that, by default, has the ability to perform complex mathematical operations at high speed.
Digital Pins
These pins detect whether there is a logic ZERO or ONE and are used for both digital input and digital output . For example, they can be used to press a button and turn on an LED , respectively. This means that digital pins are used for pressing buttons or for devices that send and/or receive digital information . These pins are numbered from 0 to 13.
Analog pins
These pins correspond to the area of pins in the "analog" section and, thanks to this, are capable of detecting analog signals (temperature or light, for example). To do this, they have an operating voltage range that fluctuates between 0 and 5 volts . Consequently, analog pins are pins that can read the signal from an analog sensor and transform it into a digital value that can be displayed . This means that, through analog pins, it is possible to measure things in the real world.
Sensor power pins
They provide a 6-12 volt power supply that goes directly to the voltage regulator. These pins can also be used to power the Arduino with batteries . However, this method lacks polarity protection and overcurrent protection.
PWM pins
These are specific pins that function as normal digital pins and can also be used for Pulse Width Modulation , or PWM . Physically, these pins are distinguished by a tilde (~) next to some of the digital pins, such as 3, 5, 6, 9, 10, and 11.
Pin AREF
It's a single pin that, most of the time, can be left alone in place. Basically, it refers to an element that provides analog reference support and is sometimes used to establish an external reference voltage between 0 and 5 volts. This voltage acts as the upper limit for the analog input pins.
GND pin
On an Arduino board , there are always several GND pins , and any of them can be used to connect the circuit to ground . Hence its name, which is short for "ground ." To locate it, it's right next to the AREF pin.
reset button
This refers to the reset button, which is directly connected to pin one of the microcontroller . This pin is commonly known as "Clear" or "Master Clear ." Pressing this button temporarily connects the reset pin to ground, allowing you to reset any code uploaded to the Arduino board.
It should be noted that this requires 5 volts to run the program, while the button interrupts the voltage to 0 volts to stop the same program that Arduino is running , in order to start it again.
USB Port
This component, also known as the "USB Connector ," allows you to connect the Arduino board to a computer. This enables you to upload the required code and power the board correctly.
USB control
Essentially, USB control involves a moderator that operates between the microcontroller and the software . Therefore, it focuses on converting the information transmitted by the microcontroller into data that is sent to the device being used.
Power connector
As its name suggests, this component provides the ability to power the board with a DC voltage of 7 to 12 volts. Note that the power LED indicator should light up every time the Arduino board is connected to a power outlet . If it doesn't, something is likely malfunctioning.
Voltage regulator
On an Arduino board, the voltage regulator controls the amount of voltage applied to the board . Essentially, it acts as a safety mechanism, preventing excess voltage from entering and potentially damaging the circuit. This voltage regulator typically provides a stable 5-volt output, independent of the input voltage.
Serial Reception (RX) and Transmission (TX)
These are a type of marker used in electronics to indicate the pins responsible for serial communication . Consequently, this component of the Arduino Uno board visually indicates when the board is receiving or transmitting data. This transmission occurs via pins Zero and One.
Crystal
Specifically, this component has the ability to set the operating pulse or timing for the microcontroller so that it functions correctly on an Arduino board. Thus, a crystal is a type of electronic oscillator circuit that creates an electrical signal with a precise frequency to control the exact operating time.
List of the best Arduino kits to create your first Open Source projects
To build circuits with Arduino, you need an Arduino kit, which will allow you to create your projects more effectively . With all the necessary materials, this kit will significantly accelerate your learning process and let you experiment with all kinds of components.
Currently, there are numerous kits of this type available on the market, and several of them are very well positioned in terms of sales figures . Therefore, you can build your first Open Source projects with the help of an Arduino kit.
Below, we will introduce you to 5 of the best models available today, outlining their main features:
Elegoo MEGA 2560
First, we have this fairly comprehensive kit for hobbyists, which includes a GY-61 sensor, works with the LCD1602 module, and is made up of more than 200 components . This allows it to perform all kinds of tests and makes it suitable for dozens of different types of projects.
In this regard, it boasts impressive tools such as a stepper motor for practicing moving different parts, an ultrasonic sensor for measuring distances and detecting movement , a small fan for testing power transmission, a total of 25 multi-colored LED bulbs , and more.
Therefore, to get started practically from scratch, it's advisable to use this Arduino kit. Thanks to its vast number of components and variety of accessories, it offers users the freedom to create all kinds of projects and unleash their imagination . However, unfortunately, it doesn't have a built-in gyroscope for running projects that require directional knowledge.
XCSOURCE Arduino TE167
This kit offers over 100 pieces and includes various accessories to facilitate the development of diverse projects. Therefore, it's suitable for both beginners with basic knowledge and intermediate users, bridging the gap between beginner and expert levels.
Now, considering its most striking components, it's worth noting that the XCSOURCE Arduino TE167 includes a mini breadboard, a prototype shield, sensors, pushbuttons, resistors, segmented displays, jumper wires, and many other components that are assembled to create a truly technical final product. Among other features, it comes with a box for storing all the components for easy transport, although it doesn't include a carrying case.
Furthermore, among its main advantages, we note that it is suitable for beginners who want to learn more about an Arduino board and, in addition, it stimulates their creativity thanks to the number of tools it provides (15 LEDs, 8 pushbuttons, flame, tilt, and temperature sensors, etc.). However, it does not include an instruction manual explaining how to use it correctly.
Arduino Starter Kits
This Arduino kit is a great option for beginners . It's considered one of the most basic kits because it only allows you to develop 15 projects with the help of a manual that provides clear and practical explanations to facilitate the design process. Since it's ideal for beginners, it doesn't require soldering in most cases, which is a significant advantage for users.
It also includes components that offer various types of accessories essential for completing any project from scratch, such as: mounting bases, prototyping boards, pushbuttons, sensors, jumper wires, potentiometers, resistors, and diodes . Thanks to this, not many extra parts are needed to obtain an effective final project.
Now, regarding its main benefits, it 's suitable for all ages (between 9 and 99 years old) , and it comes with a 170-page manual detailing the projects that can be done with this kit. In addition, it allows you to control the physical world using sensors and actuators by utilizing all the included components. Furthermore, the kit supports a 9-volt battery and can therefore power independently designed projects.
Elegoo MEGA 2560 NANO
This Arduino kit offers a total of 300 pieces , making it a very complete solution. Furthermore, it stands out from the rest by offering an excellent quality-to-price ratio because, despite including so many components, it is one of the most affordable kits available on the market. This particular model costs only 20 euros.
Among other details, the Elegoo MEGA 2560 NANO is an Arduino kit that has been recommended by numerous experts, thanks to its ability to provide a suitable introduction to the world of Arduino , and because all the included components enhance the user experience. Regarding its instructions, it's worth noting that it doesn't provide a physical manual, but it does offer a website with various informational resources to help users learn and use the kit effectively.
Among its advantages, we find that it is highly compatible , making it possible to use it with both Arduino IDE kits and starter kits without any problems. Additionally, with 300 pieces, it adapts to any type of project and doesn't require any extra components . However, the power supply does not include an adapter and it is recommended to use it with a 9V DC connector or via USB.
Kuman K4-UK
This kit provides 44 components, making it easy to develop various projects. It's considered one of the best options for users who want to quickly become familiar with the Arduino environment without needing a large number of components. Only the most strategic ones are required to achieve optimal results.
In this regard, the kit includes mini circuit boards, multi-colored LEDs, breadboards, buzzers, temperature sensors , resistors, a remote control, and more . Additionally, the package contains a CD-ROM with user manuals, tutorials, and project guides to significantly simplify the process . Furthermore, it stands out as one of the most affordable kits currently available.
Therefore, it's a good option for those who want to buy an affordable and efficient kit . One of its biggest selling points is undoubtedly its LCD screen with LED backlighting , which can display up to two lines of 16 characters. Additionally, it stands out from the rest due to its versatility , making it suitable for everyone from complete beginners with no electronics knowledge to students and engineers, given the variety of functions it offers.
Learn how to choose the best Arduino kit
To decide which is the best Arduino kit on the market , it is necessary to take into account several aspects that allow it to be rated as an optimal option, above other solutions.
Therefore, to help you select the right Arduino kit for you, we recommend considering the following parameters when making your choice:
- Number of pieces or itemsThis is the most important aspect for classifying an Arduino kit as the most competent of all. Considering that, if it has a large number of parts, It will allow you to try numerous programming methods, and this will be useful for creating various projects.Furthermore, no extra elements will need to be added.
- The types of componentsIt is essential that the Arduino kit includes the most basic elements to achieve a successful project. Whether resistors, sensors, connectors, pushbuttons, LEDs, LCD screen, etc..
- User guides or tutorialsTo make projects much easier and faster, it's very helpful if the kit provides tutorials or user manuals. Use the components in the most appropriate way and avoid errors.
- Carrying case for storing the piecesIf the kit in question includes a case or box for storing its components, it will be more convenient. This is because, in addition to keeping everything well organized, You'll be able to transport it without much effort..
