Arduino

Overview of the Arduino Electronics Platform Arduino, a groundbreaking technology in the amateur electronics ecosystem, has revolutionized the way people learn and interact with electronics. Unlike traditional electronics studies, Arduino brought fun and ease to the learning process, making it accessible to beginners. This Italian-born marvel has created an entire industry and movement, known as the makers movement. By being a completely open-source platform, Arduino has gained immense popularity, allowing individuals and companies to build their own Arduino clones and contribute to its ever-growing ecosystem....

In this Arduino project, we will learn how to control a servo motor using a potentiometer. By reading the rotation of the potentiometer through an analog input pin, we can obtain values ranging from 0 to 1023. We will utilize these values to rotate the servo motor from 0° to 180°. First, let’s build the circuit and then proceed to write the program. Connect the power pins (5V and GND) to the + and - breadboard lines, as shown in the image below....

In this Arduino project, we will be using a passive buzzer to generate sound. Similar to the active buzzer example, you will need to connect the buzzer to the Arduino. The buzzer has a positive “+” pole, which can be connected using a red wire (a good habit to follow). Connect the negative “-” wire to the GND on the Arduino and the “+” wire to a digital output pin. In this case, we will be using pin #8....

When working with analog input pins on an Arduino, the acquired values are typically in the range of 0 to 1023. This is because the analog read resolution is 10 bits, resulting in a range of 2^10, which is 1024. However, on certain ARM-based Arduino devices such as Arduino Zero, Arduino Due, and the Arduino MKR family, it is possible to extend the resolution to 12 bits by calling the analogReadResolution(12) function....

The tone() function in Arduino is a useful tool for playing notes on passive buzzers. By combining multiple calls to the tone() function, we can create melodies and play songs. To use the tone() function, follow this syntax: tone(<PIN>, <FREQUENCY>) For example, to play the C7 note on a buzzer connected to pin 8, use the following code: #define NOTE_C7 2093 tone(8, NOTE_C7) Please note that frequency is measured in hertz (Hz)....

As developers, we often find ourselves solving similar problems time and time again. Luckily, we have discovered a way to make our lives easier through the use of libraries. These libraries contain pre-written code that can be reused and shared among developers, allowing us to save time and effort in our programming tasks. Arduino, a popular platform for building electronic projects, also offers a wide range of libraries that can enhance our projects....

In my electronics tutorials, I often use a 9V battery to power the circuits. While it’s simple and easily accessible, it’s not the most efficient option. The battery tends to drain over time, resulting in a voltage lower than the advertised 9V. To overcome this issue and enhance the performance of your circuits, I recommend using a Breadboard Power Supply Module. This module allows you to input power from various sources, including a battery, a 12V adapter, or any other compatible source....

Buzzers are electronic components that are used to generate sound. In this blog, we will explore the different types of buzzers and their functionalities. Active Buzzers Active buzzers are a type of buzzer that have additional logic compared to passive buzzers. They require a direct current (DC) connection and are more expensive than passive buzzers. To generate sound with an active buzzer, you need to connect a 0V wire and a signal wire, alternately switching between high and low voltage levels at different frequencies based on the desired sound....

Servo motors are programmable motors that have the ability to rotate to positions spanning over 180 degrees. These motors are commonly used in various applications that require movement and come in different sizes. For Arduino and battery-powered applications, the micro servo or RC servo is often used. Examples include the SG90 and the MG90S. Both of these servos function in the same manner. A mechanical arm can utilize multiple MG90S servos, as shown in the image below:...

The 1602 LCD display is a widely used alphanumeric display that consists of two lines, each capable of displaying 16 characters. Its versatility makes it suitable for various applications, including vending machines and train stations. While it is commonly included in Arduino kits, the instructions provided here can be applied to any LCD display that has a 16-pin interface compatible with the Hitachi HD44780 LCD controller. To control the display, the LiquidCrystal Arduino library emulates the Hitachi HD44780 LCD controller....