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Running PHP8.3 with Nginx on Ubuntu

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PHP is a scripting language widely used for web development, with code processed on a web server through a PHP interpreter, implemented as a module, daemon, or CGI executable. Nginx lacks the default ability to handle dynamic web pages with PHP and requires specific additional plugins for this purpose. One such plugin is FPM (FastCGI Process Manager), an alternative PHP FastCGI implementation offering additional features, particularly advantageous for high-traffic sites. FPM stands out as the preferred method for PHP page processing with Nginx, surpassing traditional CGI-based methods in terms of speed.

Play The Simpsons theme song with Arduino and a buzzer

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The Simpsons, that legendary animated series we all know and love, has become a cultural phenomenon. With its hilarious take on family life in Springfield, it's an absolute classic. We decided to have a bit of fun and recreate the show's iconic theme song using a piezo buzzer.

Buzzer is used to generate sound, beep or even melody of a song. It can be found in alarm devices, computers, timers and confirmation of user input such as a mouse click or keystroke. A piezo buzzer is not like a regular speaker that you might think of. It uses a material that actually changes shape when you apply electricity to it which in turn creates noise. The faster you bend the material, the higher the pitch of the noise that is produced.

What's new in PHP 8.3

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PHP 8.3 was released as scheduled on November 23, introducing numerous new features and improvements since the PHP 8.2 release. We'll go through most important features, performance improvements, changes and deprecations one by one.

PHP 8.3 and subsequent versions now enable the declaration of types for PHP class constants. This guarantees type compatibility for constants when overridden by child classes and interface implementations. Before PHP 8.3, there was no way to enforce type compatibility programmatically.

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How to use a buzzer with Arduino

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A piezo buzzer is a small device that converts electrical signals into sound waves. Unlike traditional speakers, piezo buzzers operate on the piezoelectric effect. When a voltage is applied, the buzzer's piezoelectric crystal deforms, producing sound waves. This simplicity makes piezo buzzers cost-effective, lightweight, and ideal for applications where the space is limited.

Merry Christmas and a Happy New Year!

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Wishing you a festive Christmas filled with warmth, laughter, and the company of loved ones. May the spirit of the season bring peace and happiness to your heart. As the year concludes, welcome the promise of a fresh start and a new chapter in the coming year. May the New Year be adorned with success, good health, and countless moments of happiness. Merry Christmas and a Happy New Year to you and your loved ones!

How to install Apache Kafka

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Apache Kafka, a distributed streaming platform, has emerged as a cornerstone for managing real-time data feeds and streaming applications. At its core, Kafka efficiently handles the flow of information between applications in real-time. Its strength lies in managing large streams of data, ensuring the integrity of information throughout the process. In this article, we will explore into the fundamental aspects of Kafka and provide a step-by-step guide on how to install it on your system.

Secure File Transfers with SCP

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Secure Copy Protocol, also known as SCP, stands out as a robust yet straightforward solution for securely transferring files between local and remote systems. Let's explore this essential command and understand how it simplifies your file transfer needs without unnecessary complexity.

At its core, SCP is a command-line utility crafted to securely copy files and directories between hosts over an SSH (Secure Shell) connection. What makes SCP particularly handy is its simplicity. With just a single command, you can swiftly move files from your local machine to a remote server or vice versa, all while ensuring the confidentiality and integrity of your data.

Integrating membrane keypad with Arduino

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In the world of DIY electronics, Arduino stands as a go-to tool for creators and hobbyists. Today, we're exploring the integration of a 4x4 membrane keypad module with an Arduino, a combination that introduces an interactive layer to your electronic projects.

Improved GeoDetect featuring flag recognition

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Collecting and analyzing data on users' geographical locations has become increasingly essential for various applications. Precise geolocation data has the potential to significantly enhance the user experience by personalizing content, customizing marketing strategies, and implementing features specific to regions. Back in May, we introduced the GeoDetect package to facilitate this process.

DIY - Automated plants watering system: concept

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In the world of do-it-yourself (DIY) projects, few activities match the practicality of constructing your own Arduino-powered automatic watering system. Imagine a setup where technology integrates effortlessly with nature, allowing you to take control of your plant care routine. We'll break down the fundamental components of this project, highlighting the vital role of the DS1302 timekeeping module and Arduino-compatible pumps. Get ready for a hands-on approach that not only enhances your technical skills but also transforms the way you care for your plants, whether they are in the corners of your home or under the open sky.



Playing popular songs with Arduino and a buzzer

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HiBit

Dr. Dre ft Snoop Dogg - Still D.R.E. has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

It's not possible to make a direct MP3 to buzzer decoder because a buzzer (especially a typical piezo buzzer) can only produce simple tones at specific frequencies, not complex audio like speech or music. MP3 files contain compressed, multi-frequency audio data far beyond what a buzzer can reproduce. At best, you could extract a basic melody or rhythm if the MP3 is extremely simple (like single-tone music), but decoding full MP3 audio into something a buzzer can play accurately isn't feasible.

Playing popular songs with Arduino and a buzzer

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HiBit

Jujutsu Kaisen - Specialz has been added.

Enjoy!

Complementary filter and relative orientation with MPU6050

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HiBit

Thank you, very appreciated!

The issue is likely that the MPU6050 isn't properly initialized after power-up. Make sure the setup() function runs completely each time the device is powered on, and consider adding a small delay before using the sensor.

Playing popular songs with Arduino and a buzzer

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HiBit

Yung Kai - Blue has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

First day out has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

Vanilla Ice - Ice ice baby has been added.

Enjoy!

Getting real-time position using MPU9250

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HiBit

We used an existing library for this. You can see how it was implemented in the code snippet above.

It is also accessible in our GitHub repository.

Reading MPU9250 sensors with Arduino

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HiBit

The article Getting Real-Time Position Using MPU9250 explains how to calculate real-time position using sensor data.

Complementary filter and relative orientation with MPU9250

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HiBit

You can learn how we calculate pitch and roll using a complementary filter in this project; the file is available on GitHub.

Playing popular songs with Arduino and a buzzer

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HiBit

Assassin's Creed 2 - Ezio's Family has been added!

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

Livin' on a prayer has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

Crystal Castles Kerosene has been added.

Enjoy!

How to use the NRF24L01 module with Arduino

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HiBit

The D10 pin has a specific function; it must be set as an output for the Arduino to operate as the master in an SPI communication protocol. In the provided wiring and code, the pin is already functioning as an output.

How to use the NRF24L01 module with Arduino

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HiBit

I suggest verifying the wiring to confirm that all components are correctly connected, followed by re-uploading the code. The examples provided in the post have been tested and are operational. Please consider that there might be a physical problem, such as a damaged or defective module.

Playing popular songs with Arduino and a buzzer

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HiBit

Coldplay - Hymn for the weekend has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

Was wollen wir trinken has been added.

Enjoy!

Playing popular songs with Arduino and a buzzer

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HiBit

The board has built-in memory. If additional memory is needed, an alternative board can be used.

Playing popular songs with Arduino and a buzzer

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HiBit

The Doom melody requires more memory than others, so make sure your board can handle that amount. If not, you will usually encounter an error during compilation.

As a workaround, you can try removing some of the notes (along with their respective durations) to fit the melody on the board.

Playing popular songs with Arduino and a buzzer

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HiBit

We couldn't find notes for that song that will sound good with a buzzer.


HiBit community member since December 2020