Blog about Web Programming and Electronics
The Vadnica Blog is a place where I share my experience with web programming and electronics. Here you will find articles about HTML, CSS, JavaScript, PHP and MySQL, as well as Arduino projects, Linux and news from the world of technology. I write in a simple, understandable language, so the content is accessible to both beginners and more experienced readers.
What is SQL and How a Database Works
Every modern web application, online store, or content management system (CMS) needs a place to secu...
How to Properly Power Arduino Projects
One of the most common mistakes when building electronic projects with Arduino microcontrollers is i...
How to Build Smart Garden Watering with ESP32 and WiFi
Automatic garden or houseplant watering is one of the most popular and practical projects with the E...
How to Delete Automatic Windows 11 “Backups” You Never Created
During a fresh Windows 11 installation, you may see backup options even if you never created any. Th...
How to Create a Backup in Windows 11
Windows 11 offers several ways to back up your data. The simplest and most reliable method is “File ...
Difference Between PWM and analogWrite
Arduino does not have true analog outputs. Instead, it uses PWM (Pulse Width Modulation), which crea...
How a Digital Pin Works on Arduino
Digital pins on Arduino are the basic building blocks of every project. They allow you to turn LEDs ...
RegEx Quick Course: Search & Replace on Steroids
Modern developers often find themselves needing to update code across hundreds or even thousands of ...
Everything About HTML Images: Insertion, Dimensions, and ALT Attribute Optimization
Images are a crucial element of any modern website. Not only do they enrich the text and enhance use...
Everything About HTML Links: From Basics to Advanced Tricks
The web wouldn't be what it is without hyperlinks (or simply links). Links are the building blocks t...
Complete Guide to Converting Images to AVIF with ImageMagick: From Terminal Installation to HTML Usage
In the world of web optimization, we strive for faster loading speeds, lower bandwidth usage, and su...
On-Page SEO Optimization: Proper Heading Hierarchy (H1-H6) and Essential Meta Tags
On-Page SEO represents all measures taken directly within your website to help search engines (like ...