Blinking an LED is usually the first Arduino program everyone learns. But in real Arduino projects, you rarely use just one LED. Most projects need multiple LEDs blinking at the same time, either independently or in different patterns. In this tutorial, you will learn how to blink multiple LEDs on Arduino using simple, beginner-friendly code. […]
Multiple Blinking LED on Arduino Read More »
Arduino Blink LED is the first and most important project for anyone starting with Arduino. It is often called the “Hello World” program of Arduino programming. In this tutorial, you will learn how to build a simple Arduino Blink LED circuit and write a basic Arduino program to blink an LED. This project helps beginners
Arduino Blink LED Tutorial – Circuit and Code Example Read More »
In this post, you will learn STM32 button LED bare metal programming by controlling an LED with a push button on an STM32 microcontroller. We do this without using HAL, LL, or other libraries. By working directly with hardware registers and adding software debouncing, this example shows how to manage CPU execution, system clock setup,
STM32 Button LED Bare Metal Programming with Software Debounce Read More »
This STM32 Bare-Metal LED Blink Guide demonstrates how to blink an LED using direct register access, without relying on HAL or LL libraries, to validate CPU execution, clock configuration, and GPIO control. If you are interested in a higher-level approach, I have already published a separate article on blinking an LED using STM32 HAL functions,
STM32 Bare-Metal LED Blink Guide: Blink an LED Without HAL Read More »
When you begin working with STM32 or any ARM Cortex-M microcontroller, one of the first low-level structures you encounter is the vector table, located at address 0x0000_0000 (remapped to 0x0800_0000 in Flash on STM32 devices). In most toolchains, such as IAR Embedded Workbench, Keil, or GCC, this table appears automatically, almost like magic. But in
STM32 Build Process Explained – A Practical Guide for Firmware Engineers Read More »
Resistors are one of the most common components in electronics. But reading the value printed on a resistor, especially those tiny color bands, can be confusing for beginners. That is why electronic designers use color code charts or online resistor calculators to decode resistor values quickly. In this article, you will learn: ✔ What resistor
Resistor Color Code Calculator and Chart— 3 Band, 4 Band, 5 Band, or 6 Band Resistors Read More »
In electronics, whether you are designing a PCB, writing firmware for a microcontroller, or troubleshooting power issues, resistors are everywhere. Among them, pull-up resistors are one of the most common passive components. They may look simple, but they play a critical role in how signals behave, how stable your circuit is, and even how safely
Pull-Up Resistor: How It Works and Choosing a Value Read More »
In this article, I will introduce you to one of the most fundamental components in electronics that is the resistor. Resistors are essential building blocks in almost every electronic circuit. You cannot imagine any electronic device that does not use resistors. Their primary job is to control the flow of current, protect sensitive components, and
What Is a Resistor and What Does It Do? Read More »
Many beginners in electronics think that current decreases after passing through a resistor. At first glance, it sounds logical, after all, a resistor “resists” current, right? But here is the truth: the current before and after the resistor is exactly the same. Let’s break this misconception with a simple real-world example and an analogy that
Does the Current Change After a Resistor? Read More »
If you ask me what the most underrated but essential part of electronics is, I will not say microcontrollers, transistors, or op-amps. I will say the simple resistor. Especially the current limiting resistor, a tiny component that silently protects circuits that could cost thousands of dollars. In my experience, I have seen many complex systems
Current Limiting Resistor Read More »