In the previous post, we learned how to control an LED using a push button and an Arduino. Now, let’s take the next step by building a simple yet practical Arduino project that uses a push button to control a relay. Relays allow low-voltage microcontrollers like Arduino to safely control high-voltage or high-current devices such […]
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In the previous post, we learned how to blink an LED using an Arduino. Now, we are taking the next step by building a simple and interactive Arduino project. In this project, we will control an LED using a push button. It helps you understand how to work with digital inputs (push buttons) and digital
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In this “Arduino traffic light project”, you will design and implement a working traffic light system using LEDs and Arduino code. In this project, you will learn how Arduino digital pins operate, how to control output devices, and how to write a non-blocking code, and how to write timing logic that mimics real-world traffic signal
Arduino traffic light Read More »
“If you have ever tried to blink multiple LEDs at different speeds using Arduino and wondered why your board behaves strangely, then believe me this blog post is for you.” Blinking multiple LEDs at different speeds using Arduino board is a very common requirement once you move beyond a basic project. When I was learning
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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.
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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 »