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 »
Have you ever wanted to make your own electronic circuit but felt confused by all those wires, soldering irons, and complex circuit diagrams? Good news — you don’t need to solder anything to start learning electronics! All you need is a breadboard — a simple tool that lets you build and test circuits easily, without
How To Use A Breadboard – The Beginner’s Guide Read More »
The 7805-voltage regulator has been the silent hero behind countless reliable electronic designs for decades. Despite today’s advanced switching regulators and low-dropout designs, the 7805 remains a benchmark of simplicity, stability, and durability. In this blog post, we will explore how the 7805-voltage regulator works, the real-world issues engineers often encounter, and some field-proven solutions that
7805 Voltage Regulator IC Pinout, Circuit, and Applications Read More »
Reset is one of the most important features in any microcontroller. It makes sure the device always starts in a known, stable state, no matter what happens during power-up, power-down, or unexpected faults. In the STM32 microcontroller family, the RCC (Reset and Clock Control) module is responsible not only for managing clock sources but also
STM32 RCC Reset Domains: System, Power & Backup Explained Read More »
Clock configuration is one of the most critical aspects of any firmware design. A stable and well-optimized clock tree ensures accurate timing, reliable peripheral communication, and consistent real-time performance across the system. In embedded systems, clock instability can directly lead to system failure. In this article, I will explain the clock system and its configuration
STM32 Clock Configuration Guide: Understanding the Clock System Step-by-Step Read More »
In electronics, timing and frequency are the heartbeat of every system. From microcontrollers to communication radios, almost every device relies on a stable and precise clock signal. One of the key components that help generate and control these signals is the Voltage Controlled Oscillator (VCO). In this blog post, I will explain the working
Understanding Voltage Controlled Oscillator Read More »
Function pointers are one of the most powerful yet misunderstood features in C especially in embedded firmware where performance, memory layout, and safety matter. A function pointer holds the address of executable code and behaves like an ordinary pointer, except that it points to the program code region (Flash/ROM) instead of data memory (RAM). Let’
Function Pointer Memory Model in Embedded C Read More »