Welcome to Hobitronics

Hello! We are Hobitronics — passionate electronics enthusiasts dedicated to exploring the exciting world of technology and innovation. Whether you're just starting out or you're already a seasoned engineer, this is the place to fuel your curiosity and bring your ideas to life.


 What You'll Discover Here

  • ✅ DIY Electronics Projects

  • ✅ Insights into Digital Electronics

  • ✅ Practical insights into EDC (Electronic Devices and Circuits)

  • ✅ YouTube video demos and walkthroughs

  • ✅ Learning paths for all skill levels

Jump Into a Series

Explore our structured learning series tailored just for you:

🔰 Beginner Basics – Learn from the Ground Up

Master the core components before you dive deeper:

👉 Explore Full Basic Electronics Series »

🖥️Digital Logic Series – Build a Foundation in Digital Electronics

Great for VLSI learners and digital design enthusiasts:

👉 Explore Digital Electronics Series »

🔍 EDC Series – Electronic Devices & Circuits

Your all-in-one reference for understanding devices:

👉 Explore EDC Series »

🚀 Arduino Project PDFs

Create your own electronics magic with our handpicked project guides:

⭐ Top 5 Arduino Projects for Beginners

Perfect starting point with full circuit diagrams and code.

⚙️ Intermediate Arduino Projects

Real-world concepts like gas sensing, moisture automation, and RFID tracking.

🎥 Watch & Learn – Check Our YouTube Channel

Don’t just read — see the electronics come alive!

📺 Visit Hobitronics on YouTube »

👋 Join Our Community

At Hobitronics, we’re not just teaching. We’re building a community of creators, students, and tinkerers. Follow us, comment, and share your own innovations.
We’re excited to grow with you.

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Popular posts from this blog

Why Does My Old Phone Charge Slowly But Heat Up More?

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The Truth About Aging Batteries Welcome back to Hobitronics — where we decode the daily mysteries inside your gadgets. Today we’re getting into something everyone with a 3-year-old smartphone has asked themselves: "Why is my phone charging so slow? And why does it feel like it’s cooking itself while doing it?" You’re not imagining it. Aging phones really do charge slower and heat up more — and the reason lies deep inside the battery chemistry , internal resistance , and the invisible wear and tear of thousands of charging cycles. 1. Your Battery Ages — Even If It Looks Fine Smartphones use Li-ion or Li-Po batteries . These are fantastic when new, but over time: Electrochemical reactions degrade the anode/cathode SEI (Solid Electrolyte Interface) layer thickens Lithium plating reduces active ions Capacity drops with every charge-discharge cycle This degradation results in something very important: higher internal resistance . 2. Internal Resistance: Th...
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Controlling RGB LEDs with PWM Using Arduino

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P ulse Width Modulation (PWM) is not just a feature of microcontrollers — it’s a foundational technique in electronics. From dimming LEDs to simulating analog voltage levels, PWM is used in display systems , communication protocols , and motor drivers.  In this article, we’ll explore how PWM works technically and apply it to a fun and colorful project: controlling an RGB LED using an Arduino . Whether you’re an engineering student or a DIY hobbyist, this simple RGB LED demo will give you a hands-on feel for what PWM really means — both in concept and application. What is a Common Cathode RGB LED? An RGB LED combines three LEDs — Red, Green, and Blue — into a single package. In a common cathode RGB LED , all three internal LEDs share one ground (GND) pin. The remaining three pins individually control the red, green, and blue segments. By varying the amount of current (or rather, the voltage drop) across each color pin, you can create a wide spectrum of colors through additive...
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Why Do Phone Chargers Get Hot While Charging?

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How MOSFETs Work with Arduino: PWM Control, Applications, and Pro Tips

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If PWM is the brain signal, the MOSFET is the muscle that makes it move. From your Arduino's motor shield to your laptop charger and even your electric vehicle's inverter — MOSFETs silently power modern electronics with unmatched speed and precision. In this blog, we’ll break down how MOSFETs work, where they’re used, and how they bring digital control to life — especially when combined with PWM. In this blog, we’ll break down: What a MOSFET is How it works with PWM Real-world uses (motors, LEDs, inverters, etc.) Pro design tips for safe and effective usage 1. What is a MOSFET? MOSFET stands for Metal-Oxide-Semiconductor Field-Effect Transistor .   It’s a type of transistor widely used for switching and amplification , especially in high-speed, high-efficiency applications . Key Roles: Acts like a gate-controlled switch — voltage on the Gate decides whether current flows. Used to control large loads using small digital signals (e.g., from microcontr...
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Understanding Masking, Enabling, and Disabling of Logic Gates

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In digital electronics, logic gates are the basic building blocks of all digital systems. But did you know that we can control whether a gate actively participates in a circuit using masking , enabling , and disabling techniques? These are crucial concepts, especially when working with multiplexers , tri-state buffers , and control logic . Let’s break it down in simple terms. What is Masking in Logic Gates? Masking is a method of controlling the output of a logic gate by using a specific input value (often 0 or 1) to “mask” or block the effect of another input. It's widely used in data handling , interrupt systems , and bitwise operations . Example: AND Gate Masking Let A = input signal Let B = mask Output = A AND B If B = 1 → Output = A (no masking) If B = 0 → Output = 0 (signal is masked) Example: OR Gate Masking Let A = input signal Let B = mask Output = A OR B If B = 0 → Output = A (no masking) If B = 1 → Output = 1 (signal is masked) This is especia...
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🎧 Sampling and Quantization Explained

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Pulse Code Modulation (PCM): The Digital Backbone of Modern Communication

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