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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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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Why Do Phone Chargers Get Hot While Charging?

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

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