How I Built a Simple Battery Charger at Home!

⚡ Never struggle with battery Charging again! I built a versatile Li-ion battery charger with a visual 10-LED fuel gauge! In this video, I take you through the entire process: from PCB design and assembly to troubleshooting a classic LM3914 scaling mistake. You'll see the full journey of creating this practical circuit, powered by Altium Develop the professional-grade, browser-based PCB design tool that makes complex projects accessible. You'll learn how to: 1️⃣ How to Design a Complete Battery Management System 2️⃣ Master the LM3914 Bar Graph Display Driver 3️⃣ Professional PCB Design & Assembly Workflow 4️⃣ Critical Debugging & Troubleshooting Techniques 5️⃣ How to Perform a Circuit Rework ________________________________________________________________________ 🛠️ TOOLS I USED Visit Altium Develop : Design your own PCBs → https://www.altium.com/yt/diyguychris JLCPCB (Discount): Order purple PCBs for $2 → https://jlcpcb.com/?from=TIP Online Altium Project Files : Access here → https://diy-guy-chris.365.altium.com/... ________________________________________________________________________ 📁 PROJECT FILES Check full GitHub repo : https://github.com/BEEMB/Simple-Batte... Circuit Schematic : https://github.com/BEEMB/Simple-Batte... JLCPCB-optimized Gerbers : https://github.com/BEEMB/Simple-Batte... BOM File : https://github.com/BEEMB/Simple-Batte... Pick-and-Place files : https://github.com/BEEMB/Simple-Batte... 3D Assembly aid model : https://github.com/BEEMB/Simple-Batte... ________________________________________________________________________ 🔧 BUILD ESSENTIALS PCB Assembly: Purple PCB from JLCPCB 💧 Solder Paste: https://www.amazon.com/Chip-Quik-TS39... 💧 Flux cleaner : https://www.amazon.com/Chemtronics-Fl... 🔥 Hotplate MHP50 : https://amzn.to/4koSjR5 🔥 Soldering station : https://amzn.to/43He33k 🎯 Precision Tweezers : https://amzn.to/3StKe1b Debugging Tools: 🔎 Digital microscope Camera : https://amzn.to/3ZH3En2 🔌Digital Multimeter : https://amzn.to/4dShpFp ________________________________________________________________________ ⏱️ CHAPTERS 0:00 – Project intro 0:44 – Circuit fundamentals 2:16 – Circuit Schematic Altium Develop 4:25 – PCB Ordering & Unboxing 5:31 – PCB Assembly (Bottom side) 6:54 – PCB Assembly (Top side) 7:51 – First test 8:44 – Debugging 11:22 – Final test ________________________________________________________________________ 🔗 MORE PROJECTS Check my Battery Health Monitor video:    • Build This DIY Lithium Battery Health Moni...   ________________________________________________________________________ ★☆★ 💻 FOLLOW ME BELOW 💻 ★☆★ Instructables: http://www.instructables.com/member/M... Hackaday : https://hackaday.io/MegaDAS Facebook : https://www.facebook.com/MEG.DAS1/?fr... Twitter :   / megadas1   Hackster : https://www.hackster.io/mega-das #diy #battery #charger