Your Arduino is ONE MISTAKE Away from Death (Arduino Killer Revealed) 💀 Learn everything you need to know about working with relays in your electronics projects! This comprehensive tutorial covers: • How relays actually work - understanding the coil, contacts, and magnetic principles • Critical safety considerations most tutorials don't mention • Why flyback diodes are absolutely essential (and how they protect your components) • Detailed explanation of coil energy storage and voltage spikes • Step-by-step guide to connecting relays with Arduino using transistors • Real oscilloscope measurements showing relay behavior • Complete calculations for selecting the right components • Practical demonstration with actual circuits ⚠️ Make sure to understand all safety precautions before working with potentially dangerous voltages. 🔑 Key timestamps: 0:00 - Introduction 0:26 - Relay basics 1:21 - Coil energy storage explained 2:42 - Flyback diode importance 3:30 - Switching time analysis 4:30 - Arduino integration 5:45 - Component calculations 7:15 - Practical demonstration Whether you're a beginner or experienced maker, this tutorial will help you safely and effectively incorporate relays into your projects! #Electronics #Arduino #DIY #Engineering #Makers #ElectronicsBasics #Arduino Uno