Software
Introduction If you’ve ever used apps like WhatsApp, Slack, or Google Docs, you’ve experienced real-time data in action — messages appear instantly, updates sync automatically, and everything feels seamless. Behind many such systems lies GraphQL, a modern way to handle APIs, and services like AWS AppSync that bring it
Hardware
Early in my career, I designed a circuit board that worked perfectly on my desk. But the moment we put it in a metal enclosure for testing, everything went haywire. Random resets. Glitchy behavior. Failed emissions testing. The culprit? Electromagnetic Interference (EMI) – and a layout that ignored some fundamental rules.
Firmware
That ESP32-S3 prototype working perfectly on your desk? It'll brick itself in production. Here's the brutal checklist that separates hobbyists from engineers shipping real products. The Reality Check Nobody Talks About You've built something magical. Your ESP32-S3 prototype streams 9-axis IMU data flawlessly. The