TL;DR
Alex created an innovative electronic business card that visualizes audio, turning a typically mundane item into something eye-catching and functional. The card features an onboard microphone that captures audio, displaying real-time frequency levels across an 8x5 grid of RGB LEDs. Alongside the audio visualization, Alex's contact information, including QR codes for his LinkedIn and portfolio, is printed directly on the card.
Why This Was Curated
This article presents a creative project that combines software and hardware, making it highly relevant for software developers interested in embedded systems. It is accessible and showcases practical applications of the ESP32, encouraging tinkering and customization, which enhances its actionability.