ESP32-S3 Autonomes Webradio: Teardown & Deep Dive (mmWave Radar, NFC & Web-UI) | v0.9.5.5

Welcome to Brunvi Lab! In this detailed deep dive, I will show you the current development status (v0.9.5.5) of my standalone ESP32-S3 web radio. The goal was a completely autonomous device for my local network – with zero cloud dependence, no manufacturer apps, and absolutely no physical buttons on the case. Key features at a glance: mmWave Radar (LD2410) for automatic presence-based fade-in (near & far gates) NFC Tap-to-Connect to instantly launch the custom Web UI on your phone 100% offline, local voice control directly on the chip Custom Web UI featuring an animated sonar canvas, global station search, and equalizer ⚠️ AUDIO & DIY EXPERTS – I NEED YOUR ADVICE: The current prototype runs a PCM5102 DAC and a small 3W amplifier (MAX98306) powering a Visaton driver. The system is rock-solid, but the acoustic performance is simply too flat for my taste. I just started designing Revision 2 using a powerful TAS5825 Smart Amp to bring high-end sound and full DSP access to the board. Which 2.5" or 3" speaker driver with decent excursion (Xmax) and serious bass potential would you recommend for such a small, stiff enclosure? Let me know in the comments! If you want to follow the chaotic journey from the breadboard to the finished device as a weekly vlog series in the future (including SMD soldering in a pizza oven and days of troubleshooting) – hit subscribe and drop a comment! (Note: The audio explanation in the video is in German, but English auto-translated subtitles are fully active and working!)