Instead, he wound up assembling a custom bass reactive LED display using an ESP32. The entirety of the build is minimal, consisting of a GY-MAX4466 electret microphone module, a KY-040 encoder for ...

They’ve been working on a followup to the ESP8266. It’s the ESP32, and it’s faster, has more peripherals, better WiFi, and Bluetooth LE. Since Christmas, we’ve been ogling this chip.