Reactive LEDs

July 19, 2021

Simple reactive LED project. It reacts based on the loudness(decibels) and freqency of sound played. Did not really keep a hosted repo of the source code but this is generally a simple project. A difference worth noting in my approach is that i did not really use a microphone to capture sound, but instead created a virtual audio loopback driver on my Mac. This was done using blackhole.

You can then use the Audio MIDI Setup tools on Mac to create an agregate device that routes sound to both you regular speaks, and the virtual driver.

The output from this can then be routed back to your input monitor. I initially did this directly over usb, but later adapted to work over wifi using an ESP32 microcontroller.