An update to the VU meter now with brightness and sensitivity controls! The original video can be found here,    • Arduino sound reactive VU meter WS281...   and if you're struggling to get this to work, I recommend you watch that video first. Like in the previous video, you will need the FastLED and JC_Button libraries.

In this video I briefly explain how we can get more resolution from the ADC by using analogReference(INTERNAL). This enables the VU meter to work at much lower input levels without the hassle of adding an opamp circuit.

Code, schematic and more information can be found here: https://github.com/smarley/Nano_vu_line

Based on code originally written by CineLights
CineLights Youtube page:    / @cinelights