Recommended · for some experience
Make your own LED Sign VU Meter
Why people recommend it
Used as a project guide for an LED sign that reacts to music, though some builders found the wiring and the reasoning behind the op-amp stage hard to follow.
Watch for: circuit choices are not fully explained
In their words
I was trying to follow a tutorial on YouTube (The tutorial by Great Scott I tried following) but didn't know how to connect the LEDs
bob1252 on electronics.stackexchange.com, Sept 2016. CC BY-SA.
This is where i found it [video] His instructions are a bit lacking as to why he does it like this though.
Chriserke on electronics.stackexchange.com, Aug 2019. CC BY-SA.
