How to do the "talking lights" of the "Night Rider"? i think the real name is "vumeter"

Well, i don't understand the diagrams, i'd like some pictures or a "step by step" guide. Sorry for my english, I'm from Argentina. Thanks in advance

Jayefuu8 years ago
Or if you don't have an arduino, there is a way to make it with integrated circuits (little black chips) and resistors and capacitors. You'd need to make an astable with a 555 timer then a circuit with some d-type latches. If you don't want to use an arduino like in Steve's answer, I could draw you up a circuit diagram for this version.
I had a very cursory look for just such a project ! You could ALSO do it with an LM3914 and a 555, or an op amp....Generate saw tooth, drive LM3914 with saw tooth.