Introduction: DIY LM3914N VU Meter

Part of learning about electronics is just messing around with LED blinkies - lights make everything better!  Well, the LM3914N is a led bar driver, that is, it can, with some power, light up a bunch of LEDs at once in response to a signal.  In this case, VU meters respond to audio signals and essentially shows the volume as a function of voltage.

This video shows how to set one up, and some of the troubleshooting I had to use to get it working the way I wanted it to!

Comments

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joshr123 (author)2013-11-14

Bring on the schematics

author
Tymkrs (author)joshr1232013-11-15

It's actually the schematic from the datasheet :)

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