https://www.hackster.io/mircemk/diy-arduino-vfd-display-20x2-vu-volume-unit-meter-37898f
DIY Arduino VFD display 20x2 VU (Volume Unit) Meter - Hackster.io
How to make a VU meter with 38 bars per channel on a modified 20x2 VFD display. Find this and other hardware projects on Hackster.io.
volume unit metervfd displaydiyarduino20x2