The Arduino then measures the voltage on those inputs and feeds the necessary commands to the PT6314 driver to update the display. The resulting VU meter has 38 bars per channel, and is highly ...

For his latest project, [XTronical] has recreated the classic displays from Dr McCoy’s sickbay with an Arduino Nano and a 2.8 inch LCD display. It even has a speaker and MP3 player module to ...