The vu meter circuit, which can operate peak hold and normally, has a 2×20 LED peak indicator. Leds are controlled by Atmega8 microcontroller. The display range is -34 to +4 dB. The LEDs are controlled by multiplexing 4 LEDs... Electronics Projects, Peak Hold Led Bar Vu Meter Circuit "atmega8 projects, avr project, microcontroller projects, " Date 2021/09/19