USB controlled RGB LED VU Meter PWM circuit 3 TLC5940 and one in 16 5mm RGB LED PIC18F2550 is being used. PC (Visual Studio C #) and microcontroller (Microchip pic c) have the source code of the software. USB... Electronics Projects, RGB VU Meter LED Circuit USB PWM PIC18F2550 TLC5940 "led projects, microchip projects, microcontroller projects, pic18f2550 projects, " Date 2019/08/02