Talking about Microcontroller here focus on IC Atmega328 , popular IC that use for arduino Uno board. any different board please refer ArduinoIDE compatibility Board. Lets Learn about programing in C language generally and especially arduino sketch code and libraries.
i want build this shikled just download this link and learn it https://github.com/adamples/VU_meter/?fbclid=IwAR018txPgcpptsRaItgfOlIZX0xeaCQPMldMe-AZjyHsaK7Jzr4gnayJyjQ
