@startuml
title Diagrama Block a proiectului

[butoane] as butoane
[ATMega328P] as mcu
[sursa alimentare] as power
[LCD] as lcd
[level shifter] as ls

butoane--> mcu: GPIO
power --> mcu : 5V
mcu --> ls: 5V SPI
ls --> lcd: 3V3

@enduml