I am making a proof of concept work for my studies. I was looking forward in using a 16x2 lcd, an SD card, and a 4x4 keypad and some other components tha only use 1 input such as (125khz rfid, and a buzzer). I have some doubt regarding if the inputs for LCD SD and keypad will be enough. I have us…

UNO: Sd + LCD + 4x4 Keypad + others

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