Hello I'm new here, I'm trying to build a button box and have some questions. First, can I add more button and shift regester later? I mean after I programed the button box? Secound, I found a photo from 74HC165 shif regester PCB, since I have no accses to outside of my country I must build that PCB using prototype boards. I found out that there are some resistors between input of each SR and 5v line. Is that correct? Why should use a resistor there? Third, Can I program off buttons? I mean when I press on sth happens and when I press off sth else happens
Last edited by Dovahkiin; 03/27/2106:33 PM. Reason: Adding a Picture of 74HC165 PCB
