I have found many examples about pull up circuit but I did not understand how much the value of resistance do I need? 4.7k or 20 do I need to connect them to vcc than to 5V (Arduino)?
I have found many examples about pull up circuit but I did not understand how much the value of resistance do I need? 4.7k or 20 do I need to connect them to vcc than to 5V (Arduino)?