[type or paste code here](//www.elegoo.com)
Hi. I try to learn how to use Arduino LCD and type hello word by use library programming code and 2 risitors as I don't have potentiometer 10. But nothing appear in my screen i don't know what wrong in my working
Did you forget something ?
Do you have a feeling that may be your problem? It is in the circuit for a reason, it controls contrast which currently you have none. Put the pot in and try again.
Read Paul's explanation of why we can install a 330 to 470 ohm resistor from Vo to ground. No pot required. A 470 has always worked for me in a moderate room temperature environment.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.
