Hi everyone, I'm a beginner code writer, I want to do an automatic irrigation project. But I have a problem. I wrote basic code and run but on the serial monitor appeared question marks, ı didnt understand(baud numbers same). [20240820_230341]

Arduino Serial monitor

camsysca August 20, 2024, 10:54pm 4

Try that again.
In code tags, please. Haven't you read:

Topic		Replies	Views
my serial monitor doesn't work any ideas?? Programming Questions	4	473	May 5, 2021
Squares in Serial Monitor Programming Questions	14	398	June 14, 2024
Serial monitor display problems Programming Questions	5	604	May 5, 2021
Serial monitor keeps printing "14" Programming Questions	25	2950	May 5, 2021
Help With Serial Monitor Programming Questions	5	1088	May 5, 2021