Serial Monitor Values


I am new to use Arduino. Without programming the board, I just tried opening serial monitor. Garbage values were running in that. What does it mean?


It probably means your Arduino is sending data to the Serial Monitor at a different baud rate than you have selected in the Serial Monitor. The baud rate of the Serial Monitor is set in the menu on the bottom right of the window. From your screen shot I can see it is set at 9600 baud. In the sketch there will be a line:


where n is the baud rate that the serial data are sent to the Serial Monitor. You need to set the Serial Monitor to match that setting.