Serial Monitoting (Motor Testing)

We just built our application and when we tried to test it, it always shows a mirrored question marks “⸮”. What do you think the problem is?

Bluetooth.ino (393 Bytes)

RC.ino (1.6 KB)

Incorrect baudrate in serial monitor?

Which code gives you the problem?

Learn to post small code in the post (using code tags).