سلام
برنامه ای که گذاشتید این ارور رو میده :
Arduino: 1.6.0 (Windows 7), Board: "Arduino Uno"

aa.ino:2:13: error: 'serial' was not declared in this scope
aa.ino: In function 'void setup()':
aa.ino:5:2: error: 'serial' was not declared in this scope
aa.ino: In function 'void loop()':
aa.ino:11:5: error: 'serial' was not declared in this scope
Error compiling.

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