Hi again!
Another error:
HelloKeypad:17: error: 'Keypad' does not name a type
HelloKeypad.cpp: In function 'void loop()':
HelloKeypad:29: error: 'kpd' was not declared in this scope
In the code, "Keypad" is not colored in orange. Is this the problem?
Sorry if this is a stupid question... i started with arduino a few days ago...