whenever i program my arduino uno, if i unplug in and re-plug, the last program i uploaded doesnt work, i always need to re-program it.
I saw this link with some solutions: http://arduino.cc/blog/2011/01/20/issues-with-the-new-arduino-uno-smd-edition/
But all solution i need to spent money, that is not nice. Anyone knows a way to solve this problem without spending money??