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Author Topic: L LED on AT MEGA 2560 Blinking alot  (Read 1672 times)
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St. Lucia, West Indies
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Just got my new ATmega 2560 today. Uploaded a code and then the L led started to blink alot. What is wrong? Can it be fixed or do i have to get a new one?
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The L LED is connected to a pin on your Arduino. I'm not 100% sure if it's the same as the smaller ones (I have an Uno), but on mine it's connected to pin 13. When you first get your Arduino, a blink program is already on the ROM (again, it's this way for the UNO).

When I got mine I spent a week or so trying to figure out why all of my programs were just blinking LEDs only to find out that I never changed which Arduino I was trying to upload to, so the program never went. If the program you're trying to upload isn't actually writing to a pin (possibly the LED pin, as mentioned), then you might have forgotten to change which Arduino you're uploading to.
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