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Author Topic: Problem uploading sketch to arduino mega 2560  (Read 446 times)
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Hi,

I just bought an arduino mega 2560 recently. Previously it is working fine until today when I want to change the code and upload it again it takes forever.

i have check the setting for the board and the port. I even redownload the arduino 1.0 program. Yet, it is still the same.

Can kindly help me in this problem?

Please advice.

Thanks,

Xinyi
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Massachusetts, USA
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The bootloader of some Mega's has a 'monitor' program that lets you read and write memory from the Serial Monitor.  The monitor program is activated by sending '!!!'.  Unfortunately that means that any sketch containing three or more consecutive '!' characters will fail to upload.  smiley-sad
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