This is an apparent bug with the Mega 2560. So far it has been found to not occur with a Duemilanove, but three different Mega 2560s have gotten it to occur. When the code contains three or more exclamations it will prevent the sketch from being able to complete uploading. Note that there is no com…

Bug with !!! Using Mega 2560

mmcp42 January 10, 2011, 10:02am 2

just tried it on a UNO
works fine
uploaded ok and serial monitor is showing

Alaarm trigger integer xxx
Incrementing integer xxx
Alarm has gone off!!!

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