SurferTim:
SurferTim:
The Mega2560 has problems when powered by the Vin (barrel jack) and the usb simultaneously. If you had your Mega connected to usb and external power applied to Vin, it could have damaged the board.I usually don't quote myself, but I do not see this as "WARNING DANGER DANGER". I always like your input tho. Sometimes in my haste, I forget a detail that could be important.
Yes I do go over the top sometimes, I'm sorry, but it's not my fault really, I just sometimes frizzle at the warnings and cautions given out to beginners here sometimes that are not fact based. They have enough on their plates as it is learning to use their arduino board properly and learning the electronics they need to so as to not cause self inflicted damage.
I have no negative issues with you, just with the statement you made this one time. 
Lefty