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Author Topic: COM3 error  (Read 1037 times)
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Hi,
I have a Mega 2560 and when ever I try to download a file it says "serial port 'COM3' not found". Whats my problem I have the right board selected and I think the right programmer.
Thanks
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What operating system type and version?
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Windows 7 home premium, 64 bit.
Thanks for the reply smiley
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A life? Where can I download one of those?
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I also have these problems with Win7 x64.  I have to actually restart my computer for it to recognize it again...
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I'm having the same issues with win7/x64, but for me it works just unplugging and plugging back in.

Happens every other time I plug the Arduino in. (Arduino Uno)
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Yayaya it is working
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actually it seems to vary with what USB port i'm using how often this occurs.
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