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I am uncertain what a serial monitor does when I try uploading blink. I get:

problem uploading to board avrdude stk500_recv910 programmer is not responding
  • Sorry, that has to be a typo: programmer is you? – mico Mar 11 '17 at 15:41
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    You are correct: this is a real message. It means you have misswired your serial lines. – mico Mar 11 '17 at 15:46
  • Actually it can be any serial port error. – mico Mar 11 '17 at 15:49
  • Blink uploads easily, so we'll need more information - Are you using a USB serial cable, for instance? Have you selected the correct board and port? – SDsolar Jul 21 '17 at 8:18
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You have probably not chosen the right COM port. Try picking a different COM port, if using USB cable.

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    This answer is rather terse and would have probably been better as a comment. If you could expand your answer, maybe explaining where to change the COM pot and a screenshot, that would be great. – Greenonline May 22 '17 at 2:37

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