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Failed to open a connection at serial port COM3. Make sure the port or address is correct and the Arduino hardware is properly plugged in. For troubleshooting, see Arduino Hardware Troubleshooting.

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yousif saffa
yousif saffa il 4 Feb 2019
Commentato: yousif saffa il 4 Feb 2019
Failed to open a connection at serial port COM3. Make sure
the port or address is correct and the Arduino hardware is
properly plugged in. For troubleshooting, see Arduino
Hardware Troubleshooting.
i get this problem when i connect my arduino Mega into the pc and follow the steps yet it stills tells me it is not connected

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