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By Eorsak
#192652
Whenever I try and open the serial monitor, I get the error message:
"Board at COM3 not available."

Also, when I try and upload code, I get the error message:

"Arduino: 1.8.0 (Windows 7), Board: "Arduino/Genuino Uno"

avrdude: ser_open(): can't open device "\\.\COM3": The system cannot find the file specified."

I've installed the FTDI drivers for the redboard, but the error remains. I can't find the board in device manager, or open the port in the tools section on the arduino. I'm pretty much stumped here until I can fix the issue, so any help would be appreciated.