COM Error uploading Code to Board

Hey everyone,

I am trying to upload a blynk code to an Adruino Uno however when I click upload it comes up with this error.

"avrdude: ser_open(): can’t open device “\.\COM16”: The system cannot find the file specified.

Problem uploading to board. See for suggestions."

anyone know how to solve the problem?

This is a PC / Arduino issue, not directly Blynk related. Google avrdude: ser_open(): can’t open device to see the various steps other Arduino users have tried when resolving their own COM port / driver issue.

Basically, either you are setting your IDE to the wrong COM port, or you have a serial port driver issue? Perhaps more likely, based on the ser_open() part, you have some other program already communicating to COM 16 when you try to upload (e.g. Blynk’s USB .bat or script file?), etc.

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