Selected serial port does not exist

Q&A Forum › Selected serial port does not exist

Alan Brody asked 5 years ago

When trying to download an Arduino script to an ESP8266. I get the following error:

the selected serial port _
does not exist or your board is not connected

However I verified the port using Device Manager and made sure that same port was set in Arduino IDE. Do you have any suggestions?

One more point on this. I am running your code from Part 1, Module 4, Unit 3 of your Home Automation Using ESP8266. I get the error when433MHz transmitter is connected. If I disconnect that, the code will load. If I reconnect after the code has loaded, I just see a series of dots in the Serial Monitor.

6 Answers

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Bernie Benson answered 5 years ago

I set the port in the platformio.ini fife.
upload_port = Com6 (your port number may be different.

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Sara Santos Staff answered 5 years ago

Hi Alan.
Can you tell me the exact code you’re trying to upload?
You can point the page on the eBook.
Regards,
Sara

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Alan Brody answered 5 years ago

It starts on page 219.

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Sara Santos Staff answered 5 years ago

What is the ESP8266 board that you have?
Can you try connecting the module data pin to another GPIO?
Then, change the following line of code to match the GPIO you’re using:

mySwitch.enableTransmit(2);

Regards,
Sara

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Alan Brody answered 5 years ago

That did it! Thanks.

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Sara Santos Staff answered 5 years ago

Great!
I’ll mark this issue as resolved. If you need further help, you just need to open a new question in our forum.
Regards,
Sara