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README.md

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@@ -56,6 +56,18 @@ On a PC you can use the command line and the following command:
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chgport
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```
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On my PC when I use the `chgport` command I get the following output:
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```
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AUX = \DosDevices\COM1
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COM1 = \Device\Serial0
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COM3 = \Device\Serial2
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```
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In my Node.js I would use `\Device\Serial2` as my serialport string.
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If you're not sure which one is your Arduino, just disconnet your Arduino and execute the cpommand again and take note of which port is no longer on the list.
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Or you can find the name in [Arduino Create](https://create.arduino.cc/editor) in the drop down menu used to select your Arduino.
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Create a file called `app.js` and add the following code:

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