COM message reception - Garbage data

LucSkywalker:
I have to install the software COM port in order to use it in Arduino IDE and to have a COM port available.

It sounds like you don't understand anything about PCs at all.

You don't have to install any software to have the Arduino Uno communicate with SoftwareSerial.

However, you do have to install a driver if you are using a USB-Serial port adapter. That driver is provided by the hardware manufacturer.

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