Question for additional wired-telementry


I would like to connect Raspberry PI to computer via USB to set parameters.
Maybe I will connect it to one of four Raspberry PI USB port.
In this case, could I apply the following option on /etc/default/arducopter?
TELEM2="-D /dev/ttyUSB1"

Thank you

You could do this if you use a USB Link cable, but I do not know which will work with the Raspberry Pi.
You could also use two USB to UART adapters, one plugged into the RPi and the other one in your PC, to establish a serial connection.
A simple USB cable will not work, because both your PC and the RPi are USB hosts. That
is the reason there are (almost) no USB-A to USB-A cables.

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