Hello!
I am wondering if I can connect an Arduino to my computer via the 5V, GND, TX, and RX pins. I read that the USB data lines on the connector aren't connected to the TX and RX pins, but does it work in reverse?
Questions? Comments? Answers?
@anon44338819
Yes, use the USB.
Completely wrong.
You didn't specify which of the many Arduino boards of which you are speaking, but most have a 2nd chip on them for interfacing with the computer via USB.
I have an Arduino Uno.
The Uno has either a 16u2 chip or a CH340 chip to provide the USB interface. The Tx/Rx pins connector to that chip and not directly to your computer.
Testing with a USB cable of an old wired keyboard, which has IDC connectors, the Arduino only comes on, not recognized by the IDE. I read this saying that it is slower, and now that I think about it, there is no use for this.
There's nothing to test, they are two different protocols and will not work without a translator.
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