Pin 4 of the USB connector is Ground.
It and the Shield should be connected to VSS on the LAB-X1.
Have you removed the MAX232 chip?
You've set the RX pin to output, which is likely to cause high currents if the MAX232 is still there.
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Re: USBDemo, something to learn USB a little bit
Pin 4 of the USB connector is Ground.
It and the Shield should be connected to VSS on the LAB-X1.
Have you removed the MAX232 chip?
You've set the RX pin to output, which is likely to cause high currents if the MAX232 is still there.
DT
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