STM32F103VET6 and CH340G

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gazy98

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Hi people !
I have a problem with my PCB. I recieved it a few days ago and it is already completly presoldered. If i connect it via USB-TYPE B to my pc it is showing me nothing in device menager.... The CH340G should be visible to be able to programm it via usb....


If i connect it via micro-usb unknown device is popping up. But that does not help me .

I have added the schematic. Hope someone can help me.
 

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  • Schematic_INTERFACE PCB_Sheet_1_20200120130255.png
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The driver is installed. If i connect an arduino Mega with ch340 it is showing up....
 

bypass capacitor is installed but still no function....
 

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