Sounds like you may have damaged the USB interface chip.
A simple test is to connect D0 & D1, then send the board a character via the serial port and see if it comes back.
If not the USB is not working. How are your surface mount soldering skills?
Sounds like you may have damaged the USB interface chip.
A simple test is to connect D0 & D1, then send the board a character via the serial port and see if it comes back.
If not the USB is not working. How are your surface mount soldering skills?