Originally Posted By: mlord
I just had a look at the schematic, and yes, they are. You will need to cut the trace at JP4 to be able to use the WT32i serial port directly (non-USB).

Just run a very sharp knife between the two solder blobs there to cut the thin copper trace. This will deny power to the USB-serial chip.


Pro tip: When cutting the trace at JP4, be extra careful not to peel up the pads or to cut other nearby traces.

I accidentally peeled up the pad on the USB side of JP4 and this broke a trace coming off the side of that pad.

Turns out that the main connection between "+5v" and "CHG" goes through that trace to that pad. If you break that trace or pad, your board won't ever power up and you have to make a jumper wire between +5v and CHG.

smile
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Tony Fabris