ESP32 Forum

i have a problem with this board i use cable type a to type c it work in 2 port fine (com,usb-otg) but when come to use cable type c to type c it work in port usb-otg good but in other port com(uart) happen wierd thing imagine the cable each end of cable will name one (a) and other end (b) if am connect (a) to laptop and (b) to board will not work but if rotate end b and connect to board (com) port work good and and am try to use other cable same thing happen

am tryed to test 4 resistor 2 is connect to com and 2 is connect to usb-otg

in com port pin name cc1 will get 0.02ohm but in other pin cc2 get 5.8 to 5.11 and cc1,cc2 of usb-otg am get from5.8 to 5.11

my question is this is normal or not becuase same port of lap same cable when connect to phone it work fine without rotate or any thing just plug and play

Looks like somehow CC1 is shorted to ground on that board. Possibly it's a blob of solder on the USB connector pins or something.

Looks like somehow CC1 is shorted to ground on that board. Possibly it's a blob of solder on the USB connector pins or something.

am check and still same and this do with my 2 board i think it this from factory or some thing

thanks for try help

Potentially. Not all third-party (not made by Espressif) ESP32 boards are made to the same quality standards, and some of them seem to test their boards solely with an USB-A-to-C cable which doesn't use the CC lines.