[ESP32-S3-DevKitC-1U] Can't get serial monitor to work

ESP32-S3-DevKitC-1U on Arduino IDE. Load program OK but never any serial output. Simple program, just Serial.begin(115200) and a delay(1000); in setup() then a simple Serial.println(“Test”); in loop(). I’ve tried 3 known good cables, various boot and reset button sequences all with no joy. Is there some procedure with this part that is different than other ESP32s ?

Hi @aldavis taking a look at this dev kit, it’s a little unique with dual usb ports…

While you can program from one, it looks like the usb-serial is tied to the 2nd port.

Please try using 2 cables at the same time, one for programming, while the other for serial data…


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Yes that works, thank you. Unique is right, I’m also working with a
different version (Teyleten Robot ESP32-S3-DevKitC-1-N8R2) that also has 2
USB ports but on that one the same port is used for both functions.


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