How to use serial monitor if powering ESP32 from external 3.3V?

John_Wicks
Posts: 1
Joined: Thu Jan 07, 2021 1:32 pm

How to use serial monitor if powering ESP32 from external 3.3V?

Postby John_Wicks » Thu Jan 07, 2021 1:40 pm

Maybe I have missed something in the data sheets.

But if the onboard 500mA 5V to 3.3V supply is insufficient and I require something more, then how can this be achieved while still allowing me to use serial monitor for debugging purposes?

It seems if I put in my own regulated 3.3V supply to the 3.3V pin on ESP32 then according to the data sheets I can not also use the USB cable as it also supplies power, so how can I view the serial monitor?

Should I power the ESP from 5V and put in a separate 3.3V supply to power the peripherals, seems like having my own and ESP32 3.3V supply feeding into the same rails is not a good design.

Any ideas welcome.

Thanks

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