ESP32 Forum

Hi everyone,

I’ve been working on this schematic diagram and would love to get some feedback. Does anyone spot any errors or mistakes that I might have missed? I’d really appreciate any suggestions or improvements!

Thanks in advance!

* IO8 is floating at the moment. This is a bootup strapping pin that is floating by default; unless you add a pullup or tie it to +3.3V, you will have random issues getting the chip into download mode.
* Get rid of C28; it'll cause your board to boot up in download mode when power is applied.
* You can leave off C22, as it's in parallel with C26 anyway.
* Also, I'd personally make TXD0/RXD0 accessible somehow, even if only through a set of test points; sometimes the UART is useful for debugging and if you don't bring it out, you cannot reach it under the -Mini module.

I really did miss GPIO8. Thank you very much for your help!