Hi Guys, I don't think we can show a picture of the PCB since its going to be in a retail product. It's all under NDA. Pretty cool that everything worked the first try since we have a lot happening on this absolutely tiny board. Pretty much all components are 0201 sized and may move to 01005 in the ...

Thanks for your responses. I'm wondering if the internal 1.8V regulator has enough current for the internal flash? I have a 1.8V switching regulator on my board that I can solder to the VDD_SDIO. Other than that, I'm thinking that it is a software issue with the Windows download tool since I can suc...

So I am using the ESP32-D2WD which has 16Mbits of flash internally. I can now see the MAC addresses but I am unable to program the internal flash. Can anyone see what the problem is? I have it set to QIO for the flash interface. Is that correct? Any speed recommendations for everything else? I have ...

Thank you very much for the recommendations and debug help. I found the problem. I had the wrong capacitor on the crystal so the crystal was not working. The CP2102 circuit above works great! n Again thank you!

Jamie

So I have cut the trace for VDD_SDIO and strapped the MTDI pin high. I see 1.8V on the VDD_SDIO pin which is a great start. CP2102 interface.jpg Now I just need to program the ESP32 with the Windows "ESP32 Download Tool, V3.4.8". Does anyone know what settings to use? My crystal is 40MHz on my PCB. ...

Can someone comment if the internal flash in the ESP32-D2WD is able to handle 3.3V or what is needed to adjust to allow the ESP32 to run at 3.3V? See the picture attached.

So is the new ESP32-D2WD able to run at 3.3V or not? The datasheet shows it can run from 1.8V to 3.6V. Is that not true for the embedded memory version? This should be stated in the datasheet clearly as I just designed and built up a custom PCB with 3.3V running all the voltage rails. Is the interna...