Hello, have you gotten any resolution to this? I am experiencing the same thing. I ended up throwing out the design and using the ESP32-DevKitC-V4 with an external 3V3 regulator (I have desoldered the one on the DevKit). It works well. The problem with the new design is that whenever I have used th...

ESP_Sprite wrote: ↑

Thu May 06, 2021 3:43 am

Interesting. Nothing in your schematic looks wrong. Possibly it's something weird, like a cracked ceramic capacitor on C5?

I have several iterations of the same board with the same problem. It runs well for like 20 mins before EN fluctuates.

Hi, I am a student working on a custom PCB with an ESP32-WROOM-32E module in a Project course. I use FT232R as USB-UART bridge. I am having problems with EN pin dropping below the required voltage for chip to be turned on. I have changed capacitor value between EN and GND with no success. Schematics...