ESP32 C3 mini mysterious behaviour

[jeremyB]

Help!!

I designed a own ESP32 C3 Board.
Image of the Shematics is attached.
I could Flash the ESP at the first time without any Problems. After that i could not flash it anymore. I tried it for hours. The next day i tried it again and it worked lile a charm, thee whole day without any Problems with difderent Code. But then it started again and the ESP32 brought a lot of different errors like: timeout exceptions etc..
I built another board and got the exact same issue.
Can anyone help me please... Im frustratet

[Sprite]

How do you power that chip, as in: what LDO is that?
Do you use the UART or the USB lines to program the chip? Can you try putting the chip into bootloader mode manually? (hold boot, press reset)

[mikemoy]

Just something I noticed...

It looks like from your schematic that you want to minimize power by turning off LORA & GPS parts via the LORA_GPS signal to Q1.
If so, your doing it wrong. You cannot remove a power GND from devices thinking it will power them down.
I mean, technically it will but then it will cause all sorts of goofy things to happen to the other GPIO pins, and even try to draw power from them. Its a total NO-NO- thing to do.