ESP_Sprite wrote: ↑

Mon Oct 03, 2022 2:50 am

Looks like your ESP32 is not booted up. What's the level on EN? 3.3V still stable?

EDIT: Perhaps I'm missing it, but is EN pulled up anywhere now? I still don't see it in the schematic.

Yep, 3.3V with 10K pull-up and 10uF.

Yes. U0RXD of the ESP32 goes to pin 2 of the header. On the other side, pin 2 of the header is called U0TXD (swap 1), but then that line runs to U0RXD of the CP2102 (swap 2) Hi there, I assembled the new version of the board and switched to ESP-Prog as a programmer, to take out a variable that migh...

Ok,

I revisioned the schematic and added all the necessary fixes. There's also the EN 10uF cap and pullup res onboard now.

I'll route the PCB and see if it works this time around, but the error was anyway quite odd. II suspect it might be on the esp32 side.

Are you missing a pullup on EN? Also you need separate 5.1k resistors for each USB CC pin. Raspberry Pi had well-publicised problems sharing the resistor like that. Hi, thanks for pointing that out. Yes, I already changed it for the next rev of the PCB. I checked the voltages on the uart bridge and...

Hi, thanks for the reply. Are you sure about it? They seem ok to me. I swapped them in the SCH so that I don't have to remember it every time. (I anyway tried to swap them IRL just to double check) Yes. U0RXD of the ESP32 goes to pin 2 of the header. On the other side, pin 2 of the header is called...

You swapped U0TXD and U0RXD twice, meaning the Rx of your serial-USB chip is connected to the Rx of the ESP32. Hi, thanks for the reply. Are you sure about it? They seem ok to me. I swapped them in the SCH so that I don't have to remember it every time. (I anyway tried to swap them IRL just to doub...

Hi all, I've designed a very simple board using the esp32-pico-v3 and an external flasher using a CP2102. when I try to flash anything, I get this error: esptool.py v3.3 Serial port COM6 Connecting.....................................An error occurred while uploading the sketch . A fatal error occur...

Hi all,

I'm designing a custom board around the ESP32-S3 chip.
I was wondering if anyone had the values of source resistance RS and reactance XS for the S3 package.

Thanks in advance.