@ESP_Sprite and @username
Perfect, thanks a lot to both of you for your support and helpful answers. I will keep you informed about the situation when my new board arrives !



EDIT : The new board arrived and all is working perfectly. Thanks to you guys !

@username
I think I understood what you mean. Here is my newly updated schematic. Do you see any failure ?

@username
Ok. Here is my updated schematic.

I added capacitors, as you said. I guess this is for voltage stability purposes.

Can you confirm my schematic seems correct ?

@ESP_Sprite
Well, I added a RC network and it worked. As I did it "quick and dirty" in order to test, I sometimes get a write timeout error, but it eventually works. I would think that if I include this part to my custom PCB, it would work every time. A big thank for this helpful answer ...

@ESP_Sprite
EN of ESP32 is connected to nothing else but the collector of a transistor.
I have seen schematics using RC network (for newbies, it means resistor and capacitor network. It ensure a stable power-on reset), and other not using it. I doubt this is the reason of my problem but I may be ...

Hello,

Both IO0 and EN are flashing while uploading (I measured voltage on those pins).

When I open Serial Monitor on Arduino IDE and I plug my PCB, I get this :

Capture d'écran 2024-12-05 203713.png

Strangely, I discovered that if I connect EN to IO23 using jumpers while uploading, it seems ...

Hi guys,

I feel ashamed to ask such a question. I am trying to make a custom PCB design for a project. I made the schematics, ordered the board but when I solder all components, I am unable to upload my Arduino sketches to my ESP32.

Here are the components I am using : USB C (16 pins), CH340C (USB ...