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Re: Problem with custom PCB with ESP32 WROOM E and sketch uploading
Posted: Sun Dec 08, 2024 9:16 am
by Peanut_Butcher
@username
Ok. Here is my updated schematic.
- Capture d'écran 2024-12-08 101124.png (144.47 KiB) Viewed 2737 times
I added capacitors, as you said. I guess this is for voltage stability purposes.
Can you confirm my schematic seems correct ?
Re: Problem with custom PCB with ESP32 WROOM E and sketch uploading
Posted: Sun Dec 08, 2024 10:59 am
by username
Not that way. For the AMS1117 parallel both caps and place one end of both caps to pin3, and the other to gnd.
Then do the same on pin 2 with the other 2 caps.
For the CH340 pin 16 you have the 4.7uf wired ok, just place the 0.1uf cap parallel with it.
This is the idea.
Re: Problem with custom PCB with ESP32 WROOM E and sketch uploading
Posted: Sun Dec 08, 2024 11:38 am
by Peanut_Butcher
@username
I think I understood what you mean. Here is my newly updated schematic. Do you see any failure ?
- Capture d'écran 2024-12-08 123637.png (160.42 KiB) Viewed 2683 times
Re: Problem with custom PCB with ESP32 WROOM E and sketch uploading
Posted: Sun Dec 08, 2024 3:58 pm
by username
You got it. If you still have troubles I would try changing out the 4.7uf on the EN RC network to something like a 0.1uf.
Re: Problem with custom PCB with ESP32 WROOM E and sketch uploading
Posted: Sun Dec 08, 2024 5:23 pm
by Peanut_Butcher
@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 !