Used esp32 pico v3 , designed own pcb , but failed to show on device manager

XUEZHI
Posts: 8
Joined: Sat Dec 18, 2021 5:10 am

Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby XUEZHI » Sat Dec 18, 2021 7:22 am

I designed my own pcb with reference for pico module , heltec esp32 , using esp32 pico v3
But when i plug in , the device manager did not show anything
Also current does not show short circuit

Do I need to do anything after solder ?

ESP_Sprite
Posts: 9757
Joined: Thu Nov 26, 2015 4:08 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby ESP_Sprite » Sat Dec 18, 2021 10:24 am

Hard to say. Do you have a schematic to show us?

XUEZHI
Posts: 8
Joined: Sat Dec 18, 2021 5:10 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby XUEZHI » Mon Dec 20, 2021 6:05 am

ESP_Sprite wrote:
Sat Dec 18, 2021 10:24 am
Hard to say. Do you have a schematic to show us?
I am new to esp32 forum, first time post.
I didnt manage to attach the picture. I put it on google drive.
https://drive.google.com/file/d/1j9UmOn ... sp=sharing

Thank you!

ESP_Sprite
Posts: 9757
Joined: Thu Nov 26, 2015 4:08 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby ESP_Sprite » Mon Dec 20, 2021 6:08 am

Sorry, that picture is potato quality; all the text is unreadable. Can you re-post in higher quality?

XUEZHI
Posts: 8
Joined: Sat Dec 18, 2021 5:10 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby XUEZHI » Wed Dec 22, 2021 9:23 am

ESP_Sprite wrote:
Mon Dec 20, 2021 6:08 am
Sorry, that picture is potato quality; all the text is unreadable. Can you re-post in higher quality?
Sorry about that
https://drive.google.com/file/d/1Ce8uON ... sp=sharing
can try this link?

ESP_Sprite
Posts: 9757
Joined: Thu Nov 26, 2015 4:08 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby ESP_Sprite » Wed Dec 22, 2021 2:30 pm

That's way better. However, there's nothing in the schematic that looks like a problem to me... Could it be something like bad soldering? How much current is your PCB pulling?

boarchuz
Posts: 606
Joined: Tue Aug 21, 2018 5:28 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby boarchuz » Thu Dec 23, 2021 4:25 am

Check VDD on the CP2102N

captain_morgan
Posts: 42
Joined: Wed Dec 09, 2015 6:39 pm

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby captain_morgan » Thu Dec 23, 2021 8:36 am

Not exactly sure if this is would cause failure to enumerate (I use the QFN24 version, with the VIO pin) but it appears RSTb should be tied to VDD not VBUS.
2.1 Power
In all cases, a 1 kΩ pull-up on the RSTb pin is recommended. This pull-up should be tied to VIO on devices that have it. On devices
where VIO is connected to VDD or devices that do not have VIO, this pull-up should be tied to VDD. The RSTb pin will be driven low
during power-on and power failure reset events.

hereiam
Posts: 10
Joined: Mon Apr 19, 2021 9:26 pm

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby hereiam » Thu Jan 06, 2022 4:54 pm

XUEZHI wrote:
Sat Dec 18, 2021 7:22 am
I designed my own pcb with reference for pico module , heltec esp32 , using esp32 pico v3
But when i plug in , the device manager did not show anything
Also current does not show short circuit

Do I need to do anything after solder ?
Hi, Did you solve your problem?

XUEZHI
Posts: 8
Joined: Sat Dec 18, 2021 5:10 am

Re: Used esp32 pico v3 , designed own pcb , but failed to show on device manager

Postby XUEZHI » Fri Jan 07, 2022 6:06 am

hereiam wrote:
Thu Jan 06, 2022 4:54 pm
XUEZHI wrote:
Sat Dec 18, 2021 7:22 am
I designed my own pcb with reference for pico module , heltec esp32 , using esp32 pico v3
But when i plug in , the device manager did not show anything
Also current does not show short circuit

Do I need to do anything after solder ?
Hi, Did you solve your problem?
Nope... i checked the power for CP2102N and it gives out the correct voltage

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