ESP32-WROVER Footprint,

awl007
Posts: 2
Joined: Sun May 07, 2017 2:42 pm

ESP32-WROVER Footprint,

Postby awl007 » Sun May 07, 2017 10:40 pm

Hi,

I am hacking together a quick PCB board that supports both the ESP-WROOM-32 and ESP-WROVER modules. Does anyone know if the ESP-WROVER module has a ground pad in the same location as the ESP-WROOM-32? Also from ESP32.NET it seems the ESP-WROVER is using the 1.8V IS25WP032 FLASH (ESP-SRAM); which means GPIO6-11 and GPIO16,17 are at 1.8V ? Is there a way to get access to VDD_SDIO?

Best

Al

WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: ESP32-WROVER Footprint,

Postby WiFive » Mon May 08, 2017 2:50 am

I don't think vdd-sdio is broken out but gpio16-17 are used by the ram anyway.

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rudi ;-)
Posts: 1698
Joined: Fri Nov 13, 2015 3:25 pm

Re: ESP32-WROVER Footprint,

Postby rudi ;-) » Mon May 08, 2017 4:06 pm

awl007 wrote:
Does anyone know if the ESP-WROVER module has a ground pad in the same location as the ESP-WROOM-32?
hi

perhabs this "eye catch just in time from now on a Wrover and Wroom" helps
IMG_6460_s.jpg
IMG_6460_s.jpg (308.49 KiB) Viewed 10642 times
..
IMG_6464_s.jpg
IMG_6464_s.jpg (203.18 KiB) Viewed 10639 times
awl007 wrote:
Also from ESP32.NET it seems the ESP-WROVER is using the 1.8V IS25WP032 FLASH (ESP-SRAM); which means GPIO6-11 and GPIO16,17 are at 1.8V ? Is there a way to get access to VDD_SDIO?
GPIO16 -> NC
GPIO17 -> NC


best wishes
rudi ;-)

edit: btw, if you see the shematic of Wrover Kit V2, there is footprint for Wrover and Wroom, but there is Gpio16 and GPIO17 on the footprint. but i think this is only cosmetic
and not functionally cause PSRAM version...
WroverKit2.png
WroverKit2.png (53.63 KiB) Viewed 10642 times
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awl007
Posts: 2
Joined: Sun May 07, 2017 2:42 pm

Re: ESP32-WROVER Footprint,

Postby awl007 » Tue May 09, 2017 12:30 am

Thanks Rudi!

santanapablo1975
Posts: 34
Joined: Wed Feb 15, 2017 8:31 pm

Re: ESP32-WROVER Footprint,

Postby santanapablo1975 » Fri May 12, 2017 5:20 pm

Hi All,

Somebody hier would have the sch for the new 2 column WROVER module?

I would like to see the circuit dor the external SPI FLASH and the external PSARAM.

Regards

Juan

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