Olimex Support Forum

News => New Product Ideas => Topic started by: bogdan on May 05, 2020, 01:04:00 pm

Title: ESP32-EVB with WROVER module
Post by: bogdan on May 05, 2020, 01:04:00 pm
Hi,

Would it be possible to adjust the ESP32-EVB to include a WROVER module? I'm interested in the higher PSRAM capacity found in the WROVER module.

Thank you,
Bogdan
Title: Re: ESP32-EVB with WROVER module
Post by: LubOlimex on May 05, 2020, 01:24:27 pm
It is not possible, it would require full re-route. The reason is visible here:

(https://www.mouser.bg/images/marketingid/2017/img/185183652_EspressifSystems_Wi-FiBLEModules1.png?v=100619.0532)
Title: Re: ESP32-EVB with WROVER module
Post by: bogdan on May 05, 2020, 03:14:00 pm
Thank you for your fast reply.

I knew that a direct replacement wouldn't be possible. I was thinking either about a new product, or by modifying the current board to use an adapter from wrover to wroom.

I would expect the adapter to have at least the same length as the esp wrover module, and the ethernet interface would not fall well in the design. But I guess the board could be made longer and the ethernet interface could be moved at the edge of the new board, such that the routing modifications would be minimal.
Title: Re: ESP32-EVB with WROVER module
Post by: LubOlimex on May 05, 2020, 04:02:05 pm
We have a boards with WROVER option like ESP32-WROVER-DevKit-Lipo:

https://www.olimex.com/Products/IoT/ESP32/ESP32-DevKit-LiPo/open-source-hardware

Also the ESP32-ADF: https://www.olimex.com/Products/IoT/ESP32/ESP32-ADF/open-source-hardware

Placing WROVER is not possible for ESP32-EVB since the board uses too many GPIOs and has too many peripherals and the WROVER has less GPIOs available (they are used for the internal SRAM).