Using ESP32-WROOM-32 or ESP-WROOM-32D

[plajjd]

Can someone from Espressif provide recommendation as to the differences between the ESP32-WROOM-32 and 32D parts?

We are preparing to order production volumes, and it is not clear to me what the differences are.

We have been using the ESP32-WROOM-32 for development. But I see that the 32D is a newer part, I just do not know what the advantages of the 32D may be.

Thank you!

Phil.

[Franco]

Hello Phil, the D version is the updated module and recommended for new designs in Espressif Product Ordering Guide, it uses the 5x5mm ESP32 package inside, that allows a different internal routing than the non-D. The antenna design has also changed. The result is better RF performance. If you can switch to the D, you may want to do so, otherwise you can go on with the non-D. From a fw standpoint it does not make any difference. But looking at scalability, the 8M, 16M and U versions are all derivatives of the D. Thank you for using Espressif.

[AlexanderK]

Would you please confirm these modules are fully pin-to-pin HW compatible and interchangeable. I mean that I have HW design which has been already produced once in mass production with ESP32-WROOM-32. And now I need to repeat the production - can I use ESP32-WROOM-32D instead of ESP32-WROOM-32 without any change in production process (Schematics, Layout, Flashing, FW)?

[kongon]

I used both modules in my desing. There aren't any differencies between of both modules. 32D is new module only.

[bessho]

@AlexanderK What happen to your finding? We switch from ESP32-WROOM-32 to ESP-WROOM-32D. We can't even run a Arduino hello world on ESP-WROOM-32D. It completely does not work. It does not flash. It does not flash to the address. Help!

[aegis21]

I have been using ESP32-WROOM-32D for communication with esp8266 using esp-now without a problem. It is the 30 pin development kit with ESP32S stamped on the underside. Using interrupts to activate espnow sending of data. Works great!!! However I have many
ESP32-WROOM-32 which are also stamped ESP32S and they do not work at all. It appears they reset upon interrupt. I use the same file for both, uploaded through arduino IDE and using ESP32 DEV Module board from arduino Since I have a large number of these units it would be great to have these work also! Thanks in advance.