the difference between ESP-WROOM-02 and ESP-WROOM-02D

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YFujisawa
Posts: 1
Joined: Mon Sep 03, 2018 9:02 am

the difference between ESP-WROOM-02 and ESP-WROOM-02D

Postby YFujisawa » Mon Sep 03, 2018 9:22 am

Hello everyone.
Please tell me the difference between ESP-WROOM-02 and ESP-WROOM-02D.
It is said that ESP-WROOM-02D improved the performance of wireless, but how did it improve specifically?
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alekskuzmanovic

Re: the difference between ESP-WROOM-02 and ESP-WROOM-02D

Postby alekskuzmanovic » Thu Jan 09, 2020 7:48 pm

In the schematics of ESP-WROOM-02D the antenna filter is designed differently (with a higher incudance) than the one on the ESP-WROOM-02 board. Also the VDD33 rail uses a different type of filter (with an inductor and a capacitor instead of pure capacitive smoothing) on the ESP-WROOM-02D.
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lindaperryly
Posts: 1
Joined: Tue Feb 02, 2021 6:57 pm

Re: the difference between ESP-WROOM-02 and ESP-WROOM-02D

Postby lindaperryly » Tue Feb 02, 2021 6:58 pm

To help me through standard deviation calculator
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