ESP8266 Developer Zone The Official ESP8266 Forum 2016-06-01T10:33:01+08:00 https://bbs.espressif.com:443/feed.php?f=65&t=2216 2016-06-01T10:33:01+08:00 2016-06-01T10:33:01+08:00 https://bbs.espressif.com:443/viewtopic.php?t=2216&p=7160#p7160 <![CDATA[Re: WROOM-02 - PCB Layout]]>
1. In the WROOM-02 documentation, it shows the bottom of the WROOM's PCB. It appears to be a square patch of open copper. Should this area also be soldered to the projects PCB?
->There is a large ground pad in the bottom of ESP-WROOM-02 which is just for heat dissipation. It can work ok whether you connect it to GND or not.

2. The WROOM-02 documentation shows the pad positions on your PCB but does NOT locate the open copper area. Can you supply the size and position of that area? -- I don't want to route any traces within that area.
->Please refer to "0C-ESP-WROOM-02_Datasheet__EN.pdf", there is the position of this GND PAD.
viewtopic.php?f=21&t=412&p=1545#p1545

3. Do you recommend positioning the WROOM such that the antenna area of the WROOM is positioned to hang OFF the project PCB or positioned over the project's PCB.If the WROOM is positioned OVER the project's PCB, do you recommend the project's PCB provide a GND pour UNDER the WROOM's antenna area or should ALL copper be removed from that area?
->Please refer to "ESP-WROOM-02 PCB Design and Module Placement Guide.pdf" which can be also obtained in the above link.

More questions, please feel free to let us know.

Thanks.

Statistics: Posted by Espressif_Kelly — Wed Jun 01, 2016 10:33 am

]]> 2016-05-25T05:58:02+08:00 2016-05-25T05:58:02+08:00 https://bbs.espressif.com:443/viewtopic.php?t=2216&p=7064#p7064 <![CDATA[WROOM-02 - PCB Layout[Done]]]>
In the WROOM-02 documentation, it shows the bottom of the WROOM's PCB. It appears to be a square patch of open copper. Should this area also be soldered to the projects PCB?

The WROOM-02 documentation shows the pad positions on your PCB but does NOT locate the open copper area. Can you supply the size and position of that area? -- I don't want to route any traces within that area.

Do you recommend positioning the WROOM such that the antenna area of the WROOM is positioned to hang OFF the project PCB or positioned over the project's PCB.

If the WROOM is positioned OVER the project's PCB, do you recommend the project's PCB provide a GND pour UNDER the WROOM's antenna area or should ALL copper be removed from that area?

Thanks in advance for your reply.

Statistics: Posted by jhinkle — Wed May 25, 2016 5:58 am

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