WiFive wrote: ↑

Tue May 12, 2020 11:02 am

Why do you have two matching circuits?

Hi,I refer to the design of ESP-EYE. I am also very curious why there are two.

https://makingfun.oss-cn-qingdao.aliyuncs.com/ESP32/ESP32_Forum/B-Box-01_watermark.png Recently, I designed a small piece of hardware with the ESP32-S2 chip, but there are problems in the antenna circuit design. I hope to give some guidance, such as layout rules and how to match the Π-type network....

https://makingfun.oss-cn-qingdao.aliyuncs.com/ESP32/ESP32_Forum/B-Box-01_watermark.png 最近用ESP32-S2芯片设计了一个小硬件，但是在天线电路设计上出现了问题，希望能给出一些指导，比如布局规则，以及Π型网络如何匹配等。 我针对前两版的PCB做了一些修改和优化，下面是将要投板的第三版的设计，希望工程师或者大牛可以帮忙给看一下，目前设计是否可以。 原理图： 天线-原理图_watermark.png PCB布局图： 天线_watermark.png 3D视图： 天线-3D_watermark.png 使用的是...

You probably can't use the 'dummy bits' feature here, as the 'command' is more than the ESP32 can send as a dedicated command. Suggest you just send 17 bytes of data as a normal data payload, with the first 9 containing the command. Thanks for reply.I open an issues at the Github.The engineer of es...

Hi everyone: In the few days,I working onthe SPI commuication with ESP32.But I have a problem.I refer to the manual to send it a test package，but my SPI Slave device(TW8035 IR Camera) didn't response any data.I have no ideas with this problem. https://makingfun.oss-cn-qingdao.aliyuncs.com/ESP32/ESP...