First PCB

A project log for ESP8266 with True USB

Make it act as a USB disk and just copy files on it.

deʃhipudeʃhipu 03/23/2018 at 21:313 Comments

I still didn't get the flash to work correctly, but I had some sleepless night, so I sketched up a PCB for the first prototype. This is the top where the ESP-12F module goes:

And this is the bottom, where a Pro Micro goes:

There is also an extra button on the opposite side than the reset, for selecting the USB mode. That's pretty much it, since the Pro Mini already hast he voltage regulator and all that, and the programming pin can be held down by software.


Ted Yapo wrote 03/23/2018 at 23:38 point

Do you worry about vias underneath the ESP-12F possibly shorting?  I feel safer with at least a layer of soldermask on there.

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deʃhipu wrote 03/24/2018 at 00:22 point

In the worst case I will put some kapton tape under the module. Making blind vias in Fritzing is a bit of a chore, and this is just a prototype anyways.

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Ted Yapo wrote 03/24/2018 at 00:51 point

Yes, kapton is a good idea.  I asked because I have a PCB design with the ESP-12x that just came back today ready for soldering.  It's just a boring switching regulator test, though :-)

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