ESP8266 Community Forum

Claude wrote:The info is destilled from all the post here , the datasheets and application notes and from the leaked 0.9 IoT examples.

Aha. Thank you. That was the missing bit (leaked 0.9 example).

elektronika_ba wrote:Some of the guys on forum have signed an NDA with Espresiff and get full documentation/sources from them

What is the procedure of signing those NDA documents and getting all information one needs?

Full documentation is not significantly different than what is posted here. Many important things are simply missing from the documentation. Even simple things like how much RAM/ROM does the chip really have?

elektronika_ba wrote:Some of the guys on forum have signed an NDA with Espresiff and get full documentation/sources from them

What is the procedure of signing those NDA documents and getting all information one needs?

Almost all docs that you get under NDA are leaked

The Econotag is very similar to what you are building. It is open source hardware.
https://www.tindie.com/products/malvira ... -mc13224v/

Hardware docs.
https://github.com/malvira/econotag

Mar is a very good RF engineer. Maybe you can use his antenna design since your are on a larger PCB.