For that I started to design a breakout/dev board for the ESP8266EX (EX!) chip.
So far I included following features on the PCB :
SMA Connector for the RF port (Antenna and for attaching a Spectrum Analyzer or RF Power Meter)
All ESP GPIOs and IO Pins brought out on Headers
FT2232H for UART , JTAG and flashrom (JTAG/flashrom selectable by jumpers)
Buttons for Reset and UART Boot (GPIO0)
Jumpers for the other boot modes (SDIO,Flash)
The PCB isn't completly layout'ed yet and the schematics are just whacked together at the moment (some parts are missing and values are wrong).
I'm posting this here because I'm looking for a review of the schematics and layout. Also when someone thinks it would be nice to have feature XY on the PCB as well please shout.
Probably I will send the files the dirtcheap pcb (thanks Squonk for the hint!) , so I will have some spare PCBs if anyone is interrested...
I know that the PCB Layout violates some of Espressif Layout recommendations , and is somehow contradictory to what I said in the Reference Layout thread
Here is a PDF of what i got so far , any comment is welcome
https://drive.google.com/file/d/0B_5UXa ... sp=sharing
And a nice shiny rendering how the PCB might look like