In my first revision I decided to go easy at first, so I made simple board which will contain these components:
- 3.3V voltage regulator LM1117
- Reset button
- Flash button
- FTDI connector
- LCD connector
- Some resistors
- Some capacitors
- LED for flash state
I draw everything in Eagle and schematic looks like this:
Then I placed all parts where I thoughed will be appropriate :
After that I send my design to one of my friend which make PCB here in Czech Republic (www.plosnaky.cz) , waited for few days and pick one up. Sadly I have no picture before I start assembly of the board so here is how first board look like when I fineshed it.
How you can see my first design is not perfect. When I start testing of the board, I found out that I forget to make connection between 3.3V and LCD so for this is the red cable. Also I had bit of problem with power for ESP12E so I added silver "jumper" wire. After that board was working so I learn my mystakes and fixed them in revision B of the board.
This board take power from FTDI connection which you can see on left side of the board.