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Re: ESP12E Useable pins and schematic feedback
Posted:
Tue Apr 24, 2018 5:02 amby btidey
I know the pull up on RX is often recommended (and harmless), but I have never used it on many ESP-12Fs (no serial interface attached) and have never experienced any boot problems without it.
The RX pin has the internal pull up (~36k). Even if I deliberately pull this down with 2.2K, they still boot fine for me.
Re: ESP12E Useable pins and schematic feedback
Posted:
Tue Apr 24, 2018 7:08 amby rudy
I tried it again last night. Ran a sketch, then disconnected the power, disconnected the serial connections, and it would not run the code. The module is a ESP-12E. I have not tried it with the ESP-12F.
I suspect that it is a software bug in the core routines (or bad decision) and hopefully corrected at some point. Maybe it has.
Re: ESP12E Useable pins and schematic feedback
Posted:
Tue Apr 24, 2018 8:32 amby btidey
Interesting.
I have used 12Fs exclusively and I had thought the only significant difference was the aerial design but maybe they do tend to use an updated chip. I don't know if there is any calls one can use to get details on chip version.
Might be interesting to see if the module transmits anything out of TX with just the RX disconnected.
Re: ESP12E Useable pins and schematic feedback
Posted:
Tue May 29, 2018 8:16 amby spy king
Hello!
Could I request some feedback form the experts here on my simple layout?
Its a simple board with a SPX3819 LDO + TTP223 capacitive touch
Cheers!