most seem to refer to 'boards with more pins'.
If I have to flash new esp firmware, I think somewhere, not sure where, it stated you could remove the chip from the uno board, and connect rx/tx of the esp 01 to the rx/tx of the Uno
what then happens to the voltage on the rx/tx pins?
Which is the preferred firmware, and from where
I'm new to this wifi stuff, and it's a steep learning curve, imnsho.
Thanks for the explanation and warning. I'm hoping to follow your instructions, and I will report back. I'm thinking I may be able to get away without having to re-flash the esp-01, if Its baud rate is not 9600. (I think I've one or two which still have a usable baud rate). I guess I could use the uno, as you described, and communicate directly at 115200, and send the AT+UART query/reset commands from the arduino serial monitor, without having to reflash the esp.
However, as mentioned elsewhere on the web, why not just use the esp on it's own? Initially I only want to monitor a couple of sensors, and that may work, if I can get the code into the chip. I'm going to leave that until after I've got this linking to the uno working.
Perhaps there could be a 'sticky' post at the top of this section, giving a recommended procedure, so that everybody could start from a known place. However, to cover all options, I guess it would be a pretty lengthy task to produce such a tome and allow for future developments ...
Have they added more AT commands, or just removed bugs/improved speed/whatever in the later versions? Any suggestion as to which version to try?
(I've not yet sorted how to reliably set the baud rate to 9600, but at least I've got the chip flashed.)
I'll have forgotten this before next week