WIFIO is a dual Arduino WIFI module (ESP8266+ATMEGA328P) FCC approve-able with transferable licence. Can use the 328P for I/O expansion also...

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By Alvin_Liu
#61416 hello everyone
I'm a green hand with esp8266 ,today i flash the Nodemcu fiemware into my esp-12f
and i success upload a simple sketch <blink>
but i have problem is why when i cut out the power or reset and my esp-12f cannot work like before i reset it
(my mean is why my esp-12f can't remember the code after i reset it)
i use basic esp-12f module
Image

ps: sorry my English is not very well :P :P
User avatar
By mrburnette
#61447 https://github.com/esp8266/Arduino/blob/master/doc/boards.md

The link above has some basic schematics for minimum configuration. If you can program the chip and it works, then a power-cycle does not bring the unit back "alive": you likely have a wiring issue, like reset being low ... you need a pull-up of about 10K to 3.3Vcc

Ray
User avatar
By marcelstoer
#61458
Alvin_Liu wrote:i flash the Nodemcu fiemware into my esp-12f


This is the Arduino forum...viewforum.php?f=17 would have been more appropriate.

Alvin_Liu wrote:why my esp-12f can't remember the code after i reset it


The code needs to be in a file called init.lua, see http://nodemcu.readthedocs.io/en/latest ... d/#initlua