ESP8266 Community Forum

- Tue Jan 26, 2016 7:40 pm #39787 OMG!
How is the correct flash size for ESP8266 ESP-01 ?
Instructions its no so clear for this model.. I think I use 512k.. let me try with 1Mb...

- Tue Jan 26, 2016 7:47 pm #39788 Hello al9, as far as my experience with the esp-01, the blue ones tend to have 512K and the black ones tend to have 1M. Let us know how you make out and possibly take a quick pic of your board and post it here.

- Tue Jan 26, 2016 9:08 pm #39792 Hi.
I have the blue one, with 25Q40 flash chip, that is 512k.
I tried to erase & reflash (512k) but was the same.

- Tue Jan 26, 2016 10:43 pm #39797 If you have previous code in the module that could be running (module will start default program 30 sec after initial boot up)

So be sure to either save and RUN an empty program to the module to make sure it is not busy trying to run previous program code or in your running code include an exit button to stop the module before you try and save the new code.

If your module is trying to run another program while you save a new program it could cause it to timeout.

just a possibility
dwight