ESP8266 Community Forum

Hi,

How do I know the size of the flash of the ESP-03 ? I'm using Arduino IDE and ESP8266 Core 2.3.0, when I export the bin file I have several option, but I don't know which one is correct. ? And what about SPIFFS size? Or not?
Thanks

The ESP-03 has a 4Mbit (= 512kbit) flash by default (take a magnifying glass and see the inscription of the flash, it should read "25Q40BT").

Hi QuickFix , thank you for your reply.

And what about the SPIFFS?

Thanks

Depending on your needs, you can either use 64k or 128k for SPIFFS on a 512k flash.

But don't take my word for it, you'd better do some reading on the topic, since one instructable is worth more than my thousand words.