ESP8266 Community Forum

- Sat Apr 03, 2021 1:35 am #91016 I have ESP-01 modules that are 1MB Flash, so I thought I would add to the mix of observations seen in this forum:

Code: Select allRevision      | Flash | Power LED | Blue LED   
--------------|-------|-----------|-------------
Blue ESP-01   | 512k  | None      | TX/GPIO1/low
Black ESP-01  | 1M    | Red       | TX/GPIO1/low
Black ESP-01S | 1M    | Red       | IO2/low     


- Sun Apr 04, 2021 3:32 am #91025 It's a shame they didn't fit a 2 MB flash. With 2 MB you can do OTA without complexity.

OTOH I think one will need to use an ESP12 for serious business anyway (and it has 4 MB flash).

- Sun Apr 04, 2021 7:00 pm #91031 Nothing is stopping you from swapping out the flash memory to something bigger: it's only 8 pins and not contained inside a metal shield, like other ESP's.

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.

- Mon Apr 05, 2021 4:02 am #91033 I actually have done so for quite some time. But then I realised why bother if the ESP12 has standard 4 MB and more GPIO's available. In the end the ESP12 is even smaller so I don't see why anyone would be using ESP01, only if you're on the level of experimentation with breadboards. The ESP12 isn't even that much more expensive.