@madpilot makes

Garage Door Opener – Doubling capacity

So, it turns out the ESP8266-01 (at least the one I have) supports 1MB of storage. I had been butting up against the 512kB I thought I had, and it turns out I needn’t worry.

Running this command:

ESP.getFlashChipSizeByChipId()

Will tell you what your chip supports.
This means I can probably incorporate Over-the-air updates, which will be handy. I still need to keep the image under 512kB (OTA needs the space to upload the new image).

w00t!

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