Storage size of the module

[xenoxaos]

Do you happen to know how big the storage size on the module is? Is it the 512K model or the 1M model?

[jlongman]

I just compiled it using a slightly newer version of Homie and got:

Sketch uses 342,503 bytes (78%) of program storage space. Maximum is 434,160 bytes.
Global variables use 40,268 bytes (49%) of dynamic memory, leaving 41,652 bytes for local variables. Maximum is 81,920 bytes.

[spinkham]

Mine is 1MB.
you can check yours with esptool:
esptool.py --port yourserialport flash_id

It will return manufacturer and model number.
Mine were:

Manufacturer: ef
Device: 4014

You can look them up here: https://code.coreboot.org/p/flashrom/source/tree/HEAD/trunk/flashchips.h
First prefix the manufacturer with 0x and search for that, then the device.

Mine decodes to W25Q80BV, a 1MB SPI flash chip.

[classicmac]

There is also a CheckFlashConfig example sketch for the 8266 included with the Arduino IDE that gives you the information.