About ESP8266 module

How to detect the flash size of ESP8266 module?

  • Install latest esptool from GitHub or with pip
  • Wire ESP8266 module with a programmer
  • Run command
esptool.py flash_id

You should get some information about the flash of ESP8266 module

esptool.py v2.6-beta1
Found 2 serial ports
Serial port /dev/cu.SLAB_USBtoUART
Connecting........_
Detecting chip type... ESP8266
Chip is ESP8266EX
Features: WiFi
MAC: 18:fe:34:9f:5a:0a
Uploading stub...
Running stub...
Stub running...
Manufacturer: c8
Device: 4013
Detected flash size: 512KB
Hard resetting via RTS pin...
  • So the flash size is 512KB

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