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I need to determine the flash size of my ESP8266 on my NodeMCU module in order to flash the AT firmware onto the board. Apparently different boards come with differently-sized flash memories. Can anyone tell me the easiest way to find the flash size?

dda
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Sumanth
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2 Answers2

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Arduino's ESP8266 support includes an example sketch called CheckFlashConfig. This probes the board, and prints the flash memory size.

scruss
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The easiest way (windows at least) is to use Espressif's flash download tool - don't select anything to flash to the device, select the appropriate com port, click start, and the details of the device will appear in the Detected Info window

Jaromanda X
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