ESP8266 Community Forum

- Thu Sep 29, 2016 5:37 pm #55893 I think they added a few pull-up resistors. This was throwing me off for a while. I was trying to use CH_PD to turn on the module and now it is pulled high.

ESP8266__ESP-12S_Schematic.png

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- Thu Jan 05, 2017 9:15 pm #60512 Would anyone know what the flash size is on the 12S module?

- Thu Jan 05, 2017 11:22 pm #60519 I would think it would be the same as all the ESP-12s. Which would be 4MB. The 07's are 512kb as I recall. Depending on what firmware you're using there are several ways to query the module.

- Mon Jan 09, 2017 11:24 am #60724

I would think it would be the same as all the ESP-12s. Which would be 4MB. The 07's are 512kb as I recall. Depending on what firmware you're using there are several ways to query the module.

I am a bit perplexed.
Using the Arduino framework, ESP.getFlashChipRealSize() returns 1048576 bytes and my compiled sketch is 250016 bytes. However, I am unable to perform an OTA update, with the default sketch (OTA_BEGIN_ERROR) leading me to question what flash I have on this module.