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ESP-12E / ESP-12F / ESP-12S Module
Model reference: ESP-12
ESP-12E / ESP-12F / ESP-12S

Available from:
Aliexpress.com
Banggood.com
Amazon.com


Manufacturer:
Ai-thinker.com

Install method:
USB to Serial

GPIO #Component
Set to Generic Module (18) in "Configuration - Configure Module".

ESP-12(E/F/S) is the most common Wi-Fi module format and is pin compatible with other non-Espressif modules such as WB3L, WB3S, WR3, WR3E, WR3L, WR3N, CB3S, CB3L, C-8138 and moreā€¦

ESP-12E/F modules need the GPIO15 pulled low and CH_PD or EN pin pulled high to boot.

ESP-12S modules have those pins already pulled internally.

Serial Flashing ESP-12S

Wiring ESP-12S

Datasheet

Serial Flashing ESP-12E/F

Wiring ESP-12E/F

Datasheet

You can purchase (AliExpress, Amazon, Banggood) a test board for eforless flashing. Just drop the module in, plug in the USB cable and flash!

Test Board