Adafruit

ESP8266 SMT Module [ESP-12S]

Name: ESP8266 SMT Module [ESP-12S]
Brand: Adafruit
SKU: AF-2491
Price: 13.8 AUD
Availability: InStock

All Products New Arrivals Microcontrollers & Development Boards Sensors & Modules Wi-Fi Modules Wireless & Connectivity Connectivity

$13.80 |

In stock at supplier

No reviews yet

The ESP-12S is a compact WiFi module based on the ESP8266 processor from Espressif. Running at 80 MHz with a full WiFi front-end (client and access point mod...

Add to Wishlist

Compare

Estimated Delivery

Arrives

Disclaimer

View Markdown

Secure checkout

The ESP-12S is a compact WiFi module based on the ESP8266 processor from Espressif. Running at 80 MHz with a full WiFi front-end (client and access point modes) and built-in TCP/IP stack with DNS support, it's designed for embedding directly into custom PCB designs.

The module features large, easy-to-solder castellated pads and comes pre-programmed with NodeMCU Lua firmware. Additional components are required for standalone operation.

Key Features

ESP8266 Processor – 80 MHz microcontroller with WiFi
4 MB Flash – Onboard flash memory
WiFi – Full 802.11 b/g/n client and access point support
TCP/IP Stack – Built-in networking with DNS support
Onboard Antenna – No external antenna required
NodeMCU Lua Firmware – Pre-programmed and ready to use
SMT Module – Large castellated pads for easy hand soldering

Ideal For

Custom PCB designs requiring WiFi connectivity
IoT and home automation projects
Embedded wireless applications

Note: This is the bare ESP-12S SMT module for advanced users. Additional components are needed for standalone operation — refer to the HUZZAH ESP8266 schematic for recommended support circuitry.

Resources

HUZZAH ESP8266 Schematic & Downloads

Jargon buster

Plain-language definitions for the technical terms used above.

Flash memory: Flash memory is non-volatile memory that retains stored data even when power is removed, and can be erased and rewritten in blocks. It lets data such as firmware, settings or saved records persist across power cycles.
IoT: Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
microcontroller: A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
PCB: A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.