Parts 101296

ESP8266 ESP-12 WiFi Module

Name: ESP8266 ESP-12 WiFi Module
Brand: Soldered

MPN: 101296

Soldered

WiFi Modules - 802.11 ESP8266, ESP-12, wifi, module

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Overview

A compact WiFi module based on the ESP8266 family (ESP-12 variant) that adds 802.11 b/g/n connectivity to embedded designs. It exposes a UART interface plus general-purpose I/O for sensors and actuators and can run vendor AT firmware or be flashed with custom firmware. Widely used for low-cost IoT endpoints and rapid prototyping.

Why Choose This Part

Low cost and small form factor make it easy to add WiFi to embedded projects. Large community support and multiple firmware/toolchain options (AT firmware, Arduino core, NodeMCU, Espressif SDK) speed development. The module exposes UART and GPIOs for direct integration with existing microcontrollers or for standalone operation.

Applications

IoT sensor nodes

Connect temperature, humidity, or other sensors to cloud services over WiFi for telemetry and monitoring.

Smart home controllers

Drive relays, lights, or HVAC interfaces to integrate devices with home automation systems.

Serial-to-WiFi bridges

Provide network connectivity for legacy UART devices or microcontrollers without native WiFi.

Prototype and proof-of-concept hardware

Rapidly evaluate wireless features before designing a custom PCB with an integrated WiFi radio.

Remote logging and OTA updates

Send logs to remote servers and accept over-the-air firmware updates when running suitable firmware.

Getting Started

Use a USB-to-serial adapter and a 3.3V power supply to flash and interact with the module. Popular dev-board references include NodeMCU and Wemos D1 mini for easier USB connectivity during development. Tooling options include the Arduino core for ESP8266, Espressif SDK, and esptool.py for flashing; ensure proper handling of boot-mode pins (GPIO0, EN/CH_PD) and provide a stable 3.3V regulator with adequate decoupling.