ESP8266 SMT Module / ESP-12S
Add Internet to your next project with an adorable, bite-sized WiFi microcontroller, at a price you like! The ESP8266 processor from Espressif is an 80 MHz microcontroller with a full WiFi front-end (both as client and access point) and TCP/IP stack with DNS support as well.
Comes with 4MB flash chip, ESP processory, and onboard antenna. These come pre-progammed with the NodeMCU Lua firmware
The ESP8266 is a highly integrated chip designed for the needs of a new connected world. It offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or to offload all Wi-Fi networking functions from another application processor. It has powerful on-board processing and storage capabilities that allow it to be integrated with the sensors and other application specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. Its high degree of on-chip integration allows for minimal external circuitry, and the entire solution, including front-end module, is designed to occupy minimal PCB area.
The ESP8266 combines an 80Mhz 32 bit processor with 802.11 a, b, g and n support in both station and router modes at a fantastic price point, enabling a pervasive, low-cost Internet of Things. It comes in various different flavors and while oddWires hasn’t tried them all we have tried a lot. We decided to pick the latest version of the NODEMCU, the V2. The primary difference between the V2 and the V1 is the use of the ESP-12 module, which exposes GPIO 9 and 10 - another two GPIO pins come in very handy.
We also feel it is timely to offer this module as the Arduino IDE now supports the ESP8266. This is much easier to use than programming with other IDEs, although if you wish you can use the LUA scripting language. Pretty much all of the base Arduino functions are complete usable including, Wi-Fi, webserver, the GPIO pins, interrupts, EEPROM, Wire library (I2C), SPI, timers using Ticker, Servo, DS1820 temperature sensors, DHT11 sensors, MQTT, real-time clocks and others.
ESP8266 modules can be tricky to flash, but it’s a pretty seamless process using the Arduino IDE as, most of the time, the boards need no intervention to upload your sketch. Occasionally you have to hit flash/reset to upload.
Open-source, Interactive, Programmable, Low cost, Simple, Smart, WI-FI enabled
ESP8266 Arduino: https://github.com/esp8266/Arduino
All prices are in USD.