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. While this chip has been very popular, its also been very difficult to use. Most of the low cost modules are not breadboard friendly, don't have an onboard 500mA 3.3V regulator or level shifting, and aren't CE or FCC emitter certified....UNTIL NOW!

The Adafruit HUZZAH ESP8266 breakout is what we designed to make working with this chip super easy and a lot of fun. We took a certified module with an onboard antenna, and plenty of pins, and soldered it onto our designed breakout PCBs. We added in:

  • Reset button,
  • User button that can also put the chip into bootloading mode,
  • Red LED you can blink,
  • Level shifting on the UART and reset pin,
  • 3.3V out, 500mA regulator (you'll want to assume the ESP8266 can draw up to 250mA so budget accordingly)
  • Two diode-protected power inputs (one for a USB cable, another for a battery)

Two parallel, breadboard-friendly breakouts on either side give you access to:

  • 1 x Analog input (1.0V max)
  • 9 x GPIO (3.3V logic), which can also be used for I2C or SPI
  • 2 x UART pins
  • 2 x 3-6V power inputs, reset, enable, LDO-disable, 3.3V output

One breakout at the end has an "FTDI" pinout so you can plug in an FTDI or console cable to upload software and read/write debugging information via the UART. When you're done with your coding, remove the cable, and this little module can be embeded into your project box.

Each module comes pre-loaded with NodeMCU's Lua interpreter (NodeMCU 0.9.5 build 20150318 / Lua 5.1.4 to be specific), you can run commands, and 'save' Lua programs directly to the module's Flash using a USB-Serial converter cable. But, if you'd like, you can skip Lua and go direct to using the Arduino IDE. Once you download the ESP8266 core, you can treat it just like a microcontroller+WiFi board, no other processors needed!

Each order comes with one assembled and tested HUZZAH ESP8266 breakout board, and a stick of 0.1" header that you can solder on and plug the breakout into a breadboard. A soldering iron and solder are required for that, and aren't included. Solderless breadboard also not included. You'll really want a USB-serial cable such as a USB console cable (good for Windows, not suggested for MacOSX users),  FTDI Friend (great for any OS), or FTDI cable (great for any OS)  to upload software to the HUZZAH ESP8266! Our essential tutorial has wiring, pinouts, assembly, downloads, and more!


You may get a blue or black module, they are identical.

Datasheets, PCB CAD files and Fritzing objects available in the tutorial downloads page.

Revision history: as of May 15, 2016 we have changed the power supply to run from a 6V DC max rather than 12V. At 12V the power supply would overheat anyways!

Adorable bite-sized WiFi microcontroller, at a price you like!
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Easily add support for Adafruit boards to Arduino v1.6.4!
How to compile and install MicroPython for the ESP8266 WiFi breakout!
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Build a simple home automation system & control it from anywhere!
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Set up one Huzzah to control another, anywhere on Earth!
Learn to love the stateful, low-bandwidth pubsub protocol.
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Make your toilet bowl glow with data from Adafruit IO!
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What is MicroPython, why would you use it?
Learn how to load MicroPython firmware on a development board.
Get your project online fast with ESP8266, Arduino, & Adafruit IO!
Program the 'Hello World' of hardware with MicroPython.
Learn a simple workflow for developing code on a MicroPython board.
Access a Python console over WiFi with the ESP8266!
Load Python modules that extend your code with new functionality!
Blink LEDs and read buttons with digital I/O and MicroPython!
Use ADC's, DAC's, and PWM outputs to control analog signals with MicroPython!
Talk to SPI devices with MicroPython!
Learn how to talk to I2C devices with MicroPython!
Learn how to use a microSD card to store code & data with MicroPython!
Decorate with MicroPython-powered holiday lights you control from a web page!
Learn how to use the LIS3DH accelerometer with CircuitPython!
Learn how to use the MPR121 capacitive touch sensing breakout with CircuitPython!


SKU AF-2471
Brand Adafruit

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