Adafruit HUZZAH ESP8266 Breakout

The Adafruit HUZZAH ESP8266 Breakout makes adding Wi-Fi to your project easy and affordable. It’s built around Espressif’s 80 MHz ESP8266 microcontroller with full TCP/IP stack and Wi-Fi support — both client and access point modes.

Add Internet to your next project with an adorable, bite-sized Wi-Fi microcontroller, at a price you like! The ESP8266 processor from Espressif is an 80 MHz microcontroller with a full Wi-Fi front-end (both as client and access point) and TCP/IP stack with DNS support as well. While this chip has been very popular, it's 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!

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 embedded into your project box.

Each module comes preloaded 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+Wi-Fi 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, solderless breadboard and solder are required for that and aren't 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! 

Features

• 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 Analogue 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

Resources

• Datasheet
• Using NodeMCU Lua
• Arduino IDE Guide

Revision History

• • As of May 10, 2023 We have updated this PCB with Adafruit Pinguin to make a lovely and legible silkscreen - you may get the new PCB or the older version with vector fonts - both are identical other than the fancy silkscreen.

Package Contents

• 1x Adafruit HUZZAH ESP8266 Breakout
• 1x stick of 0.1" headers