Feather HUZZAH with ESP8266 WiFi [PID:2821] - (AD13631)

Description:

Feather is the new development board from Adafruit, and like its namesake, it is thin, light, and lets you fly! We designed Feather to be a new standard for portable microcontroller cores.

This is the Adafruit Feather HUZZAH ESP8266, our take on an 'all-in-one' ESP8266 WiFi development board with built-in USB and battery charging. It's an ESP8266 WiFi module with all the extras you need, ready to go!

At the Feather HUZZAH's heart is an ESP8266 WiFi microcontroller clocked at 80 MHz and at 3.3 V logic. This microcontroller contains a Tensilica chip core as well as a full WiFi stack. You can program the microcontroller using the Arduino IDE for an easy-to-use IoT core. We wired up a high-quality SiLabs CP2104 USB-Serial chip that can upload code at a blistering 921600 baud for fast development time. It also has auto-reset so no fiddling with pins and reset button pressing. The CP2104 has much better driver support than the CH340 and will go to very high speeds without stability issues.

To make it easy to use for portable projects, we added a connector for any of our 3.7 V Lithium polymer batteries and built-in battery charging. You don't need a battery; it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, and then plug in the USB to recharge it. The Feather will automatically switch over to USB power when available.

Here are some handy specs!

• Measures 51 mm x 23 mm x 8 mm (2.0" x 0.9" x 0.28") without headers soldered in
• Light as a (large?) feather - 9.7 grams
• ESP8266 @ 80 MHz with 3.3 V logic/power
• 4 MB of FLASH (32 MBit)
• Built-in WiFi 802.11 b/g/n
• 3.3 V regulator with 500 mA peak current output
• Built-in CP2104 USB-Serial converter with 921600 max baud rate for fast uploading
• Auto-reset support for getting into bootload mode before firmware upload
• 9 x GPIO pins (can also be used as I²C and SPI)
• 1 x Analog input 1.0 V max
• Built-in 100 mA LiPoly charger with charging status indicator LED, can also cut a trace to disable the charger
• Pin #0 red LED for general purpose blinking. Pin #2 blue LED for bootloader debug & general purpose blinking
• Power/enable pin
• 4 mounting holes
• Reset button

Comes fully assembled and tested, with a USB interface that lets you quickly use it with the Arduino IDE or NodeMCU Lua. (It comes pre-programmed with the Lua interpreter.) We also toss in some header so you can solder it in for breadboard use. LiPoly battery and USB cable not included (but we do have lots of options in the shop if you'd like!).

Reference link