Adafruit Feather 32u4 FONA

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 32u4 FONA - our take on an 'all-in-one' Arduino-compatible + audio/sms/data capable cellular with built in USB and battery charging. Its an Adafruit Feather 32u4 with a FONA800 module , ready to rock! We have other boards and accessories in the Feather family, check'em out here. At the Feather 32u4's heart is at ATmega32u4 clocked at 8 MHz and at 3.3V logic, a chip setup we've had tons of experience with as it's the same as the Flora . This chip has 32K of flash and 2K of RAM, with built in USB so not only does it have a USB-to-Serial program & debug capability built in with no need for an FTDI-like chip, it can also act like a mouse, keyboard, USB MIDI device, etc.Since you'll be taking this on the road, we added a connector for any of our 3.7V Lithium polymer batteries and built in battery charging. A 500mAh+ Lipoly battery is required for use , it keeps the cellular module happy during the high current spikes. Plug the Feather into microUSB to charge at 500mA.Here's some handy specs! Like all Feather 32u4's you get:Measures 2.4" x 0.9" x 0.28" (61mm x 23mm x 7mm) without headers soldered inLight as a (large?) feather - 8.2 gramsATmega32u4 @ 8MHz with 3.3V logic/power3.3V regulator with 500mA peak current outputUSB native support, comes with USB bootloader and serial port debuggingYou also get tons of pins - 20 GPIO pinsHardware Serial, hardware I2C, hardware SPI support8 x PWM pins10 x analog inputsBuilt in 500mA lipoly charger with charging status indicator LEDPin #13 red LED for general purpose blinkingPower/en