These featherweight Adafruit Feather development boards will really have you flying. Lightweight, super-thin, and stackable for multiple functionality, they are perfect prototyping companions. Feather boards can operate with battery power, but have a microUSB port for PSU connection. The Adafruit Feather Cortex-M0 Adalogger features the ATSAMD21G18 ARM Cortex M0 processor, and has a massive 256K FLASH memory and 32K of RAM. Used alongside the Arduino IDE it will speed up your developing and processing no end.