Adafruit Feather 32u4 Bluefruit LE PWM Drivers The OLED and driver require

The OLED and driver require a 3

Their tutorial series shows you how to install the software

plus 4 or 5 control lines (12 pins minimum) or SPI mode with 4 or 5 SPI data/control lines (4 pins minimum) - not including the touch screen

the battery will slowly drain since the charge rate is less than the dis-charge rate

Adafruit Feather 32u4 Bluefruit LE PWM Drivers The OLED and driver requireThis is the Adafruit Feather 32u4 Bluefruit our take on an 'all in one' Arduino compatible + Bluetooth Low Energy with built in USB and battery charging. Its an Adafruit Feather 32u4 with a BTLE module, ready to rock! We have other boards in the Feather family, check'em out here. Bluetooth Low Energy is the hottest new low power, 2. 4GHz spectrum wireless protocol. In particular, its the only wireless protocol that you can use with iOS without needing