Adafruit featherwing add ons for all feather boards adafruit 2900 the adafruit featherwing 128 x 32 oled add ons give any feather main board a 128 x 32 monochrome oled display with 3 x user push buttons all this takes just the 2 x i2c signals plus 2 x power lines the oled displays have individual led pixels which generate their own light so theres no backlight and very high contrast even though the displays are only 25mm diagonally theyre very clear and crisp and the buttons let you cre