Adafruit featherwing add ons for all feather boards adafruit 2926 the adafruit featherwing terminal block breakout kits are wider than the standard feather footprint to accommodate a row of screw in terminals on either side all the feather pins are brought out to the terminal blocks and to rows of pads next to a prototyping area adafruit even widened the board a bit further and added on board labels for the major signals such as i2c spi serial and power once you have soldered on the kit