A basic 2x2 matrix that can auto-flash to a Feather with a compatible bootloader

boards/klardotsh/twotwo_matrix_feather.py

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+import board
+import time
+
+from kmk.circuitpython.matrix import MatrixScanner
+from kmk.common.consts import DiodeOrientation
+from kmk.common.keymap import Keymap
+
+
+if __name__ == '__main__':
+    cols = (board.A4, board.A5)
+    rows = (board.D27, board.A6)
+
+    matrix = MatrixScanner(
+        cols=cols, rows=rows,
+        diode_orientation=DiodeOrientation.COLUMNS,
+    )
+
+    keymap = Keymap([
+        ['A', 'B'],
+        ['C', 'D'],
+    ])
+
+    while True:
+        keymap.parse(matrix.raw_scan())
+        # Yield to the controller to allow things like the REPL to take over
+        time.sleep(0.001)