-if detector.board.any_coral_board:
-    from adafruit_blinka.microcontroller.generic_linux.sysfs_pwmout import PWMOut
-if detector.board.any_giant_board:
-    from adafruit_blinka.microcontroller.generic_linux.sysfs_pwmout import PWMOut
-if detector.board.any_beaglebone:
-    from adafruit_blinka.microcontroller.am335x.sysfs_pwmout import PWMOut
-if detector.board.binho_nova:
-    from adafruit_blinka.microcontroller.nova.pwmout import PWMOut
+elif "sphinx" in sys.modules:
+    pass
+elif detector.board.any_odroid_40_pin:
+    if detector.board.id in ("ODROID_C4", "ODROID_N2"):
+        from adafruit_blinka.microcontroller.amlogic.meson_g12_common.pulseio.PulseIn import (
+            PulseIn,
+        )
+else:
+    raise NotImplementedError("pulseio not supported for this board.")