diff --git a/kmk/common/event_defs.py b/kmk/common/event_defs.py
index 69bfd8a..e87a628 100644
--- a/kmk/common/event_defs.py
+++ b/kmk/common/event_defs.py
@@ -9,6 +9,9 @@ KEY_DOWN_EVENT = const(2)
 INIT_FIRMWARE_EVENT = const(3)
 NEW_MATRIX_EVENT = const(4)
 HID_REPORT_EVENT = const(5)
+KEYCODE_UP_EVENT = const(6)
+KEYCODE_DOWN_EVENT = const(7)
+MACRO_COMPLETE_EVENT = const(8)
 
 logger = logging.getLogger(__name__)
 
@@ -39,6 +42,28 @@ def key_down_event(row, col):
     }
 
 
+def keycode_up_event(keycode):
+    '''
+    Press a key by Keycode object, bypassing the keymap. Used mostly for
+    macros.
+    '''
+    return {
+        'type': KEYCODE_UP_EVENT,
+        'keycode': keycode,
+    }
+
+
+def keycode_down_event(keycode):
+    '''
+    Release a key by Keycode object, bypassing the keymap. Used mostly for
+    macros.
+    '''
+    return {
+        'type': KEYCODE_DOWN_EVENT,
+        'keycode': keycode,
+    }
+
+
 def new_matrix_event(matrix):
     return {
         'type': NEW_MATRIX_EVENT,
@@ -52,6 +77,13 @@ def hid_report_event():
     }
 
 
+def macro_complete_event(macro):
+    return {
+        'type': MACRO_COMPLETE_EVENT,
+        'macro': macro,
+    }
+
+
 def matrix_changed(new_matrix):
     def _key_pressed(dispatch, get_state):
         state = get_state()
@@ -94,4 +126,12 @@ def matrix_changed(new_matrix):
                 except ImportError:
                     logger.warning('Tried to reset to bootloader, but not supported on this chip?')
 
+        while get_state().macros_pending:
+            macro = get_state().macros_pending[0]
+
+            for event in macro():
+                dispatch(event)
+
+            dispatch(macro_complete_event(macro))
+
     return _key_pressed
diff --git a/kmk/common/internal_state.py b/kmk/common/internal_state.py
index ce5962b..2d47807 100644
--- a/kmk/common/internal_state.py
+++ b/kmk/common/internal_state.py
@@ -4,9 +4,11 @@ import sys
 from kmk.common.consts import DiodeOrientation
 from kmk.common.event_defs import (HID_REPORT_EVENT, INIT_FIRMWARE_EVENT,
                                    KEY_DOWN_EVENT, KEY_UP_EVENT,
-                                   NEW_MATRIX_EVENT)
+                                   KEYCODE_DOWN_EVENT, KEYCODE_UP_EVENT,
+                                   MACRO_COMPLETE_EVENT, NEW_MATRIX_EVENT)
 from kmk.common.internal_keycodes import process_internal_key_event
 from kmk.common.keycodes import FIRST_KMK_INTERNAL_KEYCODE, Keycodes
+from kmk.macros import KMKMacro
 
 
 class ReduxStore:
@@ -52,6 +54,7 @@ class ReduxStore:
 class InternalState:
     modifiers_pressed = frozenset()
     keys_pressed = frozenset()
+    macros_pending = []
     keymap = []
     row_pins = []
     col_pins = []
@@ -133,6 +136,20 @@ def kmk_reducer(state=None, action=None, logger=None):
             matrix=action['matrix'],
         )
 
+    if action['type'] == KEYCODE_UP_EVENT:
+        return state.update(
+            keys_pressed=frozenset(
+                key for key in state.keys_pressed if key != action['keycode']
+            ),
+        )
+
+    if action['type'] == KEYCODE_DOWN_EVENT:
+        return state.update(
+            keys_pressed=(
+                state.keys_pressed | {action['keycode']}
+            ),
+        )
+
     if action['type'] == KEY_UP_EVENT:
         row = action['row']
         col = action['col']
@@ -144,6 +161,14 @@ def kmk_reducer(state=None, action=None, logger=None):
         if not changed_key:
             return state
 
+        if isinstance(changed_key, KMKMacro):
+            if changed_key.keyup:
+                return state.update(
+                    macros_pending=state.macros_pending + [changed_key.keyup],
+                )
+
+            return state
+
         newstate = state.update(
             keys_pressed=frozenset(
                 key for key in state.keys_pressed if key != changed_key
@@ -166,6 +191,14 @@ def kmk_reducer(state=None, action=None, logger=None):
         if not changed_key:
             return state
 
+        if isinstance(changed_key, KMKMacro):
+            if changed_key.keydown:
+                return state.update(
+                    macros_pending=state.macros_pending + [changed_key.keydown],
+                )
+
+            return state
+
         newstate = state.update(
             keys_pressed=(
                 state.keys_pressed | {changed_key}
@@ -196,6 +229,14 @@ def kmk_reducer(state=None, action=None, logger=None):
     if action['type'] == HID_REPORT_EVENT:
         return state
 
+    if action['type'] == MACRO_COMPLETE_EVENT:
+        return state.update(
+            macros_pending=[
+                m for m in state.macros_pending
+                if m != action['macro']
+            ],
+        )
+
     # On unhandled events, log and do not mutate state
     logger.warning('Unhandled event! Returning state unmodified.')
     return state
diff --git a/kmk/macros/__init__.py b/kmk/macros/__init__.py
new file mode 100644
index 0000000..a6cc1d9
--- /dev/null
+++ b/kmk/macros/__init__.py
@@ -0,0 +1,10 @@
+class KMKMacro:
+    def __init__(self, keydown=None, keyup=None):
+        self.keydown = keydown
+        self.keyup = keyup
+
+    def on_keydown(self):
+        return self.keydown() if self.keydown else None
+
+    def on_keyup(self):
+        return self.keyup() if self.keyup else None
diff --git a/kmk/macros/simple.py b/kmk/macros/simple.py
new file mode 100644
index 0000000..62c3cff
--- /dev/null
+++ b/kmk/macros/simple.py
@@ -0,0 +1,14 @@
+from kmk.common.event_defs import (hid_report_event, keycode_down_event,
+                                   keycode_up_event)
+from kmk.macros import KMKMacro
+
+
+def simple_key_sequence(seq):
+    def _simple_key_sequence():
+        for key in seq:
+            yield keycode_down_event(key)
+            yield hid_report_event()
+            yield keycode_up_event(key)
+            yield hid_report_event()
+
+    return KMKMacro(keydown=_simple_key_sequence)
diff --git a/kmk/micropython/pyb_hid.py b/kmk/micropython/pyb_hid.py
index a4a9526..1d6eb72 100644
--- a/kmk/micropython/pyb_hid.py
+++ b/kmk/micropython/pyb_hid.py
@@ -73,7 +73,6 @@ class HIDHelper:
                 # device, or keys will get stuck (mostly when releasing
                 # media/consumer keys)
                 self.send()
-                delay(10)
 
             self.report_device[0] = needed_reporting_device
 
@@ -99,6 +98,17 @@ class HIDHelper:
         self.logger.debug('Sending HID report: {}'.format(self._evt))
         self._hid.send(self._evt)
 
+        # Without this delay, events get clobbered and you'll likely end up with
+        # a string like `heloooooooooooooooo` rather than `hello`. This number
+        # may be able to be shrunken down. It may also make sense to use
+        # time.sleep_us or time.sleep_ms or time.sleep (platform dependent)
+        # on non-Pyboards.
+        #
+        # It'd be real awesome if pyb.USB_HID.send/recv would support
+        # uselect.poll or uselect.select to more safely determine when
+        # it is safe to write to the host again...
+        delay(10)
+
         return self
 
     def send_string(self, message):
@@ -128,13 +138,6 @@ class HIDHelper:
             self.add_key(kc)
             self.send()
 
-            # Without this delay, events get clobbered and you'll likely end up with
-            # a string like `heloooooooooooooooo` rather than `hello`. This number
-            # may be able to be shrunken down. It may also make sense to use
-            # time.sleep_us or time.sleep_ms or time.sleep (platform dependent)
-            # on non-Pyboards.
-            delay(10)
-
             # Release all keys or we'll forever hold whatever the last keyadd was
             self.clear_all()
             self.send()
diff --git a/user_keymaps/klardotsh/threethree_matrix_pyboard.py b/user_keymaps/klardotsh/threethree_matrix_pyboard.py
index 324b10c..dd62898 100644
--- a/user_keymaps/klardotsh/threethree_matrix_pyboard.py
+++ b/user_keymaps/klardotsh/threethree_matrix_pyboard.py
@@ -3,6 +3,7 @@ import machine
 from kmk.common.consts import DiodeOrientation
 from kmk.common.keycodes import KC
 from kmk.entrypoints.handwire.pyboard import main
+from kmk.macros.simple import simple_key_sequence
 
 p = machine.Pin.board
 cols = (p.X10, p.X11, p.X12)
@@ -10,6 +11,21 @@ rows = (p.X1, p.X2, p.X3)
 
 diode_orientation = DiodeOrientation.COLUMNS
 
+MACRO_TEST_STRING = simple_key_sequence([
+    KC.LSHIFT(KC.H),
+    KC.E,
+    KC.L,
+    KC.L,
+    KC.O,
+
+    KC.SPACE,
+
+    KC.LSHIFT(KC.K),
+    KC.LSHIFT(KC.M),
+    KC.LSHIFT(KC.K),
+    KC.EXCLAIM,
+])
+
 keymap = [
     [
         [KC.MO(1), KC.GESC, KC.RESET],
@@ -24,6 +40,6 @@ keymap = [
     [
         [KC.VOLU, KC.MUTE, KC.Z],
         [KC.TRNS, KC.PIPE, KC.MEDIA_PLAY_PAUSE],
-        [KC.VOLD, KC.P, KC.Q],
+        [KC.VOLD, KC.P, MACRO_TEST_STRING],
     ],
 ]