diff --git a/boxes/generators/atreus21.py b/boxes/generators/atreus21.py
new file mode 100644
index 0000000..f426e6a
--- /dev/null
+++ b/boxes/generators/atreus21.py
@@ -0,0 +1,196 @@
+"""Generator for a split atreus keyboard."""
+
+from copy import deepcopy
+
+from boxes import Boxes, Color, holeCol, restore, boolarg
+from boxes.edges import FingerJointSettings
+
+
+class Atreus21(Boxes):
+    """Generator for a split atreus keyboard."""
+    ui_group = 'Misc'
+    btn_size = 15.6
+    btn_outer = btn_size + 3.4
+    border = 6
+
+    row_offsets=[3, 6, 11, 5, 0, btn_size * .5]
+    row_keys=[4, 4, 4, 4, 4, 1]
+
+    def __init__(self):
+        super().__init__()
+        self.argparser.add_argument(
+            '--top1_thickness', action='store', type=float, default=1.5,
+            help=('thickness of the button hold layer, cherry like switches '
+                  'need 1.5mm or smaller to snap in')
+        )
+        self.argparser.add_argument(
+            '--top2_enable', action='store', type=boolarg, default=False,
+            help=('enables another top layer that can hold CPG151101S11 '
+                  'sockets')
+        )
+        self.argparser.add_argument(
+            '--top2_thickness', action='store', type=float, default=1.5,
+            help=('thickness of the hotplug layer, CPG151101S11 sockets '
+                  'need 1.2mm to 1.5mm')
+        )
+        self.addSettingsArgs(FingerJointSettings, surroundingspaces=1)
+
+    def render(self):
+        """Renders the keypad."""
+        # deeper edge for top to add multiple layers
+        deep_edge = deepcopy(self.edges['f'].settings)
+        deep_edge.thickness = self.thickness + self.top1_thickness
+        if self.top2_enable:
+            deep_edge.thickness += self.top2_thickness
+        deep_edge.edgeObjects(self, 'gGH', True)
+
+        self.moveTo(10, 30)
+        case_x, case_y = self._case_x_y()
+
+        self.hole(0, 0, d=0.7)
+
+        for reverse in [False, True]:
+            # keyholder
+            self.outer()
+            self.half(reverse=reverse)
+            self.holes()
+            self.moveTo(case_x + 13)
+
+            # support
+            self.outer()
+            self.half(self.support, reverse=reverse)
+            self.holes()
+            self.moveTo(-case_x - 13, case_y + 13)
+
+            # hotplug
+            self.outer()
+            self.half(self.hotplug, reverse=reverse)
+            self.holes()
+            self.moveTo(case_x + 13)
+
+            # border
+            self.outer()
+            self.rim()
+            self.holes()
+            self.moveTo(-case_x - 13, case_y + 13)
+
+
+    def holes(self):
+        case_x, case_y = self._case_x_y()
+        self.hole(-1.5, -1.5, d=3)
+        self.hole(case_x + 1.5, -1.5, d=3)
+        self.hole(-1.5, case_y + 1.5, d=3)
+        self.hole(case_x + 1.5, case_y + 1.5, d=3)
+
+    def micro(self):
+        x = 17.9
+        y = 33
+        b = self.border
+        case_x, case_y = self._case_x_y()
+        self.rectangularHole(
+            x * -.5 + case_x + b * .5,
+            y * -.5 + case_y + b * .5,
+            x, y
+        )
+
+    def rim(self):
+        s = 5
+        x, y = self._case_x_y()
+        self.moveTo(x * .5, y * .5)
+        self.rectangularHole(0, 0, x, y, 5)
+        self.moveTo(x * -.5, y * -.5)
+
+    def outer(self):
+        x, y = self._case_x_y()
+        b = self.border
+        self.moveTo(0, -b)
+        corner = [90, b]
+        self.polyline(*([x, corner, y, corner] * 2))
+        self.moveTo(0, b)
+    
+    def half(self, cb=None, reverse=False):
+        row_offsets=self.row_offsets
+        row_keys=self.row_keys
+        scheme = list(zip(row_offsets, row_keys))
+        if reverse:
+            scheme.reverse()
+        for offset, keys in scheme:
+            self.moveTo(0, offset)
+            self.key_row(keys, cb)
+            self.moveTo(self.btn_outer)
+            self.moveTo(0, -offset)
+
+        total_moved_rows = len(row_offsets) * (self.btn_outer)
+        self.moveTo(total_moved_rows * -1, 0)
+
+    def key_row(self, n, hole_cb=None):
+        """Callback for the key holes."""
+        if hole_cb == None:
+            hole_cb = self.key
+        for _ in range(n):
+            hole_cb()
+        self.moveTo(0, -n * (self.btn_outer))
+
+    def support(self):
+        btn = [11.6, (-90, 2)] * 4
+        self.set_source_color(Color.BLUE)
+        self.moveTo(0, 2, 90)
+        self.polyline(*btn)
+        self.moveTo(-2, 0, 270)
+        self.moveTo(0, self.btn_outer)
+        self.set_source_color(Color.BLACK)
+
+    def hotplug(self):
+        self.moveTo(7.8 , 7.8)
+        self.hole(0, 0, d=4)
+        self.hole(1.27 * -3, 1.27 * 2, d=2.9)
+        self.hole(1.27 * 2, 1.27 * 4, d=2.9)
+
+        # pcb mounts
+        self.hole(1.27 * -4, 0, d=1.7)
+        self.hole(1.27 * 4, 0, d=1.7)
+
+        self.moveTo(-7.8, -7.8)
+        self.moveTo(0, self.btn_outer)
+
+    def key(self):
+        self.set_source_color(Color.BLUE)
+
+        # draw clock wise to work with burn correction
+        btn_half_side = [0.98, 90, 0.81, -90, 3.5, -90, 0.81, 90, 2.505]
+        btn_full_side = [*btn_half_side, 0, *btn_half_side[::-1]]
+        btn = [*btn_full_side, -90] * 4
+
+        self.moveTo(0.81, 0.81, 90)
+        self.polyline(*btn)
+        self.moveTo(0, 0, 270)
+        self.moveTo(-0.81, -0.81)
+        self.moveTo(0, self.btn_outer)
+
+        self.set_source_color(Color.BLACK)
+
+    # stolen form electronics-box
+    def wallx_cb(self):
+        """Callback for triangle holes on x-side."""
+        x, _ = self._get_x_y()
+        t = self.thickness
+        self.fingerHolesAt(0, self.h - 1.5 * t, self.triangle, 0)
+        self.fingerHolesAt(x, self.h - 1.5 * t, self.triangle, 180)
+
+    # stolen form electronics-box
+    def wally_cb(self):
+        """Callback for triangle holes on y-side."""
+        _, y = self._get_x_y()
+        t = self.thickness
+        self.fingerHolesAt(0, self.h - 1.5 * t, self.triangle, 0)
+        self.fingerHolesAt(y, self.h - 1.5 * t, self.triangle, 180)
+
+    # get case sizes
+    def _case_x_y(self):
+        x = len(self.row_offsets) * self.btn_outer - 4
+        y = sum([
+            max(self.row_keys) * self.btn_outer,  # total button sizes
+            max(self.row_offsets),  # offset of highest row
+            -4,
+        ])
+        return x, y
diff --git a/static/samples/Atreus21-thumb.jpg b/static/samples/Atreus21-thumb.jpg
new file mode 100644
index 0000000..9bafb98
Binary files /dev/null and b/static/samples/Atreus21-thumb.jpg differ
diff --git a/static/samples/Atreus21.jpg b/static/samples/Atreus21.jpg
new file mode 100644
index 0000000..fc9dc08
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diff --git a/static/samples/samples.sha256 b/static/samples/samples.sha256
index 8cd589e..a518e16 100644
--- a/static/samples/samples.sha256
+++ b/static/samples/samples.sha256
@@ -43,3 +43,4 @@ a54006acfe9d334bbea67ef30204a92702aa9436bb427d69864845c48a22d774  ../static/samp
 c8b114b57df7fc7bef7c80ee608dfa33ec6853c42a7a1a8c78615320d420ffeb  ../static/samples/Console2.jpg
 38d3a63f9332d67ffc7c7259e3145a667fc742b70656dc81d670481205a4e60d  ../static/samples/Console2-panel-detail.jpg
 39d5adbf160eb0a592307b94bc84906cd671dccb8870987b47a8440570c43ee7  ../static/samples/Console2-backwall-detail.jpg
+0d2e82f9f08cff48edf678b873f09e8aa28b729feebd0c2a0011c77f330ac7c0  ../static/samples/Atreus21.jpg