diff --git a/v3/ploopyco/trackball/trackball_madromys.json b/v3/ploopyco/trackball/trackball_madromys.json
new file mode 100644
index 0000000000..d7a5b4beca
--- /dev/null
+++ b/v3/ploopyco/trackball/trackball_madromys.json
@@ -0,0 +1,49 @@
+{
+  "name": "Ploopy Adept Trackball (Madromys)",
+  "vendorId": "0x5043",
+  "productId": "0x5C47",
+  "customKeycodes": [
+    {"name": "DPI Config", "title": "DPI Config", "shortName": "DPI"},
+    {"name": "Drag Scroll", "title": "Drag Scroll", "shortName": "DragScl"}
+  ],
+  "matrix": {"rows": 1, "cols": 6},
+  "layouts": {
+    "keymap": [
+      [
+        {
+          "h": 2
+        },
+        "0,1",
+        {
+          "x": 0.25,
+          "h": 1.25
+        },
+        "0,2",
+        {
+          "x": 0.25,
+          "h": 1.25
+        },
+        "0,3",
+        {
+          "x": 0.25,
+          "h": 2
+        },
+        "0,4"
+      ],
+      [
+        {
+          "y": 1.25,
+          "w": 1.75,
+          "h": 2
+        },
+        "0,0",
+        {
+          "x": 1.25,
+          "w": 1.75,
+          "h": 2
+        },
+        "0,5"
+      ]
+    ]
+  }
+}