diff --git a/v3/skyloong/dt40/dt40.json b/v3/skyloong/dt40/dt40.json
new file mode 100644
index 0000000000..6673649573
--- /dev/null
+++ b/v3/skyloong/dt40/dt40.json
@@ -0,0 +1,184 @@
+
+{
+  "name": "Skyloong DT40",
+  "vendorId": "0x1EA7",
+  "productId": "0x6040",
+  "keycodes": ["qmk_lighting"],
+  "menus": [
+      {
+        "label": "Lighting",
+        "content": [
+          {
+            "label": "Backlight",
+            "content": [
+              {
+                "label": "Brightness",
+                "type": "range",
+                "options": [0, 255],
+                "content": ["id_qmk_rgb_matrix_brightness", 3, 1]
+              },
+              {
+                "label": "Effect",
+                "type": "dropdown",
+                "content": ["id_qmk_rgb_matrix_effect", 3, 2],
+                "options": [
+                  "0-All Off",
+                  "1-solid_color",
+                  "2-alphas_mods",
+                  "3-gradient_up_down",
+                  "4-gradient_left_right",
+                  "5-breathing",
+                  "6-band_sat",
+                  "7-band_pinwheel_sat",
+                  "8-band_pinwheel_val",
+                  "9-band_spiral_sat",
+                  "10-band_spiral_val",
+                  "11-cycle_all",
+                  "12-cycle_left_right",
+                  "13-cycle_up_down",
+                  "14-cycle_out_in",
+                  "15-cycle_out_in_dual",
+                  "16-rainbow_moving_chevron",
+                  "17-cycle_pinwheel",
+                  "18-cycle_spiral",
+                  "19-dual_beacon",
+                  "20-raindrops",
+                  "jellybean_raindrops",
+                  "22-hue_breathing",
+                  "23-hue_pendulum",
+                  "24-hue_wave",
+                  "25-pixel_rain",
+                  "26-pixel_fractal"
+                ]
+              },
+              {
+                "showIf": "{id_qmk_rgb_matrix_effect} != 0",
+                "label": "Effect Speed",
+                "type": "range",
+                "options": [0, 255],
+                "content": ["id_qmk_rgb_matrix_effect_speed", 3, 3]
+              },
+              {
+                "showIf": "{id_qmk_rgb_matrix_effect} != 0 && {id_qmk_rgb_matrix_effect} != 21",
+                "label": "Color",
+                "type": "color",
+                "content": ["id_qmk_rgb_matrix_color", 3, 4]
+              }
+            ]
+          }
+        ]
+      }
+  ],
+  "matrix": {"rows": 4, "cols": 11},
+  "layouts": {
+    "keymap": [
+      [
+        {
+          "c": "#777777",
+          "w": 1.5
+        },
+        "0,0",
+        {
+          "c": "#cccccc"
+        },
+        "0,1",
+        "0,2",
+        "0,3",
+        "0,4",
+        "0,5",
+        "0,6",
+        "0,7",
+        "0,8",
+        "0,9",
+        "1,9",
+        {
+          "c": "#777777",
+          "w": 1.5
+        },
+        "0,10"
+      ],
+      [
+        {
+          "w": 1.75
+        },
+        "1,0",
+        {
+          "c": "#cccccc"
+        },
+        "1,1",
+        "1,2",
+        "1,3",
+        "1,4",
+        "1,5",
+        "1,6",
+        "1,7",
+        "3,5",
+        "1,8",
+        {
+          "c": "#777777",
+          "w": 2.25
+        },
+        "1,10"
+      ],
+      [
+        {
+          "w": 2.25
+        },
+        "2,0",
+        {
+          "c": "#cccccc"
+        },
+        "2,1",
+        "2,2",
+        "2,3",
+        "2,4",
+        "2,5",
+        "2,6",
+        "2,7",
+        {
+          "c": "#777777",
+          "w": 1.75
+        },
+        "2,8",
+        "2,9",
+        {
+          "c": "#aaaaaa"
+        },
+        "2,10"
+      ],
+      [
+        {
+          "c": "#777777",
+          "w": 1.25
+        },
+        "3,0",
+        "3,3",
+        "3,1",
+        {
+          "c": "#aaaaaa",
+          "w": 1.25
+        },
+        "3,2",
+        {
+          "c": "#777777",
+          "w": 3
+        },
+        "3,4",
+        {
+          "c": "#aaaaaa",
+          "w": 1.25
+        },
+        "3,6",
+        {
+          "c": "#777777",
+          "w": 1.25
+        },
+        "3,7",
+        "3,8",
+        "3,9",
+        "3,10"
+      ]
+    ]
+  }
+}
+