Put module bindings inside of layers, not the other way around. Use IDs instead of strings for identifying modules. Update script.

model/serializeConfig.js

@@ -8,8 +8,8 @@ buffer.fill(0);
 var writer = BufferWriter(buffer);
 
 var uhkConfig = JSON.parse(fs.readFileSync('uhk-config.json'));
-var keyActions = uhkConfig.keymaps[0].modules[0].layers[0].keyActions;
+var keyActions = uhkConfig.keymaps[0].layers[0].modules[0].keyActions;
-
+console.log(keyActions)
 var ARRAY_LAST_ELEMENT_ID = 0;
 
 var KEY_ACTION_ID_KEYSTROKE_SCANCODE_FIRST        = 1;
@@ -61,10 +61,10 @@ function serializeKeyAction(keyAction) {
         case 'none':
             serializeNoneAction();
             break;
-        case 'key':
+        case 'keystroke':
             serializeKeystrokeAction(keyAction);
             break;
-        case 'dualRoleKey':
+        case 'dualRoleKeystroke':
             serializeDualRoleKeyAction(keyAction);
             break;
         case 'mouse':
@@ -76,8 +76,11 @@ function serializeKeyAction(keyAction) {
         case 'switchKeymap':
             serializeSwitchKeymapAction(keyAction);
             break;
+        case 'switchLayer':
+            serializeSwitchLayerAction(keyAction);
+            break;
         default:
-            throw "KeyAction doesn't have a valid actionType property!";
+            throw "KeyAction doesn't have a valid actionType property: " + keyAction.actionType;
     }
 }
 
@@ -137,5 +140,14 @@ function serializeSwitchKeymapAction(switchKeymapAction) {
     writer.uint8(switchKeymapAction.keymapId);
 }
 
+function serializeSwitchLayerAction(switchLayerAction) {
+    writer.uint8({
+        mod  : KEY_ACTION_ID_SWITCH_LAYER_MOD,
+        fn   : KEY_ACTION_ID_SWITCH_LAYER_FN,
+        mouse: KEY_ACTION_ID_SWITCH_LAYER_MOUSE
+    }[switchLayerAction]);
+    writer.uint8(0);
+}
+
 serializeKeyActions(keyActions);
 fs.writeFileSync('uhk-config.bin', buffer);

model/uhk-config.json

@@ -14,12 +14,14 @@
             "name": "QWERTY",
             "isDefault": true,
             "abbreviation": "QTY",
-            "modules": [
+            "layers": [
                 {
-                    "name": "uhkLeft",
+                    "modules": [
-                    "layers": [
                         {
-                            "pointerRole": "move",
+                            "id": 0,
+                            "pointerRoles": [
+                                "move"
+                            ],
                             "keyActions": [
                                 {
                                     "actionType": "none"
@@ -52,38 +54,28 @@
                                 }
                             ]
                         },
-                        {},
+                        {
-                        {},
+                            "id": 1
-                        {}
+                        },
+                        {
+                            "id": 2,
+                            "pointerRoles": [
+                                "scroll"
+                            ],
+                            "keyActions": []
+                        },
+                        {
+                            "id": 3,
+                            "pointerRoles": [
+                                "move"
+                            ],
+                            "keyActions": []
+                        }
                     ]
                 },
-                {
+                {},
-                    "name": "uhkRight"
+                {},
-                },
+                {}
-                {
-                    "name": "keyClusterLeft",
-                    "layers": [
-                        {
-                            "pointerRole": "scroll",
-                            "keyActions": []
-                        }
-                    ],
-                    "modLayer": {},
-                    "fnLayer": {},
-                    "mouseLayer": {}
-                },
-                {
-                    "name": "trackballRight",
-                    "layers": [
-                        {
-                            "pointerRole": "move",
-                            "keyActions": []
-                        }
-                    ],
-                    "modLayer": {},
-                    "fnLayer": {},
-                    "mouseLayer": {}
-                }
             ]
         },
         {