diff --git a/tools/pico_desktop_sim.py b/tools/pico_desktop_sim.py
new file mode 100644
index 0000000..43b2900
--- /dev/null
+++ b/tools/pico_desktop_sim.py
@@ -0,0 +1,77 @@
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "pico-dashboard"))
+
+from state.app_state import AppState
+from alarms.alarm_manager import AlarmManager
+from ui.dashboard_view_model import DashboardViewModel
+from ui.detail_view_models import (
+    BatteryViewModel,
+    TempsViewModel,
+    PowerViewModel,
+    SystemViewModel,
+)
+from ui.alarm_view_model import AlarmViewModel
+
+
+def main():
+    state = AppState()
+
+    state.update_from_status({
+        "timestamp": 12345,
+        "battery": {
+            "soc": 82,
+            "voltage": 13.2,
+            "current": -6.4,
+            "remaining_ah": 82,
+            "runtime_hours": 12.0,
+            "temperature_f": 76,
+        },
+        "temps": {
+            "fridge_zone_1": 34.5,
+            "fridge_zone_2": 36.0,
+            "rear_seat": 72.0,
+            "outside": 88.0,
+        },
+        "sensor_health": {
+            "fridge_zone_1": True,
+            "fridge_zone_2": True,
+            "rear_seat": True,
+            "outside": True,
+        },
+        "relays": {
+            "starlink": False,
+            "fridge": True,
+        },
+        "network": {
+            "uart_connected": True,
+            "wifi_enabled": True,
+        },
+    })
+
+    alarms = AlarmManager().evaluate(state)
+
+    print("\n=== DASHBOARD ===")
+    print(DashboardViewModel(state, alarms).as_dict())
+
+    print("\n=== BATTERY ===")
+    print(BatteryViewModel(state).as_dict())
+
+    print("\n=== TEMPERATURES ===")
+    for row in TempsViewModel(state).as_list():
+        print(row)
+
+    print("\n=== POWER ===")
+    print(PowerViewModel(state).as_dict())
+
+    print("\n=== SYSTEM ===")
+    print(SystemViewModel(state).as_dict())
+
+    print("\n=== ALARMS ===")
+    print(AlarmViewModel(alarms).as_list())
+
+
+if __name__ == "__main__":
+    main()