Add project documentation

2026-06-03 01:00:39 -06:00
parent eff60ed9d2
commit ac0112ca66
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+# Wiring Overview
+
+## House Battery Power Distribution
+
+House Battery Positive
+├── 5A Fuse → ESP32 Controller
+├── 3A Fuse → 12V→5V Buck Converter
+├── 30A Fuse → Fridge Relay
+└── 30A Fuse → Starlink Relay
+
+House Battery Negative
+├── ESP32 Ground
+├── Buck Converter Ground
+├── Relay Grounds
+└── Sensor Grounds
+
+## Dashboard Power
+
+12V House Battery
+↓
+Buck Converter (5V)
+↓
+CAT5 Cable
+↓
+Pico Dashboard
+
+## Communications
+
+Pico
+↓
+RS-485
+↓
+ESP32
+
+Backup:
+WiFi
+
+## Relay Control
+
+ESP32 Relay Output
+↓
+Bosch Relay Coil
+
+Bosch Relay Contacts
+↓
+Fridge / Starlink / Future Loads
+
+No high-current loads pass through the ESP32 relay board.
+
+## Temperature Sensors
+
+Single DS18B20 Bus
+
+Sensors:
+- Fridge Zone 1
+- Fridge Zone 2
+- Rear Seat Area
+- Outside Air
+
+Future:
+- Battery Compartment
+- Cabin Air
+- Water Tank