root
64 lines
881 B
Markdown
64 lines
881 B
Markdown
# Wiring Overview
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## House Battery Power Distribution
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House Battery Positive
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├── 5A Fuse → ESP32 Controller
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├── 3A Fuse → 12V→5V Buck Converter
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├── 30A Fuse → Fridge Relay
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└── 30A Fuse → Starlink Relay
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House Battery Negative
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├── ESP32 Ground
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├── Buck Converter Ground
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├── Relay Grounds
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└── Sensor Grounds
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## Dashboard Power
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12V House Battery
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↓
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Buck Converter (5V)
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↓
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CAT5 Cable
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↓
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Pico Dashboard
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## Communications
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Pico
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↓
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UART over CAT5
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↓
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ESP32
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Backup:
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WiFi
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## Relay Control
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ESP32 Relay Output
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↓
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Bosch Relay Coil
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Bosch Relay Contacts
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↓
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Fridge / Starlink / Future Loads
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No high-current loads pass through the ESP32 relay board.
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## Temperature Sensors
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Single DS18B20 Bus
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Sensors:
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- Fridge Zone 1
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- Fridge Zone 2
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- Rear Seat Area
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- Outside Air
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Future:
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- Battery Compartment
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- Cabin Air
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- Water Tank
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