# Hardware Status

Last Updated: 2026-06-03

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## Dashboard Hardware

### Raspberry Pi Pico 2 W

Status:
- Ordered

Purpose:
- Dashboard controller
- Touchscreen UI
- Audible alarms
- UART communications

Notes:
- Waiting for delivery

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### 3.5 Inch Touchscreen

Display Controller:
- ST7796S

Touch Controller:
- FT6336U

Status:
- Ordered

Purpose:
- Main dashboard display

Testing Required:
- Display initialization
- Touch functionality
- Performance testing

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### Active 5V Buzzer

Status:
- Ordered

Purpose:
- Audible alarms

Testing Required:
- Alarm volume
- Dashboard mounting location

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## Controller Hardware

### ESP32 2-Channel Relay Board

Status:
- On Hand

Purpose:
- Relay control
- Sensor collection
- Communications

Known Information:

GPIO16 = Relay Output 1
GPIO17 = Relay Output 2

Relay ON  = HIGH
Relay OFF = LOW

Testing Required:
- Verify relay operation
- Verify startup behavior

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## Communications Hardware

### CAT5 Cable

Status:
- On Hand

Purpose:
- Dashboard power
- UART communications
- Ignition sense

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### RS485 Modules

Status:
- Ordered

Purpose:
- Future fallback communication

Current Plan:
- Not used initially

Testing Required:
- Only if UART proves unreliable

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## Sensor Hardware

### DS18B20 Waterproof Sensors

Quantity:
- 4

Status:
- Ordered

Assignments:

Sensor 1
- Fridge Zone 1

Sensor 2
- Fridge Zone 2

Sensor 3
- Rear Seat Area

Sensor 4
- Outside Air

Testing Required:
- Address discovery
- Temperature validation

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## Power Hardware

### 12V To 5V Buck Converter

Status:
- Planned

Purpose:
- Dashboard power

Requirements:

Input:
- Vehicle 12V

Output:
- 5V

Recommended:
- 3A minimum

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### Bosch Relays

Status:
- Planned

Purpose:
- Starlink power
- Fridge power

Future:
- Inverter
- Camp lights

Requirements:
- 30A or 40A automotive relays

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### Fuse Block

Status:
- Planned

Purpose:
- Circuit protection

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## Future Hardware

### JBD / Xiaoxiang BMS

Status:
- Existing battery system

Purpose:
- Battery monitoring

Future Integration:
- BLE communications

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### ELM327

Status:
- Future

Purpose:
- OBD-II integration

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### GPS Module

Status:
- Future

Purpose:
- Vehicle tracking
- Trip logging

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## Bring-Up Checklist

ESP32

[ ] Verify relay outputs
[ ] Verify WiFi AP
[ ] Verify HTTP status endpoint
[ ] Verify DS18B20 support

Pico

[ ] Display test
[ ] Touch test
[ ] Buzzer test
[ ] UART communications

Vehicle

[ ] Install CAT5 run
[ ] Install buck converter
[ ] Install relays
[ ] Install sensors
[ ] Install dashboard enclosure

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## Notes

Current Communication Plan:

Primary:
- UART over CAT5

Backup:
- WiFi HTTP API

Fallback:
- RS485

Current UI Plan:

- Touchscreen only
- No physical buttons required

Current Logging Plan:

- No persistent logging planned
- Focus on live monitoring and alarms