# Plan 02 Summary - Header & Voltage Components

**Plan:** 02  
**Phase:** 01-foundation-dashboard  
**Completed:** 2026-03-13

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## Tasks Completed

### Task 1: VoltageDisplay Component
- Created `src/app/components/VoltageDisplay.tsx`:
  - Props: label, voltage, className
  - Displays voltage with one decimal place
  - Uses Zap icon from Lucide
  - Min-height 44px for touch targets

### Task 2: BatteryStatus Component
- Created `src/app/components/BatteryStatus.tsx`:
  - Props: voltage, threshold (default 12.0V), className
  - Shows color-coded status badge (HIGH/LOW)
  - Green for >= 12V, Red for < 12V
  - Touch-friendly (44px min)

### Task 3: Modernize Header Component
- Updated `src/app/components/Header.tsx`:
  - Imports and uses sensor store
  - Shows: logo, station ID, version, time, date
  - Shows: solar voltage, battery voltage with status
  - Shows: communication status (ASU/dBm/percentage)
  - Shows: login status
  - Clock updates every second with cleanup

### Task 4: Touch Target Verification
- All interactive elements have min-height 44px
- Verified in VoltageDisplay, BatteryStatus, Header

### Task 5: DashboardLayout Integration
- DashboardLayout already uses Header component
- Layout works correctly with sidebar

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## Files Created/Modified

| File | Status |
|------|--------|
| src/app/components/VoltageDisplay.tsx | Created |
| src/app/components/BatteryStatus.tsx | Created |
| src/app/components/Header.tsx | Modified |

---

## Component Usage

```tsx
// VoltageDisplay
<VoltageDisplay label="Solar" voltage={12.5} />

// BatteryStatus
<BatteryStatus voltage={12.5} threshold={12.0} />

// In Header
<VoltageDisplay label="Solar" voltage={data.voltage.solar} />
<BatteryStatus voltage={data.voltage.battery} />
```

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## Notes

- Components use Tailwind CSS classes
- Icons from Lucide React
- Touch targets meet 44px minimum requirement
- Status colors follow design guidelines (green/yellow/red)