Complete guide for using OpenGrowBox Home Assistant GUI to manage your grow operations.
- Open Home Assistant
- Navigate to HACS (Home Assistant Community Store)
- Search for "OpenGrowBox"
- Click "Download" and follow installation wizard
- Restart Home Assistant
- Click "OpenGrowBox" in Home Assistant sidebar
- Select your grow room (e.g., "flower tent", "veg tent", "drying room")
- Configure sensors and devices
- Set your grow parameters
The dashboard is organized into several pages:
- 🏠 Home: Quick overview and main controls
- 📊 Dashboard: Detailed metrics and charts
- 📖 Grow Book: Grow logs, notes, and tracking
- ⚙️ Settings: Configuration and preferences
Use the bottom navigation bar to switch between pages.
The dashboard shows:
- Current room status
- Key environmental metrics (temperature, humidity, VPD)
- Device states
- Recent activity
Temperature
- Displayed in Celsius
- Color-coded by status:
- 🟢 Green: Optimal (18-25°C)
- 🟡 Yellow: Warning (15-30°C)
- 🔴 Red: Critical (outside range)
Humidity
- Displayed as percentage (%)
- Color-coded by status:
- 🟢 Green: Optimal (40-60%)
- 🟡 Yellow: Warning (30-70%)
- 🔴 Red: Critical (outside range)
VPD (Vapor Pressure Deficit)
- Displayed in kPa
- Optimal range: 1.1-1.35 kPa
- Critical for plant transpiration
CO2
- Displayed in ppm
- Optimal for growth: 800-1200 ppm
- Warning levels: <400 or >1500 ppm
History Charts
- Click on any sensor card to view historical data
- See trends over time
- Identify patterns and issues
Shows all controllable devices in your grow room:
- Lights: On/Off and dimming
- Fans: Exhaust and intake
- Climate: Heaters, coolers, humidifiers, dehumidifiers
- Pumps: Water and nutrient pumps
Controls:
- Toggle devices on/off
- Adjust brightness (for lights)
- Set duty cycles (for fans)
- View current status
- Room: Shows only devices in the currently selected room
- All: Shows all devices from all rooms
Use the toggle at the top of the device card to switch views.
Different modes for controlling devices:
VPD Perfection
- Automatically adjusts devices to maintain optimal VPD
- Best for advanced growers
PID Control
- Proportional-Integral-Derivative control algorithm
- Precise climate management
MPC Control
- Model Predictive Control
- Advanced climate prediction
Manual
- Full manual control of all devices
Each sensor type has its own card:
- Temperature: Air temperature sensors
- Humidity: Relative humidity sensors
- VPD: Vapor pressure deficit (calculated)
- CO2: Carbon dioxide levels
- Dew Point: Calculated from temp/humidity
- Duty Cycle: Fan and pump duty cycles
- Soil/Medium: Moisture, EC, pH (if using sensors)
- Light: Intensity, PPFD, DLI
Green (✅): Within optimal range
Yellow (
Sensors can be filtered by room:
- Room: Shows sensors for current room only
- All: Shows all sensors from all rooms
Use the toggle at the top of each sensor section.
- Tracks days in current grow cycle
- Displays current grow stage
- Shows total grow duration
Real-time event logging for your grow operations:
Log Types:
- 🌡️ Sensors: Environmental readings
- 🎛️ Devices: Device state changes
- 🎯 Actions: Control actions taken
- 💧 Hydro: Hydroponic system events
- 🎛️ PID: Controller events
- 🌱 Medium: Sensor readings from medium
- 🌙 Night VPD: Night mode events
- 🚨 Emergency: Critical system events
Room Colors: Each room has a unique color for easy identification:
- Veg tent: Greenish
- Flower tent: Purple/pink
- Drying room: Orange/red
- (Colors are automatically generated based on room name)
Searching Logs:
- Use the search box to find specific events
- Filter by log type using the dropdown
- Click on a log entry to expand and see details
Add notes to track:
- Plant observations
- Feeding schedules
- Deficiencies
- Growth milestones
Change the currently active grow room:
- Click on room selector
- Choose from available rooms
- Dashboard updates to show selected room's data
Select the preferred control mode:
- Manual, VPD, PID, MPC
- Configure parameters for each mode
Own Device Sets
- Map entities to device types
- Override automatic device detection
Climate Devices
- Select climate entities
- Configure min/max values
Light Settings
- Light control modes
- Dimming settings
- Sunrise/sunset phases
- UV, Far Red, Blue, Red spectrum controls
Hydroponics
- Pump settings
- Feeding schedules
- Nutrient dosing
Target Values
- Set optimal ranges for temperature, humidity, VPD
- Configure custom weights
- Set min/max limits
Enable Safe Mode to require confirmation before making changes:
- Prevents accidental device toggles
- Useful for critical grow periods
Login to premium features:
- Enter your credentials
- Access advanced controls
- Unlock premium features
Check:
- Is the device configured in Home Assistant?
- Is the room selection correct?
- Is Safe Mode enabled and requires confirmation?
Solution:
- Verify device entity IDs in Home Assistant
- Check room mapping
- Confirm or disable Safe Mode
Check:
- Are sensors configured in Home Assistant?
- Are they properly named?
- Is the room filter set correctly?
Solution:
- Check sensor entity naming (should start with "sensor.")
- Verify room name matches in entity ID
- Try "All" filter to see if sensors appear
Check:
- Is WebSocket connection established?
- Are there historical records?
Solution:
- Refresh the page
- Check Home Assistant logs for errors
- Ensure sensors have been collecting data
Symptoms:
- Dashboard not updating
- Error messages in console
- Devices showing "unavailable"
Check:
- Home Assistant is running
- WebSocket connection is active
- Access token is valid
- Network connection is stable
Solution:
- Restart Home Assistant
- Refresh browser
- Check authentication
- Verify network connectivity
Issue: All rooms have same color
Solution:
- Refresh the page
- Colors are generated from room name hash
- Different room names = different colors
Issue: Text hard to read on colored badges
Solution:
- This was fixed in v1.0.8
- Update to latest version
- Clear browser cache
- Start with Manual Mode to understand your devices
- Gradually switch to automated modes (VPD/PID)
- Monitor logs regularly to catch issues early
- Set appropriate targets based on plant stage
- Keep grow notes for future reference
Vegetative Stage:
- Temperature: 22-26°C
- Humidity: 50-60%
- VPD: 0.8-1.0 kPa
Flowering Stage:
- Temperature: 20-24°C
- Humidity: 40-50%
- VPD: 1.2-1.5 kPa
Drying/Curing:
- Temperature: 18-21°C
- Humidity: 45-55%
- VPD: 0.9-1.2 kPa
Vegetative:
- 18-24 hours light
- PPFD: 200-400 µmol/m²/s
- Blue spectrum for vegetative growth
Flowering:
- 12 hours light
- PPFD: 400-800 µmol/m²/s
- Red spectrum for flowering
If you encounter issues not covered here:
- Check Home Assistant logs for errors
- Visit the OpenGrowBox community forum
- Report bugs with details:
- Browser version
- Home Assistant version
- OGB version
- Steps to reproduce
- Console errors
Happy Growing! 🌱