This page documents the irrigation upgrade for the vegetable garden beds using real soil moisture data to trigger watering through the existing B-Hyve irrigation controller.

The goal: water only when the soil actually needs it, not on a timer.

The system uses:

• VegeHub WiFi Control Hub (Vegetronix)
  • Handles wired soil moisture sensors (1–4 per hub)
  • Sends readings to Home Assistant (local API)
  • Has an onboard relay (optional to use)

• VH400 Soil Moisture Sensors (Vegetronix)
  • Extremely accurate, long-term stable, outdoor-rated
  • Low power consumption
  • Ideal for vegetable beds

• B-Hyve Irrigation System
  • Already installed and working
  • Exposed to Home Assistant as zone switches
  • Automations will trigger B-Hyve based on moisture thresholds

Your initial project plan:

• Phase 1: 1 VegeHub + 4 sensors → one sensor per bed
• Phase 2: Add second VegeHub + 4 sensors (8 total)
• Goal: Each irrigation zone waters *only* when its beds are dry

[ VH400 Sensor A ]   \
[ VH400 Sensor B ]    >  → VegeHub → Home Assistant → B-Hyve Zone 1
[ VH400 Sensor C ]   /
[ VH400 Sensor D ]

Home Assistant logic:
  - Compute per-bed moisture (avg or median)
  - Compute zone moisture = min(bed A, bed B)
  - Trigger watering only when moisture < threshold

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