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🌱 100% FREE & OPEN-ACCESS ENGINEERING REPOSITORY β€’ ZERO PAYWALLS

Open-Access Digital Engineering Asset Repository

Production-grade spreadsheets, standalone zero-dependency Python solvers, and turnkey feasibility dossiers β€” published 100% free of charge under MIT & Creative Commons licenses for commercial growers, researchers, students, and AgTech builders worldwide.

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1-Click Instant Download Direct ZIP downloads with zero wait time, no registration, and no checkout forms.
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100% Unlocked Source Code Full Python 3.9+ source, unencrypted formulas, and open CSV data.
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Zero-Paywall Public Good Unrestricted access for commercial production, academic research, and teaching.
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Continuous Peer Updates Maintained & updated as international horticultural and energy standards evolve.
πŸ‘‘ UNIFIED 7-IN-1 MASTER REPOSITORY (100% FREE)
ALL-IN-ONE INSTITUTIONAL AGTECH ARSENAL

Complete AgTech & CEA Enterprise Master Vault (7-in-1)

The definitive commercial engineering arsenal for greenhouse EPC contractors, vertical farm operators, and institutional agricultural investors. Includes all 7 production suites, Python solvers, 15-crop fertigation recipes, structural BOM tools, and turnkey B2B offtake contracts.

βœ“ 50-State USDA & REAP Grant Playbook
βœ“ OpenCEA Pro Biophysical Python Suite
βœ“ Bavarian Meister DQR 6 Production Dossier
βœ“ Precision Hydroponic Nutrient Formulator
βœ“ Greenhouse Construction BOM Reverse Estimator
βœ“ Vertical Farm Unit Economics & Heat Simulator
βœ“ High-Value Specialty Crops (Wasabi & Vanilla)
β˜… Unified ZIP Archive + All 29 Production Files
OPEN-SOURCE PUBLIC GOOD
FREE 100% Open Access
⚑ Instant Download β€’ MIT & CC-BY 4.0 License
πŸ“₯ Download 7-in-1 Master Vault (ZIP β€’ 103 KB)
Free for commercial, farming, academic & teaching use.
CAPITAL & FEASIBILITY

50-State USDA & REAP Grant Application Dossier Playbook

FREE Open Access MIT / CC-BY

Complete 140-page turnkey template library for securing $250k–$500k in non-dilutive federal and state agricultural capital (USDA REAP, EQIP, ACEP, CDFA).

  • βœ“ Bank-ready Commercial Feasibility Narrative (Word + MD)
  • βœ“ VDI 4640 & ASABE S640 Energy Audit Calculation Matrix
  • βœ“ Full 50-State scoring rubrics & match-rate optimization sheets
  • βœ“ Subsidized ROI & Payback Period cash-flow workbook
  • βœ“ Instant ZIP archive download with license certificate
πŸ“₯ Download Free ZIP (11 KB)
GERMAN MASTER HORTICULTURE

Bavarian GΓ€rtnermeister Examination & Production Dossier

FREE Open Access CC-BY 4.0

Complete technical examination preparation and operational dossier based on Bavarian Horticultural Master Standards (Fachrichtung Zierpflanzenbau & GemΓΌsebau).

  • βœ“ DIN 11535 Greenhouse Structure Compliance Checklist
  • βœ“ DΓΌV (DΓΌngeverordnung 2026) Closed-Loop Runoff Equations
  • βœ“ German-English Master Horticulturist Technical Glossary (400+ terms)
  • βœ“ VDI 4640 Aquifer Thermal Storage & Heat Pump Audit Sheets
  • βœ“ Practical oral exam defense case studies & calculation guides
πŸ“₯ Download Free ZIP (36 KB)
FERTIGATION & ION BALANCING

Precision Hydroponic Nutrient Formulation & Groundwater Suite

FREE Open Access MIT License

Deduct native well water minerals from target crop requirements and solve exact salt weights (Tank A/B 100x) using pure Python. Cuts monthly fertilizer spend by 20%–35%.

  • βœ“ Pure Python 3.9+ CLI/JSON stoichiometric ion formulator
  • βœ“ Native groundwater deduction (Ca, Mg, HCO3, SO4) & acid dosing
  • βœ“ 15 Commercial crop database (Strawberry, Tomato, Wasabi, etc.)
  • βœ“ Salt solubility limits (10Β°C/20Β°C) & precipitation matrix chart
  • βœ“ Iron chelate selection guide (Fe-EDTA vs DTPA vs EDDHA by pH)
πŸ“₯ Download Free ZIP (13 KB)
CONSTRUCTION & LEGAL DEFENSE

Greenhouse Construction Cost & BOM Reverse-Estimator Suite

FREE Open Access MIT / CC-BY

Reverse contractor quotes into exact physical steel tonnage, cladding areas, drive motors, and fair labor. Detect price-gouging and defend against predatory construction terms.

  • βœ“ Python 3.9+ physical BOM & steel tonnage calculator
  • βœ“ KS certified pipe specs (SPPS 290 / SPP) vs non-certified steel
  • βœ“ Multi-span PO vinyl, polycarbonate & Venlo glasshouse models
  • βœ“ Contractor markup gouging detector (fair 12% margin benchmark)
  • βœ“ Top 10 Predatory Contract Defense Clauses & Counter-Provisions
πŸ“₯ Download Free ZIP (11 KB)
FINANCE & THERMODYNAMICS

Vertical Farm Unit Economics & CapEx/OpEx Simulator

FREE Open Access MIT / CC-BY

Institutional thermodynamic mass-energy balance solving sensible heat, latent moisture, power tariffs, true COGS per kg, and 10-year investor-grade pro-forma cash flows.

  • βœ“ Thermodynamic heat balance & HVAC chiller sizing model (.py)
  • βœ“ Monthly biomass yield (heads/month, kg/month) & photoperiod PPFD
  • βœ“ True COGS per kg & 100g retail bag break-even calculator
  • βœ“ Turnkey 100-Pyeong 5-tier β‚©380M BOQ schedule with equipment specs
  • βœ“ 10-Year Amortization, OpEx ledger & bankable EBITDA financial model
πŸ“₯ Download Free ZIP (10 KB)
NICHE HIGH-MARGIN HORTICULTURE

High-Value Specialty Crops (Wasabi & Vanilla) Commercial Suite

FREE Open Access CC-BY 4.0

Complete engineering & agronomic blueprint for Sawa-wasabi and cured Bourbon vanilla pods selling for β‚©160,000–₩800,000/kg. Includes turnkey B2B fine-dining supply contracts.

  • βœ“ Sawa-wasabi chilled gravel gutter engineering (11Β°C–14Β°C)
  • βœ“ Dissolved oxygen supersaturation (β‰₯8.5 mg/L) root-rot prevention
  • βœ“ Vanilla high-wire vine looping & morning pollination manual (β‰₯92% set)
  • βœ“ 4-Stage Bourbon curing protocol achieving β‰₯2.0% vanillin content
  • βœ“ B2B fine-dining & omakase direct supply agreement template
πŸ“₯ Download Free ZIP (12 KB)

Frequently Asked Questions

Are these engineering tools and dossiers truly 100% free?

Yes. Every Python solver, CSV database, grant template, and greenhouse BOM model in this repository is completely free of charge. No credit card, no subscription, and no email sign-up required.

Can I use these assets for my commercial farm or EPC engineering company?

Yes. All code is licensed under the permissive MIT License, and documentation is licensed under Creative Commons Attribution 4.0 (CC-BY 4.0). Commercial use, internal modification, and corporate deployment are fully permitted.

Do I need to install external Python packages (pip install)?

No. All computational engines (psychrometrics, groundwater nutrient balancer, BOM reverse calculator, vertical farm heat simulator) are engineered in pure Python 3.9+ standard library with zero external dependencies.

How can I support Inwoovation Lab's open-access mission?

You can support us by sharing this open repository with agricultural researchers, growers, and students worldwide. For large-scale smart greenhouse construction auditing or institutional CEA consulting, contact our advisory desk.