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Grow box
Grow tents and grow boxes
Automate lights, ventilation, watering and basic climate monitoring in small indoor grow setups.
GEIA Official Guides
DIY · firmware · MQTT · API
Hydroponics Automation DIY Guides
Build hydroponics, greenhouse and indoor grow automation your way. Start with offline Arduino code, use GEIA firmware for faster app-controlled automation, or connect your own code through MQTT and REST API.
GEIA builder library
offline Arduino code
GEIA firmware + app pairing
custom sensor via MQTT/API
Python / ESP32 custom automation
dosing pump calibrationBeginnerOffline script
Smart pathGEIA app
DeveloperYour code
🏕️Offline DIYTimer-based local code
⚡Smart automationFirmware, app, charts, alerts
⌘Developer modeMQTT, API, scripts
💧Dosing pumpsPair, measure, calibrate
Guide library
Pick the guide that matches your build
Choose a maintained GEIA guide for your hardware, firmware or automation path. Each guide is organized around a real build and clear next steps.
Guide
01
Flash & Pair a GEIA Node
Get a GEIA or compatible DIY board ready, then pair your node in the app.
Smart Path
02
Connect Sensors & Relays to Your GEIA Node
Connect sensors and relays to a GEIA or compatible DIY node, add them in the app, test them, and try a simple automation.
Open
03
Add a Custom Sensor to GEIA
Connect an unsupported sensor with your own ESP32 or ESP8266 firmware, then send live or logged data to GEIA using MQTT or the REST API.
Your Code, On Our Platform
04
Build a Custom greenhouse Hydroponics Automation Script
Build your own Arduino, Python or Node.js greenhouse hydroponics automation, read GEIA sensor values over MQTT, control a relay, and keep GEIA dashboards and manual overrides connected.
Community library
Community guides from growers, builders and GEIA ecosystem members
Explore community grow journals, hardware builds, automation recipes, troubleshooting notes and practical guides submitted by GEIA users and partners.
No community guides are published yet. Approved submissions will appear here.
Have a grow guide, script or hardware build to share?
Submit a guide
Submit it for review and help grow the GEIA community knowledge base.
Share your experience with the GEIA community
Log in to contributeLog in to submit a grow guide, build, journal or automation recipe.
Guide coverage
Hydroponics automation DIY guides for real grow setups
These guides show how GEIA building blocks, sensors, relays, firmware, MQTT/API logging, alerts and automation rules - can be used across different grow environments. Start with a GEIA Board, GEIA Node, pre-flashed kit, or your own ESP32-based hydroponics setup, then expand into grow boxes, reservoirs, greenhouses, mushroom chambers, vertical farms and water-monitoring systems as your hardware and needs grow.
Grow box
Reservoir
Hydroponics reservoirs
Track water temperature, water level, pump status and nutrient-related workflows.
Water systems
Aquaponics and aeroponics
Connect pumps, misting, oxygenation, water sensors and environmental monitoring.
Scale up
Indoor farms and vertical farms
Move beyond one box with multiple sensors, nodes, relays, zones and data history.
Gewächshaus
Greenhouses and grow beds
Use compatible devices for irrigation, fans, vents, temperature, humidity and VPD workflows.
Garden
Home gardens and horticulture
Start simple with sensor logging and reminders, then add automation when needed.
Humidity
Mushroom grow setups
Monitor humidity, temperature, ventilation and misting cycles for controlled grow rooms.
See external guide: GroCycle
Water
Aquariums, ponds and water treatment
Use GEIA-style monitoring for water level, temperature, pumps, aeration and alerts.
Docs & tools
Platform references and setup links
Keep these links visible. They support DIY users, developers and hardware partners without forcing them to search through old documentation pages.
API
REST API Docs
Connect scripts, apps and external services to GEIA.
MQTTMQTT Docs
Send device readings, states and events through MQTT.
ToolFirmware Tool
Flash supported ESP32/Arduino-style hardware.
CatalogCompatible Hardware
Find supported sensors, boards, relays and integrations.
Download 3D Parts3D Printables
Enclosures, mounts and grow hardware parts.
ÖkosystemModules & Plugins
Future third-party modules and GEIA extensions.
PlannedAction Hooks
Planned hooks for advanced workflows and integrations.
ReviewSubmit Hardware
Request compatibility review for your device or integration.
Building real grow automation?
Start using GEIA smart firmware on your Arduino board
