Automate your grow. We sell the exact parts.
Controllers, sensors, and actuators — curated by a builder who runs this gear on a real automated garden. Plus an AI advisor that specs your build and catches compatibility mistakes.
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All productsSave $30 on full-spectrum LED grow lights
Dimmable 0–10 V, passive-cooled, and silent — now $129 while stocks last.
Shop by category
All productsMicroelectronics
Boards, brains, and the bits you prototype a build on.
15 productsSensors
Measure climate, light, water, and air — the inputs automation runs on.
10 productsRelays & Automation
Switch and dim real loads from low-voltage logic, safely.
10 productsWiring & Connectors
Cable, terminations, and connectors for installs that last.
15 productsPower
Clean, protected power rails for controllers and actuators.
8 productsIndustrial Networking
Rugged switches, routers, and protection for the grow network.
7 productsGrow Automation
Lighting, dosing, irrigation, and monitoring for the room itself.
10 productsCurated, not cluttered
Every product earns its spot by making a real grow or automation project easier. No dropshipped junk.
AI build advisor
Spec an automation kit from a few questions. The advisor flags missing parts and incompatibilities before you buy.
Real expertise
Guides and builds from actual installs and firmware work — every project ends in a shoppable parts list.
Featured gear
All products
Raspberry Pi 5
Quad-core single-board computer — the hub that runs Home Assistant and coordinates your whole grow.
Raspberry Pi Zero 2 W
Tiny quad-core Pi with Wi-Fi — a low-power hub for small grows and camera nodes.
Raspberry Pi Pico 2
Dual-core RP2350 microcontroller — cheap, deterministic control for a single subsystem.
ESP32 Development Board
The classic Wi-Fi/BLE workhorse — the most common brain for grow automation nodes.
Learn to automate
The content engine — every guide funnels to the parts that build it.
Build an Auto-Watering System for a 4×4 Tent
A closed-loop watering build that reads real substrate moisture and waters only when the plant actually needs it — wiring, code outline, and the exact parts list.
9 min readBuyer's GuideWhich ESP32 Should You Buy for Grow Automation?
S3 vs the classic ESP32 vs reaching for a Raspberry Pi — which board actually fits a sensor-and-relay node, and when you need the bigger brain.
6 min readTroubleshootingWiring a Clean Sensor Bus Across the Grow
Dropouts, garbage reads, and dead buses — the four causes behind almost every unreliable long-run sensor bus, and how to fix them for good.
7 min readTell the advisor your tent size — get a complete kit.
The Rootwire advisor knows the catalog and the compatibility rules. Describe what you're growing and it assembles the controller, sensors, and actuators you need — the complete parts list for your build.