Dro Sensor
$220
Soil and coco. One sensor turns the free app into a survey tool.
Built to order · ships in 2-4 weeks
Growbud · Sense · Decide · Act
Sense it. Control it.
Protect the operation.
Measure the water and the power, then act on both. Growbud meters root zones, supply lines, and electrical circuits, and runs the control loop on-site, so the waste shows up as a number you can see, and the savings are ones you can prove rather than estimate.
- 4-in-1
- VWC·EC·temp·RH
- 0
- internet required
- Open
- Modbus·BACnet·API
DRO-0142 · VWC 43.1% ▾ZONE-3 · EC 2.4 mS/cmWALK-IN-2 · 37.8°F · DOOR CLOSEDVALVE-A · CLOSED · CONFIRMEDPUMP-1 · 6.2 A · 0 GPM · IDLELEAK-SENSE B2 · DRYMETER-3 · 0.82 kW · 0.94 PFGATEWAY-01 · LORAWAN · 14 NODESEDGE · LOCAL AUTOMATION · ONLINECOMP-2 · 4 STARTS/HR · WATCH
Where Growbud works
Control the conditions that drive your operation.
Two operations, one stack. Pick the one you run and jump straight to it.
Start here
Published prices, no quote required.
Vero Sensor
$200
Stone wool and small containers, where steering starts at the slab.
Built to order · ships in 2-4 weeks
4 valve zones, 128 Modbus devices, BACnet and LoRaWAN.
Built to order · ships in 6-8 weeks
- 90-day returns, no questions asked
- 1-year limited warranty
- Data export over Modbus, BACnet, and REST
- Shipping and returns
For growers · 01
Cultivation
Root-zone sensing and closed-loop irrigation for indoor rooms, greenhouses, and outdoor blocks. Irrigate to what the substrate actually holds instead of to the calendar, and stop paying to push water past the root zone. Readings you can check by hand, and control that keeps running when the network doesn't.
The problem
You can't control what you can't see.
01
Driving blind between checks
A schedule is excellent at being on time and indifferent to conditions. Between manual checks, containers and fields swing wet and dry, whether you're running 500 acres or 20 greenhouse zones, and you find out afterward.
02
Salinity confuses the reading
Most commercial probes were designed for row crops, not high-EC hydro or heavily fertilized media. In those conditions salinity interferes with water-content readings, and a confident number can still be the wrong number.
03
Dead zones on site
Remote fields, basements, and outbuildings often have no WiFi or cell. Cloud-only systems go quiet in the one place automation matters most: on-site.
The loop
Sense it. Decide it. Water it.
A closed loop that lives on your site, from probe to pump, and keeps running when the internet doesn't.
Readings you can check
Moisture, nutrient strength (EC), and temperature you can ground-truth yourself against pot weight, in your own medium. Built for salty hydro media and dry field soils, not only open-field row crops.
Control that lives on-site
Growbud Edge makes control decisions on-site. When the network drops, irrigation and automation keep running. The operation never needed a login.
From source to valve
One system from probe to pump. Sense, decide, and move water on the same platform, or hook into the irrigation, feeding, and building gear you already own.
Intelligence
Sees it coming. Acts in time.
Growbud learns your crop: it predicts dry-downs before they happen, spots stress in leaf photos, and folds every reading into one clear watering call, on-site, in real time.
AI predictions
Sees dry-down hours before the plants show it, so watering starts on schedule with the crop, not after the fact.
Reads your leaves
Crop photos surface stress, deficiency, and disease before soil numbers move, and that evidence feeds watering and feeding decisions.
One clear picture
Soil, climate, and crop photos resolve into one signal you can act on, without three dashboards and a spreadsheet reconciliation.
Survey tool
Survey the site before you instrument the whole floor.
One Dro is a portable survey tool: find wet spots, dry ridges, and EC buildup, then place permanent sensors where the data actually earns the install.
Start with one DroPlace one Dro in the field, bed, or container you want to benchmark.
2
Walk high, low, wet, and dry zones to compare VWC, EC, temperature, and humidity.
3
Use the map of readings to decide where permanent sensors and controls belong.
For facilities · 02
Commercial buildings
The same Controller, pointed at the machinery instead of the crop. Power, water, and air on one RS-485 bus, speaking Modbus RTU and native BACnet to the building automation you already run. Find the pump that never shuts off, the compressor short-cycling all night, and the line that has been leaking since Friday. Those three quietly run up both bills.
Power monitoring
Almost everything in a building is electrical, and current is how each machine reports its own condition. Put a Modbus energy meter on a circuit and see what actually ran, for how long, and overnight when nobody was there. Real kW and power factor, measured, so a reduction is something you can show rather than something you assume.
Leak detection and verified shutoff
Leak sensors in boiler rooms, mechanical rooms, and under water heaters. The Controller closes the supply valve, confirms flow actually reached zero, and alarms if it didn't, so a valve that fails to seat is something you find out about before the flood.
Air quality and ventilation
Temperature, humidity, VPD, and CO2 across mechanical rooms, offices, and equipment spaces, feeding the BMS in real time so ventilation responds to conditions instead of a schedule.
Power controls
Four relay-driven outputs for pumps, fans, lights, and valves, on schedules or sensor triggers. Sixteen schedules run on the Controller itself, so the building keeps operating through an internet outage.
Water and power
You cannot conserve what you never measured.
Most of this industry will quote you a percentage. We would rather give you the instrument, because the only saving worth claiming is one your own data shows.
Water, at the root zone and the main
Substrate moisture tells you when a zone actually needs a shot, and flow on the supply line tells you what left the pipe. Over-irrigation and a slow leak look identical on a monthly bill and completely different here.
Power, at the circuit
A Modbus meter reports real kW and power factor, not an estimate from a nameplate rating. Runtime and duty cycle per machine show you what is running when nobody is in the building.
Numbers you can hand to someone
Full history export over the API. Whether it is a water district reporting requirement, a utility rebate that needs before-and-after data, or a sustainability disclosure, the measurements leave in a format other tools read.
How we sell
No quote form. No lock-in.
Two commitments that shouldn't be unusual in this market, and are.
Every price is published
Sensors, controllers, and gateways are listed with their prices on this site. No quote form, no dealer, no discovery call before you can work out whether it pencils out for your operation.
See the price listThe data is yours to take
Modbus RTU, native BACnet, and a full REST API. Export your history whenever you want, and drive your own systems with it. Your readings stay yours, in formats your other tools already read.
Read the API docsThe hardware
One sensor is enough to start.
Buy a single Dro or Vero, pair it with the free app, and prove the readings before you commit to a full deployment.
Recommended kits
Pick the kit that matches your operation.
Free app
Every sensor has somewhere to report.
Pair a single sensor, review live readings, and add gateways and controllers when the site needs continuous monitoring or automation.
Download the Growbud App
Available on mobile & web
Monitor your sensors, configure alerts, and analyze trends from any device. Free for all Growbud sensor owners.
Mobile
Desktop apps for Windows & macOS coming soon
Stay updated
Ready to stop watering on guesswork?
Join cultivators who've swapped timers and gut feel for watering driven by what their plants actually need.