GROUU · Evolution · V0 · GrouuPro
▢ Archived

GrouuPro — the V0 greenhouse

GrouuPro, 2013–2014. A greenhouse with an automated fertigation system for four raised beds. Built: sensing, cloud logging (Temboo → Google Sheets), local actuation. Designed, not built: the server app, remote control, automation. Sole author; build assistance by Rui Lopes.

Arduino Yún Arduino Uno · I²C Temboo → Google Sheets Fertigation Archived
The GrouuPro greenhouse, built
▢  Archived — not in active development. Built: sensing, cloud logging, local actuation. Not built: server app, remote control, automation.
As built

System block diagram

Sensing → gateway → cloud log; local actuation through the cabinet.

Field
Sensors
DHT22 · LDR · soil moisture · leaf wetness · DS18B20 · pH · levels · flow
→
Probe boards
Arduino Uno probes
analog + 1-Wire in · I2C_Anything out
I²C→@42
Gateway
Arduino Yún
MCU sensing/actuation + Linux Bridge
Temboo→
Cloud middleware
AppendRow choreo
timestamped rows
→
Dashboard
Google Sheet
"GROUU_EXP" · interim log / plot
Yún GPIO · PWM▼
MOSFET perfboard
PWM drivers · no custom PCB
▼
Top-hatch servo
ventilation · pin 9
6× dosing pumps
BPER_1…6 · peristaltic
Irrigation pump
BR_P · main line
Valves
EV_EA · EV_3S · EV_4SR · VG_DP · VG_FR
▼
Fertigation cabinet
→
Bed 1
Bed 2
Bed 3
Bed 4
Cabinet + plumbing

Fertigation P&ID

The four-level armário on the left; the water path it drives on the right. Glazed structure in LEXAN 8 mm on BWF aluminium; no custom PCB — pumps/motors on perfboard MOSFETs.

Control cabinet · armário
L4Electrical & electronic panel
Yún · Unos · MOSFET perfboard · PSU
L3Nutrient dosing
6 peristaltic pumps BPER_1..6 + bottles
L2Tanks
Depósito Água (SNA_DP) · Dep. Ferti-Rega (SNA_FR)
L1Hydraulics
EV_EA · VG_DP · VG_FR · EV_3S · EV_4SR · BR_P · FLUX_1
water inlet
→
EV_EA
→
Water tank
SNA_DP
VG_DP▼
Ferti-rega tank
SNA_FR
◄
BPER_1..6
concentrated nutrients
VG_FR▼
BR_P
→
FLUX_1
→
EV_3S / EV_4SR
▼
Bed 1
Bed 2
Bed 3
Bed 4
▼4 drains → esgoto (sewage)
Designed 2014, never fully built

Envisioned architecture

One central core, wired probes. A limited set of probes cables into the Yún — the Arduino MCU runs sensing + global actuation (multiplexed I/O); Linux is the server: local edge, or — as deployed — Temboo publishing to a Google Sheet.

PROBE 1
Sensor board
wired · I²C
PROBE 2
Sensor board
wired · I²C
PROBE 3
Sensor board
wired · I²C
PROBE 4
Sensor board
wired · I²C
fixed set — bus limit, not modular
Arduino Yún
CENTRAL CORE · DUAL ROLE
MCU
Sensing + actuation
+ multiplexing shield for more ports
LINUX
Server / bridge
local edge server or cloud publish
GLOBAL ACTUATORS
Irrigation cabinet · top-hatch vents
MOSFETs · pumps · valves · servo
PATH A — ENVISIONED
Local edge server
Node server + web front end on the LAN
or
PATH B — AS DEPLOYED
Temboo → Google Sheet
"GROUU_EXP" · one probe's data
wired link  ·  today's vision instead → fully modular Wi-Fi / LoRaWAN sensor & actuator nodes + MQTT server stack
Envisioned modules

App map

The module flow of the never-built server app, from the outline.

01
Login
Entry point for every unit and user.
02
Profile
Admin / user roles.
03
Environmental definitions
Temp / humidity / photoperiod limits · µEinsteins.
04
Tests
Per-bed: plant, goal (crop / blooming / rooting / fruit-set), data interval, moisture · stress overrides · fertigation scheduling.
05
Watering solutions
6-product nutrient mixes: insert → mix → save.
06
Log & annotation
Autolog + notes + photos · archive to PDF.
07
Dashboard
Real-time + anomaly alerts · global temp / humidity / photoperiod / luminance · per-test soil-temp, moisture, leaf wetness, hours.
The build

Photos

The greenhouse, built
A detail inside
Construction — frame & glazing
Assembly
Top ventilation hatch (servo-driven)
The vent
Peristaltic dosing pumps
The main pump
Water & electricity inlets
The Arduino Yún control unit
A sensor probe
Probe detail
Raised beds
Raised beds
Raised beds
3D model

Fusion 360 viewer

Recent GROUU designs are modelled in Autodesk Fusion, which embeds a web viewer. The greenhouse Fusion model is not done yet; when it is, it embeds here.

🧊📐Fusion 360 model — not yet available.
In the archive

What's kept, and where

The firmware, the master-plan outline and key drawings are committed; the 1.5 GB of CAD, renders and raw photos are catalogued in the manifest and referenced on backup. (Temboo/Google credentials in the sketches are redacted.)

⟶ Firmware (Yún · probe · Temboo sketches) ⟶ GROUU OUTLINE (the master plan) ⟶ Drawings + fertigation schematic ⟶ SolidWorks model tree (audited) ⟶ Full manifest (1.5 GB catalogued)
Related
Server Stack →

MQTT · Node-RED · InfluxDB · Grafana.
WiFi Node →

ESP32 + DHT22 template.
GROUU home →

V0 → V3 evolution.