Smart Sensing
The GOhydro platform integrates different sensor kits for nutrient, plant health and environment monitoring for indoor production of various microgreens (i.e. basil, coriander, parsley and mint). These sensor kits are based on off-the-shelf components, readily available and affordable for general use.
Multi-modal Sensor Kit (MMSK)
One of the main technical objectives of the GOhydro project is the development of a Multi-modal Sensor Kit (MMSK) capable of monitoring at pre-determined intervals the environmental factors affecting the hydroponic cultures of microgreens, the quality of the water feeding the plants as well as the nutrient content of the microgreens. This kit has as a main task to collect information about the cultivation conditions and the quality of the microgreens and communicate the relevant information to the e-agronomist mobile application that will notify the user about the health of the crops and provide suggestions about necessary condition arrangements.
MMSK is divided into 3 major components:
Crop Health Sensor Kit (CHSK)
Nutrient-content Kit (NCK)
Communications and Storage Unit
The Crop Health Sensor Kit (CHSK) and the Communications and Storage Unit (CSU) can be prepared by using a 3D printer and they can placed in any hydroponic installation.
The components that need be purchased for preparing the Crop Health Sensor Kit (CHSK) and the Communications and Storage Unit (CSU) are presented in the table below:
Components of the GOhydro Crop Health Sensor Kit (CHSK):
Component | Model |
|---|---|
Air Temperature Sensor & Air Humidity Sensor | Adafruit HTU21D-F Temperature & Humidity Sensor Breakout Board |
Light Sensor (UV) | SI1145 Digital UV Index / IR / Visible Light Sensor |
Water Temperature Sensor | Temperature Sensor – Waterproof (LM35) |
Digital pH Meter | Liquid PH Value Detection Sensor Module |
Electroconductivity Sensor | Analog TDS Sensor Water Conductivity Sensor |
MicroSD memory card | 32GB microSD memory card |
Microcontroller | Raspberry Pi Zero 2 W (BLE, WiFi included) |
Microcontroller Groove Hat | Seedstudio groove base hat |
Turn off Button | Stainless steel push button-led blue |
Groove cables | 4-pin groove cables |
Pin headers | Male and female pin headers (indicatives) |
Heat shrink sleeves | Heat shrink sleeves (indicatives) |
Battery | Xiaomi Redmi 18W Fast Charge 20000mAh |
USBA to micro-USB adapter for powerbank to Rpi | Powertech USB 2.0 Cable USB-A male - micro USB-B male 0.25m (CAB-U009) |
Heatsink | Heatsink for Raspberry Pi Zero |
HDMI cable for testing (optional) | HDMI to mini-HDMI |
Micro USB to female USB for testing with keyboard (optional) | Micro usb to female usb adapter |
Power supply used for testing | Raspberry Pi Zero Power Supply 2.1A |
Components of the GOhydro Communication & Storage Unit (CSU):
Component | Model |
|---|---|
Single Board Computer (SBC) full kit | Raspberry Pi 4 Model B (BLE, WiFi & Ethernet onboard) |
Power Source | Raspberry Pi 4 Official power 3A (15,3W) USB-C |
Micro sd-card | 128GB micro SD-Card |
USB type A to USB type c adapter for powerbank to Rpi-4B | Baseus cable Double Fast USB for type-C 5A black |
