Urban Farming IoT System for Plant Growth

EnCata engineered a smart farming IoT system that automates plant growth with sensors, custom PCB design, and cloud control. The solution developed and prototyped by our team helped the client to validate technology, secure patents, and prepare for market entry.

Industry:

Agriculture
Agriculture

TRL:

1 → 5

Project duration:

7 months

Urban Farming IoT System for Plant Growth

Technologies Used

PCBA
UART microchip
CO2 sensor
Grow light LED
Peristaltic pump
CNC milling
CNC laser cutting
MIG and TIG welding
Sheet metal bending
CMOS
Carbon air purification filter

Project Backgroung

Challenge

With many households living in urban areas and high ORGANIC food prices, there is an unmet demand for simple home farming. Some urban citizens can afford to dedicate long hours to amateur agriculture projects. Others want to crop fresh vegetables and greens at arm’s length, without spending any time fertilizing, weeding, or monitoring the plants. 

Home farming nowadays is not much different from traditional cultivation technologies that have existed for centuries. The home agriculture sector’s innovation is rather incremental and revolves around neat ‘garden’ tools and effort demanding DIY automation products based on Arduino and Raspberry Pi. 

Many smart farming and agritech startups have made unsuccessful attempts to address the existing gap in the B2C sector and thus pivoted to provide advanced automation B2B solutions. Some home farming startups and companies learned the hard way of navigating through a great variety of cultivated crops and thus drifted to the rapidly evolving cannabis market. 

In this case, a B2B agritech company identified customer needs and engaged EnCata to help them build a new B2C product to allow them to conquer new international markets and diversify their business.

This project’s challenge was developing a hardware + software B2C product with a straightforward “plant and forget” principle as a cornerstone. Minimal space was also an essential constraint.

Challenges

01
02
03

Approach & Solution

We started with the product’s basic idea: “plant and forget,” which required us to initially run a feasibility study (business, technology, and engineering). A range of technologies for plant medium culture was considered (Aeroponic, Wick, Water Culture, Ebb and Flow (Flood & Drain), Drip (recovery or non-recovery), N.F.T.

In developing the product concept we narrowed to two hydroponic irrigation technologies:

  • Ebb & Flow;
  • Nutrient Film Technique (NFT).

Choosing these two technologies in the concept development required possessed challenge to minimize/optimize the overall complexity of automation and IoT functionality. On top, much effort was put into developing intuitive UX design, interfaces, and creating the design that allows easy maintenance. Product maintenance is extremely important for consumers, who do not want the confusion of monitoring various nutrient and fertilizer solutions (a common problem found in aquaponics and hydroponics solutions).

Analyzing the market for crop varieties, we learned that "environmentally friendly” grown crops add 80% price markup, while the ORGANIC market volume is still 10 times smaller than ‘industrially’ grown fresh salads, berries, and vegetables.

The electrical components design required low energy consumption - a potential deal-breaker for some customers focused on their bills.  Various module prototypes, such as control systems and trays for plant growing, were designed and tested as part of the engineering development.

trays for plant

As such, the control module comprises a custom-designed PCB that gathers data from various modules and IoT sensors:

  • temperature,
  • pH, 
  • humidity, 
  • CO2 sensor (Intelligent Infrared CO2 Module MH-Z19 family),
  • TDS solution conductivity.

The IoT functionality allowed a direct feedback loop and created a homeostatic regulatory system/mechanism within the plant growing module. Fresh air is provided to the ‘box’ by a fan, while the air outlet has a carbon air filter removing potentially unpleasant odors produced by the host plants.

The PCB incorporates a Wi-Fi module for internet connection and firmware updates and a BLE (Bluetooth Low Energy) to connect to a mobile app.  A separate custom controller was designed to manage the LED lights, their spectrum, and their intensity. 

Having completed the engineering validation and “plant growth” tests, EnCata developed a modern industrial design and module arrangement around the developed sub-systems. Overall, the design represents a rectangular “box” with a glass door, incorporating a fertilizing/nutrient solution module, electronics, smart LEDs, and an irrigation system comprised of a series of pumps and dispensers. These modules feed an array of small trays hosting individual plants and enabling their growth.

In 2019, the market for home farming equipment totaled USD 2 billion. The United States accounted for 55% of the global market, followed by Germany, England, and Italy’s combined 16% market share. 
The 8-year CAGR market growth was 450%.

Looking to develop a custom IoT prototype or validate your agritech device with a feasibility study? Feel free to get in touch with us. We will supply you with a precise estimate promptly!

Results and Benefits

We designed, engineered, and manufactured a prototype for the home farming market relying on N.F.T. and flood and drain hydroponics technologies. The development reached as far as TRL-5 and passed engineering validation tests, which allowed the client to move into design validation, refinements, and alpha-tests (aka DVT). 

Work with EnCata allowed our customer to concentrate on core agriculture technology development and the developed prototype became a bench for testing the crucial software and AI/ML algorithms. Importantly, EnCata provided the company with essential hardware engineering, IoT and consumer product development expertise, which allowed the client to focus their precious time on their core activities.

3 patents

filed after EnCata’s work

2 models

we proposed for market entry

+37% crop yield

compared to industrial farming

Our Role

  • Feasibility Study (business, technology, engineering)
  • Conceptual design
  • Industrial design
  • Custom PCB electronics development
  • Firmware (embedded software) development
  • Mechanical and CAD design
  • Prototype manufacturing
  • Prototype tests

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