Automated Countertop Greenhouse

Team: Emma Bean

Project

Plants growing in a little greenhouse like apparatus

Problem Description

Many individuals living in apartments or small spaces lack the time, space, or experience required to maintain a traditional garden.

  • Goal: simplify plant growth in small living spaces

Project Objective

Design an automated system to monitor and regulate:

  • Soil moisture
  • Lighting
  • Temperature and Humidity

Why It Matters

  • Reduces effort required for plant care
  • Demonstrates real world embedded systems application
  • Promotes sustainability and self sufficiency

System

System Diagram. (read left to right, top to bottom) User inputs (Button Press) User Interface, Display, Microcontroller, Internal Block Diagram. Environmental Inputs (Senosr inputs), Sensors: Soil Moisture, Temp, Humidiity, water level. Actuators: Water pump, Grow Lights, Fan. Watering Lighting Ventilation

Methods

Microcontroller based architecture that integrates environmental sensors and actuators.

  • Soil moisture (ADC)
  • Temperature/humidity (I²C)
  • Water level sensor
  • Pump, fan, LED grow lights
(Left-side, read top to bottom) User Inputs, Enivonrmental Inputs (Sensor Inputs). (middle, read top to bottom) Top Level, Countertop Greenhouse System. (Right side, read top to bottom) Display, Lighting, Watering, Ventilation

Approach

Time-based control loop was implemented. All sensors sample every 30 minutes. Threshold based-decisions:

  • The pump activates when soil moisture is low
  • The fan activates when humidity exceeds a set limit
  • Grow lights operate on a 12-hour cycle
  • A warning is displayed when water level is low

Conclusion

Key Results

  • The system successfully automated watering, lighting, and environmentalmonitoring.
  • Testing showed reliable performance in maintaining stable growing conditions.
  • The results demonstrate that a simple, time-based embedded system can effectivelysolve the problem of indoor plant maintenance in small spaces.

Future Work

  • Future development will focus on making the system more customizable, scalable, and user friendly.
  • Adjustable light intensity based on specific plant type
  • Independent watering control for each plant pot
  • Mobile app for remote monitoring and control

What Was Learned

Key lessons include the importance of modular design, thorough testing, and choosing simple control strategies that match the application.