Smart Hydroponic Greenhouse December 8, 2016 Lemon costs $1 Midway Design Review Team 3 Smart Hydroponic Greenhouse December 8, 2016 Advisor: Professor Jackson Michael D’Anna, Samantha de Groot, Maxwell Joyce and Shaun Palmer 1 1 1

Team Members Michael D’Anna Samantha de Groot Maxwell Joyce Lemon costs $1 Team Members Michael D’Anna Samantha de Groot Maxwell Joyce Shaun Palmer 2 2 2

The Problem Widespread access to local produce Food deserts Reduce carbon footprint of shipping For people without the time, space and knowledge to garden 3 3 3

Our Solution: Fully Automated Smart Greenhouse Array of sensors inside greenhouse Continuous measurements Displays information on app Sensor data used for the water pump and nutrient dispersal control 4 4 4

Block Diagram 5 5 5

Requirements Analysis: Specifications Automated Lighting control Hydroponic watering Nutrient dispersal Closed loop system to recycle water Must fit inside of a studio apartment ~(2’x4’), easily movable Yield 6 fruiting plants Reusable App with simple UI – easy for people to use and learn 6 6 6

Requirements Analysis: Inputs and Outputs Sensor data Humidity pH Temperature Moisture in growing medium Plant Database Outputs Lighting cycle control Hydroponic pump control Nutrient dispersal control pH dispersal control 7 7 7

MDR Deliverables – from PDR Hydroponic mock-up Functional nutrient dispersal system At least 1 sensor reading to control unit Lighting interfaced with control unit Android Application skeleton 8 8 8

MDR Deliverables – Progress Fully functional hydroponic system and nutrient dispersal system Two sensors reading to the raspberry pi Float Sensor Hygrometer Interfaced A/D converter Lighting and pumps interfaced with control unit Communication with pi over internet, app with menus Fully assembled greenhouse structure, applied UV film Potted growing medium mixture 9 9 9

Lighting – Progress (Mike) Designed relay circuit to control outlets with Pi Installed UV film on Plexiglas Wrote code to control timing of lights and hydroponic pumps 10 10 10

Lighting – Moving Forward Design custom PCB for voltage regulation Order by 2/10 to account for lead time Program control unit to integrate lights into finite state machine design (2/24) 11 11 11

Hydroponics – Progress (Shaun) 12 12 12

Hydroponics – Moving Forward Program control unit to integrate pumps and nutrient/pH regulation into finite state machine design (2/24) Fabricate a pH regulation system (1/27) Same exact concept and circuitry from nutrient dispersal Plant Seeds (2/27) 13 13 13

Sensors – Progress (Sam) Hygrometer, ADC pH Sensor Water Level Float Switch Temperature and Humidity Sensor 14 14 14

Sensors – Moving Forward Interface pH and temperature/humidity sensors with control unit (2/3) Use sensor data to control state machine in control unit (2/24) Exchange sensor data with Max and put it into a format on the application suitable for the user (2/10) Notifications to fill reservoirs 15 15 15

Control Unit – Progress (Team) Coded a mini routine to: Turn on and off lights Turn on and off each pump Mix a 20ml shot of nutrients with water Use float sensor to fill nutrient solution with 2 gal of water Report hygrometer readings on android application 16 16 16

Control Unit – Moving Forward Design state machine to model plant cycle from seed to harvest (1/27) Code state machine in control unit (2/24) Ensure code can run stably over a long period of time 17 17 17

App – Progress (Max) Established communication with Pi Capable of sending sensor data to phone Simple android application laid out with buttons and menus 18 18 18

App – Moving Forward Prompt user with questions (1/24) Use answers to adapt state machine (2/24) Give user notifications (2/17) Make website public (after CDR) Make website into an android web app (12/22) 19 19 19

CDR Deliverables Design custom voltage regulator PCB Finish pH control system Interface the remaining sensors Complete functionality of android application Code entire plant cycle state machine from start to finish Have plants in the process of growing 20 20 20

Demo 21 21 21

Questions? 22 22 22

Price per lb of Heirloom Tomato 100 days from seed to harvest Average tomato plant yields 20 lb of tomatoes Lights are on for an average of 18 hours a day Results: 3.96 kWH per lb = $0.75 per lb at $0.19 per kWHs 23 23 23