Midway Design Review Team 3 Smart Hydroponic Greenhouse

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 Department of Electrical and Computer Engineering 1

Team Members Michael D’Anna Samantha de Groot Maxwell Joyce Shaun Palmer Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 4

Block Diagram Department of Electrical and Computer Engineering 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’x 4’), easily movable Yield 6 fruiting plants Reusable App with simple UI – easy for people to use and learn Department of Electrical and Computer Engineering 6

Requirements Analysis: Inputs and Outputs Inputs • Sensor data • Humidity • p. H • Temperature • Moisture in growing medium • Plant Database Outputs • Lighting cycle control • Hydroponic pump control • Nutrient dispersal control • p. H dispersal control Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 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) Department of Electrical and Computer Engineering 11

Hydroponics – Progress (Shaun) Department of Electrical and Computer Engineering 12

Hydroponics – Moving Forward Program control unit to integrate pumps and nutrient/p. H regulation into finite state machine design (2/24) Fabricate a p. H regulation system (1/27) • Same exact concept and circuitry from nutrient dispersal Plant Seeds (2/27) Department of Electrical and Computer Engineering 13

Sensors – Progress (Sam) Hygrometer, ADC p. H Sensor Water Level Float Switch Temperature and Humidity Sensor Department of Electrical and Computer Engineering 14

Sensors – Moving Forward Interface p. H 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 Department of Electrical and Computer Engineering 15

Control Unit – Progress (Team) Coded a mini routine to: • Turn on and off lights • Turn on and off each pump • Mix a 20 ml shot of nutrients with water • Use float sensor to fill nutrient solution with 2 gal of water • Report hygrometer readings on android application Department of Electrical and Computer Engineering 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 Department of Electrical and Computer Engineering 17

App – Progress (Max) Established communication with Pi • Capable of sending sensor data to phone Simple android application laid out with buttons and menus Department of Electrical and Computer Engineering 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) Department of Electrical and Computer Engineering 19

CDR Deliverables Design custom voltage regulator PCB Finish p. H 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 Department of Electrical and Computer Engineering 20

Demo Department of Electrical and Computer Engineering 21

Questions? Department of Electrical and Computer Engineering 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 k. WH per lb = $0. 75 per lb at $0. 19 per k. WHs Department of Electrical and Computer Engineering 23