1. McKenzie Worden James Forbes Benjamin Kerlin Lawrence Osai Ryan Cody Rochester Roots Horticulture Lab1

2. Agenda 1 Background & Problem Statement 2 Original Customer/Engineering Requirements 3 Design Process – MSDI Summary 4 MSDII Testing Problem Tracking Final Prototype & Customer/Engineering Requirements Rochester Roots Horticulture Lab2

3. Project Background Rochester RootsFreddie Thomas Montessori SchoolSTEM LearningScientific MethodGoals Rochester Roots Horticulture Lab3

4. Project Statement & Deliverables Problem Statement The experimental horticulture lab is a design project with the purpose of creating a small indoor seed starting lab for the use of elementary students. The lab will be built into the students curriculum, teach the students the scientific method, mimic systems used in real scientific studies, and produce statistically significant results. The students will have access to their plants and be able to control growth parameters such as water, soil, temperature, and light. Deliverables Functional prototype Experiment Lab facilitating learning STEM concepts Rochester Roots Horticulture Lab4

5. Original Customer Needs Rochester Roots Horticulture Lab5 Customer Rqmt. # ImportanceCategoryDescription CR11SafetySchool Safe CR31TeachingIntuitive user interface (For students) CR41ControlAble to measure water content in the soil CR51ControlAble to control amount of water added CR61ControlAble to filter the chlorine out of the water CR71ControlAble to record water, light and temperature conditions CR81ControlAble to control amount of light provided CR91ControlAble to measure amount of light provided CR101ControlGives user information on room and unit conditions CR111Physical ConstraintsFits on a table in the classroom ( 33" x 322" ) CR121Physical ConstraintsPortion containing plants is portable by 3rd grader CR131Physical ConstraintsMouse Proof CR141Physical ConstraintsAesthetics (Match the theme of the school) CR151Physical ConstraintsMovable by students (3rd - 6th) CR161ExperimentAble to produce enough plants to find statistically significant differences. CR171ExperimentAble to separate plants types or conditions for different teams CR181ExperimentAble to grow a variety of different plant types CR191ExperimentAble to experiment with different environmental conditions CR201ExperimentFacilitates user to keep a record of data CR211ExperimentVisable results (Graphics) CR221CostHas long life cycle CR231CostLess expensive than the provided budget CR242TeachingAssists teachers to meet curriculum (STEM learning/Common Core Standards) CR252TeachingActive learning. Involves student in each step of the experimental growing process CR262TeachingUsable by different ages CR272CostEasy to repair/Low Maintenance CR283TeachingTeam Oriented CR293Physical ConstraintsMade from sustainable materials CR303Physical ConstraintsEasy to clean CR313Physical ConstraintsClear planting container (See roots grow and aesthetics) Importance: (1=must have, 2=nice to have, 3=preference only)

6. Original Engineering Requirements Rochester Roots Horticulture Lab6 rqmt. #ImportanceSource Engineering RequirementUnit of MeasureMarginal Value S11SafetyNo live wiresmA<1 S21SafetyNo small partscm (D) x cm (l)3.175 x 5.715 S31SafetyFDA safeN/A S43SafetyWeightlbs / unit15 S51ControlsWatercups / day2 S61ControlsLightfc / hour16,000 S71ControlsTemperatureC0C0 20-35 S81ControlsFiltered waterLiters5 S91TeachingTimehours / day1 S102TeachingGrowth timedays100 S112TeachingNumber of students involved#10 S121ExperimentDuribility#1,000 S132ExperimentDrop testm1 S142ExperimentData requirements for satistics#n20 S151CostStaying under Budget$800 S161CostLong life cyclecycles5000 S171Physical ConstraintsFit on tablem2m2 6.8 S181Physical ConstraintsHeight constraintsm2 S191Physical ConstraintsMouse Proofmm (D)6.35 S202Physical ConstraintsPlant growthm2m2 0.25 S212Physical ConstraintsEasy to cleanmin / day15 S222Physical ConstraintsRecycled materialsBinaryN/A S232Physical ConstraintsAesteticly PleasingBinaryN/A Importance: (1=must have, 2=nice to have)

7. Design Process – System Level Used benchmarking & Pugh analysis to develop system level proposal Rochester Roots Horticulture Lab7 System Pugh Selection Criteria Heating Pad, Digital Thermometer, Closed/Door, Vitamin C, RFID Light Sensor, Fluorescent Heating Lamp, Digital Thermometer, Open System, Vitamin C, Datalogger, Fluorescent Heating Pad, Arduino, Closed/Door, Coffee Filter, RFID Light Sensor, HID Light Safety Datum -S Controls -+ Aesthetics -- Teaching S+ Plant Safety -+ Experiment -+ Cost ++ Physical Constraints -S Total -54 Safety + Datum + Controls S+ Aesthetics S- Teaching S+ Plant Safety ++ Experiment S+ Cost -- Physical Constraints ++ Total 24 Safety S- Datum Controls -- Aesthetics ++ Teaching -- Plant Safety +- Experiment -- Cost -+ Physical Constraints S- Total -2-5

8. Design Process – System Level Changes to Customer Requirements Filter Provided Lights Provided Temperature Control Instead of heating, cooling would be required Rochester Roots Horticulture Lab8 HID Berkley Temperature Experiment DayTime Container Small Medium Air TempSoil TempAir TempSoil Temp Tuesday 8:30 AM 72707270 12:30 PM78 3:30 PM76787678 4:00 PM78797879 4:30 PM82818279 5:00 PM83828380 Wednesday 8:30 AM71 72 3:30 PM82898288 Thursday 8:30 AM69706972 12:30 PM78747875 3:00 PM72 74 3:30 PM80788075 4:00 PM808180

9. Design Process – System Level Rochester Roots Horticulture Lab9 CAD Model

10. Design Process – Detailed Design Rochester Roots Horticulture Lab10 Version 1: Three modules Acrylic Version 2: Three modules Acrylic with 4 mesh panels Version 3: Three modules Mesh with acrylic doors Version 4: Three modules Mesh

11. Design Process – Final Model Two modules; all mesh Changes in requirements Not all variables would be varied simultaneously – did not need three modules to accommodate three light settings Rochester Roots Horticulture Lab11

12. 1/8” 6061-T6 Al FOS, price, availability 2 ribs allow for maximum FOS Welded edges Easier machining Water tight basin Rochester Roots Horticulture Lab12 Design Process – Final Model Sheet Metal Basin Coated in Rust-Oleum Leak Seal Black Rubber Coating “Prevents moisture penetration, rust and corrosion”

13. Design Process – Detailed Design Changes in requirements All conditions except temperature will be manually monitored and changed by students/users Transition from collaboration with other groups Light Meter LX1010B 0 – 50,000 Lux Luxmeter LCD digital display Water/pH Meter Thermostat Rochester Roots Horticulture Lab13

14. Design Process – Heat Transfer Model Using Worst Case Possible Use Steady-State Approach Rochester Roots Horticulture Lab14

15. Design Process – Detailed Design Cooling System 1 fan for each module 2 fans total for system 200 CFM’s Determined through heat transfer model Sensor used with feedback loop Will turn fan on when temp exceeds setting Rochester Roots Horticulture Lab15

16. Honeywell Rectangle Electronic Non- Programmable Thermostat RTH111B1016 Cheap and easy to implement Can change threshold temperature Only used for cooling Resistor extended to reach soil to measure soil temp & wired directly to fan to turn on fan when soil reaches temp on setting Rochester Roots Horticulture Lab16 Design Process – Detailed Design Cooling System

17. Design Process – Additional Requests Water Dispensing System Hydrofarm Dual Outlet Mechanical Timer Can set output to be on for any number of 15 minute intervals Used to create a watering schedule on weekends and holiday breaks Rochester Roots Horticulture Lab17 Dramm Heavy-Duty Brass Fogg-It Nozzle Fine Water Pressure Spray Lawn Garden Sprays a 3 foot area when placed 3 feet above soil Can control area of watering and amount of water by adjusting placement, height, angle, and water pressure

18. Design Process – Additional Requests Water Dispensing System Ace 1/10 HP Multi Purpose Utility Pump (GFR110-APL) Pumps up to 660 gallons per hour Can be used with regular garden hose Controlled by 24 hour timer 18 Other Accessories Water tank to store water Brass multi-hose water splitter Regular garden hose Extra brass connectors Total price of water supply system-100 dollars Rochester Roots Horticulture Lab

19. Customer Needs – End of MSDI Rochester Roots Horticulture Lab19 Customer Rqmt. # ImportanceCategoryDescriptionComments/Status CR11SafetySchool Safe CR31TeachingIntuitive user interface (For students) CR41ControlAble to measure water content in the soilsensor CR51ControlAble to control amount of water addedmanually dispense water CR61ControlAble to filter the chlorine out of the waterberkley filter CR71ControlAble to record water, light and temperature conditionssensors/meters CR81ControlAble to control amount of light providedadjust lights CR91ControlAble to measure amount of light providedmeter CR101ControlGives user information on room and unit conditionssensors/meters CR111Physical ConstraintsFits on a table in the classroom ( 33" x 322" )33" x 8' CR121Physical ConstraintsPortion containing plants is portable by 3rd grader11" x 21.25" trays CR141Physical ConstraintsAesthetics (Match the theme of the school) CR151Physical ConstraintsMovable by students (3rd - 6th)modular (2 modules) CR161ExperimentAble to produce enough plants to find statistically significant differences. CR171ExperimentAble to separate plants types or conditions for different teamsmodular/4 trays per module/up to 72 plants per tray CR181ExperimentAble to grow a variety of different plant typesmodular/4 trays per module/up to 72 plants per tray CR191ExperimentAble to experiment with different environmental conditionsmodular/4 trays per module/up to 72 plants per tray CR201ExperimentFacilitates user to keep a record of datasensors/meters CR221CostHas long life cycle/Sturdydurable materials CR231CostLess expensive than the provided budgetcost analysis CR241Experiment(Automated) Water Dispensing System CR252TeachingAssists teachers to meet curriculum (STEM learning/Common Core Standards) CR262TeachingActive learning. Involves student in each step of the experimental growing process CR272TeachingUsable by different ages CR282CostEasy to repair/Low Maintenance CR302Physical ConstraintsLights Able to Hang from the System CR313TeachingTeam Oriented CR323Physical ConstraintsEasy to clean Importance: (1=must have, 2=nice to have, 3=preference only) Removed: Mouse Proof Clear Planting Container Made from Sustainable Materials Visible Results – Graphics

20. MSD II – Build & Test Tests Performed: Strength of Lab Testing of Cooling System Accuracy of Thermostat & Sensor Functioning Does it turn on when over temp set & turn off when temp returns to range? Rochester Roots Horticulture Lab20

21. Strength Test Rochester Roots Horticulture Lab21

22. Strength Test Rochester Roots Horticulture Lab22

23. Cooling System Test To test the cooling system each individual component was tested separately and then the entire system was tested Thermostat accuracy test Switch activation test Fan speed test Cooling system test Rochester Roots Horticulture Lab23

24. Problem Tracking Problem Number Identifying & Selecting Problem PSP 1 Analyzing Problem PSP 2 Generating Potential Solutions PSP 3 Selecting & Planning Solution PSP 4 Implementing Solution PSP 5 Evaluating Solution PSP 6 R1R2R3Y4Y5G6 1 BUDGET Shipping cost(s) could make us over budget. Majority of budget is for metal. Unforseen problems Quotes from different companies. Pick up majority of material so we don't have to worry about shipping. Analyzing different quotes Received 200 dollars additional funding Solution successful 2 Accessing proper fansCFMs required uncommon Resolve problem to be sure we need 200CFM, otherwise special order Problem resolved, confirm we need 200 Ordered fans onlineSolution successful 3 Will fans damage plants?CFMs required very powerfulWaiting on testing Mount fan and turn it on to see if plants are damaged testing was conductedSolution successful 4 Design of panels Original design may not be strong enough, not enough material Rivets? Testing to see what is the best method Minimizing pieces to increase strength Ordered additional materialSolution successful 5 Thermostat not turning on after soldering Board may have been damaged during soldering process Review processes with professors and soldering expert Be more precise with soldering techniques and request help from soldering expert Perform modifications with new process and guidance Solution successful 6 Sharp edges Edges may be dangerous - cut/scratch Sand, cover (metal, tubing, etc) Tubing was cheap and easy to implement Put tubing over edges & sandedSolution successful 7 Tight mesh - aesthetics Mesh was not as sturdy as anticipated, sagging Support brackets, adding support beams Support brackets made and added support beams Machining and assemblingSolution successful 8 Fans are heavy - will mesh hold them? Mesh is not strong enough for heavy fans Structural support from sheet metalMount fan using metalMount fan to metalSolution successful Rochester Roots Horticulture Lab24

25. Final Customer Requirements Removed: Automated watering system Lights hang from system Berkley filter not a feature of our design but used in system Rochester Roots Horticulture Lab25 Customer Rqmt. #ImportanceCategoryDescriptionComments/Status CR11SafetySchool Safe CR31TeachingIntuitive user interface (For students) CR41ControlAble to measure water content in the soilsensor CR51ControlAble to control amount of water addedmanually dispense water CR61ControlAble to filter the chlorine out of the waterberkley filter - not included in group's design CR71ControlAble to record water, light and temperature conditionssensors/meters CR81ControlAble to control amount of light providedadjust lights CR91ControlAble to measure amount of light providedmeter CR101ControlGives user information on room and unit conditionssensors/meters CR111 Physical ConstraintsFits on a table in the classroom ( 33" x 322" )32" x 8' CR121 Physical ConstraintsPortion containing plants is portable by 3rd grader11" x 21.25" trays CR141 Physical ConstraintsAesthetics (Match the theme of the school) CR151 Physical ConstraintsMovable by students (3rd - 6th)modular (2 modules) CR161ExperimentAble to produce enough plants to find statistically significant differences. CR171ExperimentAble to separate plants types or conditions for different teamsmodular/4 trays per module/up to 72 plants per tray CR181ExperimentAble to grow a variety of different plant typesmodular/4 trays per module/up to 72 plants per tray CR191ExperimentAble to experiment with different environmental conditionsmodular/4 trays per module/up to 72 plants per tray CR201ExperimentFacilitates user to keep a record of datasensors/meters CR221CostHas long life cycle/Sturdydurable materials CR231CostLess expensive than the provided budgetcost analysis CR242Teaching Assists teachers to meet curriculum (STEM learning/Common Core Standards) CR252Teaching Active learning. Involves student in each step of the experimental growing process CR262TeachingUsable by different ages CR272CostEasy to repair/Low Maintenance CR283TeachingTeam Oriented CR293 Physical ConstraintsEasy to clean Importance: (1=must have, 2=nice to have, 3=preference only)

26. Final Engineering Requirements Removed: Control – Filter water Rochester Roots Horticulture Lab26 Did not achieve: Stay under (original) budget – received additional funding Requirement. #ImportanceSource Engineering RequirementUnit of MeasureMarginal ValueComments/Status S11SafetyNo live wiresmA<1 S21SafetyNo small partscm (D) x cm (l)3.175 x 5.715 S31SafetyFDA safeN/A S43SafetyWeightlbs / unit15 S52SafetyMesh edges covered/smoothtouchNo scratches S61SafetyProtection from fan bladesBinaryN/A S71ControlsWatercups / day2 S81ControlsLightfc / hour16,000 S91ControlsTemperatureC0C0 20-35 S101TeachingTimehours / day1 S112TeachingGrowth timedays100 S122TeachingNumber of students involved#10 S131ExperimentDurability#1,000 S142ExperimentDrop testm1 S151ExperimentWeightlbs200 S162ExperimentData requirements for satistics#n20 S171CostStaying under Budget$800 increased funding from customer S181CostLong life cyclecycles5000 S191Physical ConstraintsFit on tablem2m2 6.8 S201Physical ConstraintsHeight constraintsm2 S212Physical ConstraintsPlant growthm2m2 0.25 S222Physical ConstraintsEasy to cleanmin / day15 S232Physical ConstraintsAesteticly PleasingBinaryN/A Importance: (1=must have, 2=nice to have)

27. Final BOM Rochester Roots Horticulture Lab27 Structure Part/Description# NeededCost (ea.)Cost (total) 80-20 3-way Corner Connectors8 $ 9.86 $ 78.88 Adjustable Friction Hinges8 $ 6.71 $ 53.68 Swivel Leveling Feet8 $ 5.95 $ 47.60 Web Flats8N/A Round-Grip Pull Handles4 $ 1.44 $ 5.76 Fasteners (packs of 4)32 $ 1.85 $ 59.20 Surface Mount Magnetic Catches4 $ 2.46 $ 9.84 80-20 10 ft section4 $ 31.59 $ 126.36 4 ft section1 $ 14.20 Mesh Paneling 50 x 2 ft sections1 45.32 5 ft x 2 ft section1 7.21 Sheet Metal 4 ft x 3 ft x 1/8 in sections2105.75211.5 3 ft x 2 ft x 1/8 in sections175.76 2 ft x 2 ft x 1/16 in sections627.75166.5 Structure Total: $ 901.81 Cooling System Part/Description# NeededCost (ea.)Cost (total) Honeywell Digital Thermostat2 $ 24.50 $ 49.00 3 Pin PCB Board4 $ 1.25 $ 5.00 Honeywell 0805 Thermistor10 $ 0.57 $ 5.70 Dell 12 V Power Supply2 $ - PMDC Brushless Fan2 $ 13.50 $ 27.00 Cooling Total:86.70 Extras Part/Description# NeededCost (ea.)Cost (total) Rust Oleum Leak Seal Black Rubber Coating1 $ 9.97 Edge Trim w/ Metal Core25 ft $ 22.50 Extras Total $ 32.47 System Total: $ 1,020.98

28. Final Prototype Rochester Roots Horticulture Lab28

29. Questions? Rochester Roots Horticulture Lab29