1. MEATEOR 3/4/2015 Troy Kremer – speaker 1 Chris McClure – speaker 2 Thomas Johnson Justin Lord Andrew Rains

2. Overview Design requirements People’s opinion About the Device Mechanical Overview Electrical Overview Software Overview Upcoming Goal

3. Background The First Build “micro factory” What is the Chill Hub Only other device is the “Milky Weigh”

4. Design requirements (what they wanted us to do) The requirement of this project Freedom to choose what device to make Took surveys to gauge interest

5. What the People Want We surveyed several people Users ranked their preferences The Meat Thawer design won out.

6. What is Feasible (Heating Element) We had several concerns while deciding on a method to heat the unit. Thaw time 1 USB port Doesn’t effect fresh food User Friendly Tray is easy to remove Sanitizes Aesthetically Pleasing

7. MEATeor Requirements Operates with the Chill Hub Communicate over USB Operate within the power output range Must not heat the Refrigerator Must be able to accept user inputs Must meet handling standards

8. Functional Model

9. Morph Matrix

10. Proof of Concept Elements of Design Inclined metal sheet Reservoir for run off liquids Hole for UV light and hotplate Takeaways Remove wasted space Stationary hot plate Sheet metal used to improve heat transfer

11. Alpha Prototype Elements of Design Included enclosure Simplified the drawer Included space for electronics and touchscreen Tested manufacturing procedure Hotplate created and tested Takeaways Move electronics to back Drawer made shorter and wider Hot plate worked well Laser cutting preferred for manufacturing

12. Beta Prototype Moved electronics to back of product Used entire box width for drawer Remade heater for elevation and angle needs Slide-in section for heater contact with tray

13. Board Options Raspberry Pi (Model B) Arduino (Uno) Cypress (CY8CKIT-049)

14. Board Options BoardInput Power I/O pinsOperate off of USB Ease of implementation (1-easy to 10-hard) Cost (To nearest USD) Raspberry Pi (Model B) 0.5 W [1] 40YES (back- power) 5$35 Arduino (Uno) 0.2325 W [2] 6/14 (w/ pwm) YES & NO (Not advised) 3$23 Cypress (CY8CKIT- 049) 25 μW [3] 18YES (100%) 4$4 [1] http://www.raspberrypi.org/products/model-b-plus/http://www.raspberrypi.org/products/model-b-plus/ [2] http://gadgetmakersblog.com/arduino-power-consumption/http://gadgetmakersblog.com/arduino-power-consumption/ [3] http://www.cypress.com/?docID=48142http://www.cypress.com/?docID=48142

15. Internal Interfaces Chill Hub interfaces: Universal Serial Bus (USB) Power, fridge monitoring, and Chill Hub / Defroster data transfer Connections from microcontroller: General Peripheral Input/Output (GPIO) Heating element Sanitization element Safety Switch LED array for user panel Special Connections Thermal Sensors

16. External Interfaces Chill Hub Interfaces: 20 Watt (5V, 4A) power supply From Chill Hub’s PSU Only 10 Watts available for our device Internet connectivity Through Chill Hub’s Raspberry Pi Fridge sensors and information First Build Green Bean module User Interfaces: IOS application User can see status of device User can begin new warming cycle

17. System Diagram

18. Electronics Cypress controller is used Driver Circuits Powers UV light and hot plate Thermocouples used for temperature monitoring Safety switch to shut off UV light and heater if drawer is opened

19. Chill Hub Data Flow

20. System Operation The system awaits a user input on the IOS application Type of meat to be defrosted Time meat should be thawed Data is sent from the application to firebase Data is pulled from firebase to the Cypress Board to the ChillHub Meat heating element begins thawing meat When the warming cycle is done: The user will be notified The sanitization element will activate

21. Thermal Analysis 1-D Transient Nodal Analysis Thermal properties of chicken used

22. Test Results ¼ lb hamburger and ¼ lb chicken breast were used Hamburger thawed completely in 100 minutes Chicken thawed completely in 115 minutes

23. Renderings

24. Cost of Manufacturing

25. Future Steps Working with First Build to finish product Implement ChillHub connectivity Update device to meet actual power supply Replace faux sanitization element with 5V UVC lighting Complete element monitoring and adjustment Complete iOS app development Looking to complete accessory over the summer.

26. Conclusion Successful proof of concept Concept could be implemented in refrigerator and freezer Could be sold as part of a Chill-hub or as a kit for existing units Can be expanded for different product series

27. QUESTIONS?