Bakers DJ By Troy Mills ELM-Final Project

Contents Problem Statement Background Solution Project Design Parameters System Diagram State Machine

Problem Statement To design and build a machine that would decorate cakes, cookies, and anything that is placed upon it with a frosting design predetermined by the owner.

Background In the baking occupation decoration is very important to make a product that is aesthetically pleasing for customers. This decorating takes lots of time and is very tedious work. Not all bakers are good decorators. In the baking occupation decoration is very important to make a product that is aesthetically pleasing for customers. This decorating takes lots of time and is very tedious work. Not all bakers are good decorators.

Background Continued Machines are out there for certain types of decorating but they are very expensive. The average mom and pop bakery cannot afford such a device. These machines are also very large and used to pushing out thousands, the average low level baker might need a few hundred max. There are also screen printers for photo images but this can give the confectionaries a fake look.

Constraints A device that is cheap enough for normal bakeries to own, that will utilize an automated table along with frosting extension arm to decorate confectionaries in seconds. By limiting the mechanics the design will have more complex software, but comparatively the cost will be greatly reduced. Eventually a baker will be able to load a predesigned monochromatic design from Microsoft paint into the machine and the design will be produced using continuous line design.

Prototype Parameters 4 inch maximum cookie. 3 predetermined designs. Monitor frosting usage amount needed for design. Limited to one frosting color.

Solution Polar Coordinate system, instead of using X,Y Coordinate system: – Use a rotating mechanism to move cookie to every known angle. – An Arc mechanism will deliver frosting to any radius. Frosting dispenser will be similar to toothpaste tube, with a hose mounted on radial mechanism. User interface will be 4 buttons: Reset, Pattern 1- 3.

System Diagram

Rotary Table Break Down Rotary table will be run by a 5 Volt stepper motor with timing belt, and pulleys.

Sizing Stepper Motor

Stepper Motor

Electrical Design HCS08SH8 Microcontroller 20-pin – Power = 1 pin – Ground = 1pin – Stepper Motor (Rotary Table) = 4 pins – Stepper Motor (Frosting Extruder) = 4 pins – Error LED = 1 pin – Frosting LED = 1 pin – Reset = 1 pin – Servo Motor (Frosting Arm) = 1 pin – Design Buttons = 3 pins – Limiter button = 1 pin Total 18 pins

Electrical Schematic

Electrical Board Design

General Operation

Conclusion Cost Effective Simple to Use Acceptable accuracy Marketable

Pattern Examples

Schedule

Budget Timing Belt2.71 Stepper Motor7.95 Servo Motor15 Miscellaneous Parts50 Timing Pulleys20.58 Frosting Hoses30 Sleeve Bearing.83 Frosting15 Cookies

Questions?