Team Churro: Sharon Grimshaw, Maggie Su, Louis Yi, Morgan Zheng

Revisited Goals  Safe and sturdy  All connected to one  Easy to use and maintain  One container to load  Cooking time preset  User choice in length and shape of churro

Logistics  Schedule  Still a little behind schedule  Planned to have two prototypes, changed to one virtual prototype (continually updated) and one physical prototype (modified to match the virtual prototype)    Budget (currently at $130)  Realized that we didn’t have all the parts we needed so we had to do a second round of ordering Trouble with what voltage to use, 5V or 12V Getting closer to the $250 but still on track to be under budget

Mechanical: Overview

Mechanical: Modifications Left: Extruder device Right: Exchanger

Mechanical: More Modifications in progress Sugar tray shaker Churro ramp

Mechanical: Current Look

NEXT STEP: Fully assembling and testing subsystems

Electrical: Overview

Electrical: Problems  Steppers  Speed/Torque  Stopping  Servos  Power draw  Thermocouple  Amplifier connections

User Input

Mechanical: Buttons

Pros:  Easier to keep clean  Simple to make Cons:  Require Arduino pins  Where to place within system?

Software: GUI

Pros:  Easy to understand  More options to choose from  Less Arduino pins Cons:  Laptop near food  Complicates use of Arduino libraries  Overcomplicating user input?

Next Steps  Finish construction of the mechanical system  Solving current issues – transistors, cutting power during holding, DC motor  Determine how to interface Arduino/thermocouple  Testing electrical/software with mechanical system

Questions, Comments, or Concerns?