Transcript Chur-Robot - Franklin W. Olin College of Engineering

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)
 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
 Budget (currently at $130)
 Getting closer to the $250 but still on track to be underbudget
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
Software: GUI
Pros:
 Easier to keep clean
 Simple to make
Cons:
 Require Arduino pins
 Where to place within
system?
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?