Jenga Earthquake Table
NU Toys: Club Project (2017)
PROBLEM STATEMENT:
Construct a randomly vibrating base table for a game to Jenga to increase the game's difficulty.
CONSTRAINTS:
Budget limited to $50. Due to fall e-board responsibilities I set myself a deadline to finish this project before 09/2017, leaving about one month to complete the first prototype.
Jenga Earthquake Table
NU Toys: Club Project (2017)
PROBLEM STATEMENT:
Construct a randomly vibrating base table for a game to Jenga to increase the game's difficulty.
CONSTRAINTS:
Budget limited to $50. Due to fall e-board responsibilities I set myself a deadline to finish this project before 09/2017, leaving about one month to complete the first prototype.
Jenga Earthquake Table
NU Toys: Club Project (2017)
PROBLEM STATEMENT:
Construct a randomly vibrating base table for a game to Jenga to increase the game's difficulty.
CONSTRAINTS:
Budget limited to $50. Due to fall e-board responsibilities I set myself a deadline to finish this project before 09/2017, leaving about one month to complete the first prototype.
Rogue 2: Whiteboard Cleaning Robot
Flex Innovation Labs: Independent R&D Project
PROBLEM STATEMENT:
Create a non-tethered, whiteboard cleaning robot that can clean any sized board and dock when it's done.
TEST AND DESIGN PHASES
One test platform for the turbine used to hold R2 against a board.
- I performed testing to characterize the turbine's weight capacity and ideal distance from the board
- Thrust rather than suction was most effective at holding weight and conserving battery
A test platform for autonomous steering.
- Mechanical bump sensors needed to be replaced for ultrasonic sensors
- Encoder wheels helped robot drive straight
- Interactions between motors, encoders and sensors were the most difficult to program
Fourth and final design of spinning cleaning wheel.
- Ball casters under the ring were most effective reducing sliding friction
- Small spur gears experience more stress than large internal gear
- Two driven and one drive gear hold ring in place radially
Photo from an early system level test.
- Wheel motors need to be high torque
- Material on wheels selected to create high friction on whiteboard
- Overall weight was ~1kg. Turbine could hold ~1.75kg max.
- Separate power supplies for wheel motors and turbine needed
Final SolidWorks design.
- A simple, lightweight enclosure added
- A second ultrasonic sensor added and programmed to detect docking station
- Delegated docking station design to a mechanical team member
- Created pointed tail to fit into dock
Whiteboard Cleaning Robot: Final Prototype
SKILLS GAINED:
- SolidWorks design for 3D printing
- Arduino programming and troubleshooting for DC gearmotors, encoders, and ultrasonic sensors
- Gear system design
- RC component integration and operation
-Mechanical + electrical system integration, test, and troubleshooting
-Hands-on rapid prototyping
-Project management
Close-up of cleaning ring components
Bottom view of R2