Social Robotics Platform Colorado State University Senior Design Electrical Engineering 401

Team Team Members: Team Members: Adam Kattnig – [CMPE] Circuitry/Software, Motors Adam Kattnig – [CMPE] Circuitry/Software, Motors Meng Koh – [EE] Circuitry/Software, Motors Meng Koh – [EE] Circuitry/Software, Motors Melissa Wirtz – [EE] Circuitry/Software, I/O Melissa Wirtz – [EE] Circuitry/Software, I/O Josh Krokowski – [ME] Platform Design, Case & Motion Josh Krokowski – [ME] Platform Design, Case & Motion Tessa Alford – [ME] Platform Design, Case & Motion Tessa Alford – [ME] Platform Design, Case & Motion Project collaborators:  Anschutz Medical Center  CU Denver  Respite Care Advisor: Dr. Tony Maciejewski

The Issue Developmentally delayed children lack motor skills and understanding of control Developmentally delayed children lack motor skills and understanding of control Therapy normally takes many resources Therapy normally takes many resources Previous design has shortcomings (named Glus) Previous design has shortcomings (named Glus)

Objectives and Goals Engages child Engages child Provides feedback to teach control Provides feedback to teach control Does not require the presence of a therapist Does not require the presence of a therapist Toy is interchangeable and contains no electronics Toy is interchangeable and contains no electronics

Designed for Customer Therapist Therapist Wizard mode Wizard mode Mode selection Mode selection Patient Patient Fun toys – easy to interchange Fun toys – easy to interchange Dynamic and engaging movements Dynamic and engaging movements

Constraints Weigh < 20 pounds Platform size: 16” by 16” to 24” by 24” 3” in height Use four 1/8” jacks as input points Have soft edges (case) Platform is plugged into an outlet Easy toy detachment Perform multiple actions (8-12)

Budget $500 from Anschutz Medical $500 from Anschutz Medical $750 from ECE Department $750 from ECE Department Total = $1250 Total = $1250 Projected Costs: Projected Costs: Motors Motors Electrical motors & drivers Electrical motors & drivers Mechanical components Mechanical components The project’s costs should stay within budget. The project’s costs should stay within budget.

Design Concept Goal: Goal: Move a toy that sits on a platform Move a toy that sits on a platform Isolate toy from electronics Isolate toy from electronics Solution: Solution: Based on 3D Printer design Based on 3D Printer design Magnetically attached Magnetically attached

Motor Driver Circuit Goal: Goal: Drive three motors Drive three motors Reduce cost Reduce cost Solution Solution Custom motor driver circuitry Custom motor driver circuitry

Input/Output Goal: Goal: React to patient’s actions of different developmental stages React to patient’s actions of different developmental stages Solution Solution Use of modular input interface: 1/8” jack Use of modular input interface: 1/8” jack Provide multiple interactive modes Provide multiple interactive modes Provide buttons Provide buttons

Risks Device Usage Device Usage Mechanical stability Mechanical stability Physical danger to patient Physical danger to patient Lack of engagement Lack of engagement Design Process Design Process Time constraints Time constraints

Mitigation Plans Device Plans: Device Plans: Rapid prototyping techniques Rapid prototyping techniques Cover for moving parts Cover for moving parts Prototype and “test” with children for feedback on level of engagement Prototype and “test” with children for feedback on level of engagement Design Process Plans Design Process Plans Time saving techniques Time saving techniques Standard components when possible Standard components when possible

Failure Modes & Effects Analysis

Feasibility Analysis 3D printed parts are most prone to mechanical failure 3D printed parts are most prone to mechanical failure Finite Element Analyses performed to ensure reliable performance Finite Element Analyses performed to ensure reliable performance

Current Progress Motor driver system developed Motor driver system developed Movement subsystem nearly finished Movement subsystem nearly finished Reward (sound and lights) subsystem interfaced Reward (sound and lights) subsystem interfaced

Future Plans January: Finalize first design January: Finalize first design February: Test at Respite Care February: Test at Respite Care March: Iterative testing and design March: Iterative testing and design April: Final packaging and presentation April: Final packaging and presentation May: Documentation finalization May: Documentation finalization

Conclusion No replacement for professional therapist No replacement for professional therapist Platform is powerful tool (supplement) Platform is powerful tool (supplement) Allows children to practice Allows children to practice Gives parents at-home exercise Gives parents at-home exercise Engage Children Engage Children Provides Children with Additional Therapy Provides Children with Additional Therapy

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