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SDP 2012 | Team McLaughlin Salvatore Cacciatore, Kenny Neyhart, Benjamin Oven, Tony Saloio Place N Paste Assisted Toothpaste Dispenser Final Project Review Slide 2 2 SDP 2012 | Team McLaughlin Outline Project Overview Requirements Overview Components Overview Problems Results Budget Demonstration Slide 3 3 SDP 2012 | Team McLaughlin Project Overview Toothpaste Dispenser for special needs classroom in West Springfield, MA Students lack fine motor skills Class will come to see projects on May 4 Slide 4 4 SDP 2012 | Team McLaughlin Requirements 1.Dispense pea-sized toothpaste onto brush 2.Will hold toothbrush such that the machine and toothbrush will stay sanitary 3.Toothbrush will be placed in a way such that users lacking fine motor skills can insert toothbrush 4.Product will take no longer than 20 seconds from when toothbrush is correctly inserted to return loaded toothbrush 5.Product size will not obstruct normal use of schools single occupancy bathroom 6.Product will be designed such that it will guide toothbrush motion once it is placed into holder Slide 5 5 SDP 2012 | Team McLaughlin Components Overview Power Source Microprocessor Motors Interface Dispensing Pump Slide 6 6 SDP 2012 | Team McLaughlin Components Power Source Sealed Lead Acid (SLA) Battery 12V 9Ah Rechargeable with included charger Can power project for 7 days (if power is left on 24/7) Replacing battery is difficult Slide 7 7 SDP 2012 | Team McLaughlin Components - Microprocessor Freeduino Free Very power efficient Controls project through input switches and output devices Has built-in failsafe code to help ensure stability Slide 8 8 SDP 2012 | Team McLaughlin Components Motors DC Motor Rotates the interface Controlled by limit switches and cam Slow, but very efficient When running entire project draws only 130mA Powerful, preventing human interference Linear Actuator Activates the dispensing pump Provides needed force Returns to zero position on power reset automatically Can be set very precisely Slide 9 9 SDP 2012 | Team McLaughlin Components - Interface Designed using Pro/Engineer Printed using 3D plastic Printer Funnel Design works with toothbrush adapter Brush is held with magnet Magnet also doubles as failsafe signal Slide 10 10 SDP 2012 | Team McLaughlin Components Dispensing Pump Using Touch N Brush pump Designed for Dispensing toothpaste Connected to linear actuator for dispensing Securely attached to bottom of enclosure for maximum stability Slide 11 11 SDP 2012 | Team McLaughlin Problems Motors run slower than originally anticipated in October Motion takes ~30 seconds (did not meet 20 second goal) Future toothbrush adapters will need to be made before May 4 Components are accessible to user Enclosing top half is impractical Slide 12 12 SDP 2012 | Team McLaughlin Results - Requirements 1.Dispense pea-sized toothpaste onto brush 2.Will hold toothbrush such that the machine and toothbrush will stay sanitary 3.Toothbrush will be placed in a way such that users lacking fine motor skills can insert toothbrush 4.Product will take no longer than 20 seconds from when toothbrush is correctly inserted to return loaded toothbrush 5.Product size will not obstruct normal use of schools single occupancy bathroom 6.Product will be designed such that it will guide toothbrush motion once it is placed into holder Slide 13 13 SDP 2012 | Team McLaughlin Budget Enclosure: $35.00 Dispenser: $15.00 Freeduino: FREE Sensors and Switches: $13.71 Battery: $49.36 DC Motor: $47.62 Linear Actuator: $97.99 Mounting Hardware: $30.00 TOTAL: $360.30 Unused Parts: $71.62 (plastic mold and extra DC motor) Slide 14 14 SDP 2012 | Team McLaughlin Demonstration 1.Turn Power on by flipping rear switch up 2.Place toothbrush into position 3.Press red button on front of enclosure 4.Once motion has completed, remove toothbrush 5.Brush Teeth