Prototype Presentatiton ME 4182 Team: 5 Guys Engineering + 1 Nathan Bessette, Rahul Bhatia, Andrew Cass, Zeeshan Saiyed, Glen Stewart YJ Chok

Automatic Whiteboard Wiper Last Time – Prototype Presentation I Chose metal parts, presented pulleys, and control board options This Time – Prototype Presentation II Metal received, pulleys and cables, backing material, and control board selection

Motor Function Motors Function Properly! – (Demonstration)

Motor Controller Problems Inadequate current output Complicated interface Outputs only allow for one motor Problems with some of the controllers considered Sizing the power supplyCommunicating with the microcontroller

Motor Controller Selection 1064 – PhidgetMotorControl HC Minimum Power Supply Voltage 6V Maximum Power Supply Voltage 15V Continuous Motor Current 14A

Bill of Materials for Phidgets Motor Controler, submitted to Antonette on Nov. 3 Request to Order from RobotShop distributer New Price to reflect US Dollar: $93.25

Track & Wheel Research Alternatives to the $ Inc. wheel and bracket combo were researched. Option 1: Drawer slide C-bracket combined with fitted steel castor wheel Option 2: Creation of custom wheel and bracket combination to fit 8020 Inc aluminum profile cutout. Option 3: Stay with current selection.

Track & Wheel Research

Pulley & Cable Research Plastic pulleys of an acceptable diameter were found at The Home Depot. The removal of pulley from the bracket is possible in order to stack pulleys as needed. A mount and axel assembly can be created in order to adapt the pulleys for the prototype. A plastic sleeved steel cable with an acceptable cross-sectional diameter was found to fit the pulley, basic friction tests were performed to ensure that the cable can grip the pulley.

Rack and Pinion Rack – Molded Nylon Rack McMaster-Carr Part #57655K63 – Pressure Angle - 14 ½° – 24 Pitch – Face Width - ¼” – Overall Height - ¼” – Price: $5.33 per foot – Total price: $15.99 (3 ft) Pinion – Molded Nylon Pinion McMaster-Carr Part #57655K53 – Pressure Angle - 14 ½° – 24 Pitch – Number of Teeth - 24 – Pitch Diameter ” (A) – Hub Diameter - ⅝” (B) – Outer Diameter ” (C) – Overall Length - ⅝” (D) – Face Width - ¼” – Bore Size - ¼” – Price: $2.67

Whiteboard Mounting System Bill of Materials: (1)66’’x72’’x0.5’’ sheet of plywood (2)2’’x4’’x66’’ pine (or other suitable) wood (1)2’’x4’’x48’’ pine (or other suitable) wood (4)Mounting bolt + nut Other mounting hardware/screws/bolts

Material ordered from Carolina Fluid Components by Antonette on Oct. 29 Did not order wheel assembly due to cost; researched alternatives Status report from Antonette on Nov. 3 stated material expected to be received on Nov. 4 80/20 Inc. Order Update

Automatic Whiteboard Wiper Next Time – Prototype Review