Post Midterm Review
ME 4182
Team: 5 Guys Engineering + 1
Nathan Bessette,
Rahul Bhatia,
Andrew Cass,
Zeeshan Saiyed,
Glen Stewart
YJ Chok
Automatic Whiteboard Wiper
• Last Time
– Presented project progress to classmates
• Received reviews and questions concerning our project
• This Time
– Review comments and respond
Automatic Whiteboard Wiper
• How do you replace the erasers?
– Simple clamp design
• Thumb screws, wing nut, or simple tool removal
• Remove from the side, not from the top
Automatic Whiteboard Wiper
• How Often do erasers need to be replaced?
– Function of how much the board is used
• Possibly as often as standard erasers now
Automatic Whiteboard Wiper
• Should the ease of replacing the eraser be a
criteria for design?
– Ease of replacing eraser was taken into
consideration
• Rolled into “complexity” criteria
Automatic Whiteboard Wiper
• Would a cleaning fluid system be
implemented?
– Group consideration was given to the addition of a
cleaning fluid
• Decided it would best be suited as an add-on and not a
feature
Automatic Whiteboard Wiper
• What type of motors would be used
– Force/ torque tests will be conducted to
determine the size requirements of the motor
Automatic Whiteboard Wiper
• How would you control the whiteboard wiper?
What language would you use to code it?
– Simple microcontroller
– Possibly HC11/ HC12 microcontroller
– Coding language is dependent on microcontroller
Automatic Whiteboard Wiper
• Why is this design better than the others?
– Less complex
– Low profile
– Quadrant based
– Thin eraser
Automatic Whiteboard Wiper
• Can the whiteboard wiper be retrofitted to
chalkboards?
– This design was intended for whiteboards
• Testing was done specifically for whiteboards
• Could potentially be adjusted for chalkboards, but we
are not designing for that
Automatic Whiteboard Wiper
• Who is the target audience?
– Anyone who wants to save time and effort erasing
a whiteboard
Automatic Whiteboard Wiper
• How noisy is the system?
– It will be designed to be as quiet as possible!
• Function of the size and type of the motor
• Desire minimum sound from the motor
Automatic Whiteboard Wiper
• What about a half based system instead of
quadrant based system?
– Quadrant based system is still effective
• Greater content control with quadrant based system
Automatic Whiteboard Wiper
• How fast will the system wipe the board?
– Design for as fast or faster than hand wiping
Automatic Whiteboard Wiper
• How would the system be assembled to the
board?
– Equipment would be framed around existing
board
• Eraser is on the system that attaches around the board,
not onto
• System would require the removal of the marker tray,
but this is the only intrusion
Automatic Whiteboard Wiper
• Have you considered any additional cleaning
techniques?
– Addition of a vibratory motion to the eraser may
increase effectiveness of the system
• Microcontroller could be coded to “vibrate” eraser as it
erases
Automatic Whiteboard Wiper
• How would you control the force applied
normal to the board?
– Screw type system to lift or lower system onto
board
Automatic Whiteboard Wiper
• Impact of midterm presentation
– Class basically understood whiteboard wiper
concept
– Questions mainly dealt with clarification of
existing ideas
Automatic Whiteboard Wiper
• Next Time
– Layout Drawings
• Layout or assembly drawings
• Drawings show how the individual parts or subsystems
combine as a whole
• Encouraged to use IDEAS, AutoCAD, ProEngineering,
and/ or SolidEdge