easelectric team 4 adam frank jackie jon. introduction nsf program: expanding world of disabled...
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EASELECTRICEASELECTRICTeam 4
Adam Frank Jackie Jon
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Introduction NSF Program:
Expanding world of disabled artists Growing demand for adjustable easels
Disabilities involving limited dexterity, limited mobility, visual acuity trouble, cerebral palsy, moderate cognitive impairment.
Increasing demand for a remotely adjustable easel with many ranges of motion
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Introduction General Requirements
Electrically adjustable Easily controlled motion Light weight, easy to store Clamp to tables of different sizes and shapes Movable in three planes as well as a controllable tilt
operation
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Introduction Safety Features:
Automatic mechanism to stop movement of easel beyond its maximal excursion
Master switch to turn device on/off Powered by a wall switch Slow movements so there is sufficient time to control
device due to delayed responsive skills of the artist No exposed cords or wires
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Market Analysis Patents
5,494,251 – “Artist’s Easel” Allows for vertical motion Has a wheeled Base
5,725,192 – “Adjustable Artist’s Easel” Allows for rotational adjustment, but no motion in
other planes 5,590,864 – “Easel for Handicapped Artists”
Provides only a tilting function
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Market Analysis Commercially Available
“The Dreamer” Allows for vertical,
horizontal and tilt motions.
Accessible only to artists who must paint with their mouths.
Not applicable to artists with other disabilities.
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Market Analysis How is Easelectric Unique?
Provides easy to use controls Electronically controlled motion in 4 planes Safe and Reliable
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Flow Diagram of Operations
Open up easelClamp onto the
tableTurn power switch
on
Use joysticks to make easel move to desired
position
Easel moves to users desire
Turn easel’s power off
Unclamp from table
Fold up easel and put away for
storage
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Design Material
Aluminum Stock provided by Independent Welding Inc.
Advantages: Lightweight Sturdy Weldable, easy to fabricate Square tubing will conceal wiring and moving actuators
throughout the easel
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Design Easel Components:
Base Clamping arms Major circuit parts
Carriage Responsible for all
motion Actuators Tracking System
1.00
24.00
4.00
1.00
3.00
1.25
17.00
22.00
2.00
1.25
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Design- Side Views of Easel
18.00
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Actuators Duff Norton Electromechanical Actuators
Specs: 100 lb. Load Capacity (300 lb. Static Load) 12VDC Motor with polarity reversal 6” and 8” Stroke lengths Speed: 1 in/sec (slows with increasing load) Aluminum Construction to match easel frame Special Offer: 4 for $400.00
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Tracking System Require strong tracks
resistant to vibration or unwanted movement when painting
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Electrical System Client requested the use of
joysticks to control motion of easel
Use of Relays to accommodate low voltage/current joystick and higher voltage/current actuator
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Electrical System Circuit requires safety mechanisms including:
Master On/Off Switch Fuse to protect from unsafe current draw Limit Switch to constrain range of motion Possibility of attachments such as canvas light
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Optimal Design Budget Costs
Item Unit Price Quantity S&H Total
6" Linear Actuators $100 4 $20.00 $420
DC Relays $8.75 8 $10.00 $80.00
Joysticks $15.70 2 $10.00 $41.40
Misc. Electronics $35.00 1 $10.00 $45.00
Linear Bearings $45.00 3 $10.00 $145.00
Raw Material $16.32 0 $0.00
Total $747.72
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Timeline End of December – Parts ordering January – March – Building easel April – Field testing May – Completion of project
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Conclusion Easelectric meets the needs of our client and is
less expensive than current products. Mechanically we are looking for a safe and
simple design. Materials are strong and lightweight Electronics need to be simple yet able to
properly control the device.