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10. Cost Analysis

Below, you will find actual prototype cost and present day cost of electronic design and industrial design. At the bottom, you will find the complete list of design cost for the prototype.

None of these prices include labor or facility costs, both of which were not "real" costs during the construction of the prototype.

10.1 Electronic design

Prices are noted as material, excluding shipping. Actual costs includes material damaged and replaced during assembly. Estimated price ranges are designed for low quantity purchases. With proper research and planning, cost for materials can drop significantly. Prices are referenced to above categories.

Category Actual prototype costs (2002-2003) Projected present day costs (2006)
LEDs (504): red, green, blue, yellow, white $1022.22   $200 - $500 The less expensive items are available from manufacturers, mostly overseas. Risk is somewhat higher, given false advertisement. The more expensive items are from catalogs, such as Digikey, and Mouser, but have more believable value
Touchpad $7.50   $4 - $10  
Wire, PCBoards, Heat Shrink Tubing $78.22 Some purchased from local stores (expensive) $20 - $50  
Power Supply, ICs, sockets, transistors, resistors, oscillators, connectors, LEDs for control module, buttons $543.13 Major factors: Custom power supply, space miser resistors, connectors (ethernet, power, etc.) and sockets. $150 - $300  
Rabbit RCM2200 (development kit) $255.50 Includes developer kit, prototyping board, and module $149, $89 RCM 4000 complete kit, RCM 4000 module alone
Total Cost $1879.30   $463 - $1009  

10.2 Industrial Design

Cost includes material damaged and replaced during assembly. The projected present day cost of raw materials will either be similar, or be higher due to rising cost of resources.

Category Actual prototype costs (2002-2003)
Raw aluminium material (rods, plates, etc.) $840.64
Rotary hinges, dampers, flexible tubing $182.90
Screws, taps, drills $540.87
Total Cost $1564.41

10.3 Actual Prototype Cost

# Date Item Description Company Price (US $) Credit (US $) Shipping (US $) Notes Receipt
1 10/2/2001 LED clusters (8) eBay 39.92   11.90 unused  
2 2/1/2002 Aluminum Plate (8" x 8" x 1") trade 30.00   0.00    
3 3/1/2002 Aluminum Plate (24" x 24" x 1") trade 400.00   0.00    
4 3/1/2002 Aluminum Rod (3.5 dia x 3") trade 20.00   0.00    
5 4/1/2002 red, green, blue, yellow, white LEDs (1-2 each) Radio Shack 12.42   0.00 unused  
6 4/9/2002 Rotary Hinge (2) McMaster Carr 166.50   5.00    
7 4/9/2002 Stainless Steel Socket Head Cap Screws McMaster Carr 15.00   5.00    
8 4/24/2002 Metric Tap, Rotary Hinge (2), Aluminum Rod (2), Socket Cap Screws McMaster Carr 261.70   5.00    
9 5/28/2002 Stainless Steel Socket Head Cap Screws McMaster Carr 30.93   5.00    
10 6/1/2002 Aluminum Plate (18" x 18" x 1") trade 230.00   0.00    
11 6/25/2002 Air Cylinder, Pivot Bracket (2), Rod Clevis with Pin McMaster Carr 50.97   5.00    
12 6/25/2002 Return: Line 11 McMaster Carr   -50.97 5.00    
13 6/27/2002 Aluminum Plate (15" x 12" x 1") Hadco 70.00   3.00    
14 7/1/2002 Hydraulic Compression Dampers (2), Clevis End Fittings (2), Eyelet End Fittings (4) McMaster Carr 157.87   5.00   1, 2, 3
15 7/8/2002 Stainless Steel Socket Head Cap Screws McMaster Carr 11.50   5.00   1
16 7/20/2002 red, green, blue, yellow, white LEDs (1 each) Hosfelt 10.51   5.47 unused  
17 10/1/2002 Stainless Steel Ladle McMaster Carr 27.95   2.29 unused  
18 10/10/2002 Bowls Hardware Store 6.50   0.00 unused  
19 10/16/2002 Aluminum ladle Hunting Fishing Inc. 14.99   5.88    
20 10/25/2002 Aluminum ladle Hunting Fishing Inc. 14.99   5.90    
21 11/21/2002 red, green, blue, yellow, white LEDs (525) Hosfelt 1,022.22   10.00   1
Note: Given the tremendous number of comments with regards to the high price tag of this item, please bear in mind that the bright LEDs were purchased in the year 2002. Prices will obviously adjust over time and are significantly lower nowadays.
22 11/28/2002 Touchpad eBay 7.50   6.00    
23 12/3/2002 Flexible Tube Sample AKG Acoustics US 10.00   4.30 unused  
24 12/13/2002 Wide Ribbon Cable Digikey 36.31   7.66    
25 12/16/2002 Flexible Tube Vermont Flexible Tubing 0.00   0.00 sample 1
26 1/11/2003 Heat Shrink Tubing (11) Radio Shack 27.27   0.00    
27 1/17/2003 Mini PCBoard (8) Radio Shack 14.64   1.50    
28 1/22/2003 Plastic lamps, battery operated Hardware Store 4.31   0.00 unused  
29 1/23/2003 Silicon Foam Rubber McMaster Carr 24.78   3.25 unused 1
30 1/29/2003 ICs, Transistors, Power Supply, red, green, blue, yellow, white LEDs (35) Digikey 311.44   6.42   1
31 1/29/2003 1/8-27 pipe tap McMaster Carr 16.70   3.43   1
32 1/31/2003 Rabbit RCM 2200 Kit and accessories Rabbit Semiconductor 255.50   5.00   1
33 2/4/2003 Aluminum Rod, Parabolic Flute Drill McMaster Carr 60.66   7.60   1
34 2/5/2003 Yellow LEDs (8) Digikey 6.88   4.08   1
35 2/7/2003 Flexible Tubes Vermont Flexible Tubing 50.00   5.00    
36 2/7/2003 Space Miser Resistors Digikey 70.68   4.08   1
37 2/28/2003 Clock Oscillators Digikey 12.89   4.08   1
38 3/9/2003 Bowls Kmart 2.89   0.00 unused  
39 3/17/2003 Power Cables Radio Shack 5.19   0.00    
40 3/18/2003 Plastic sleeve Art Store 1.76   0.00 unused  
41 3/18/2003 Connectors Digikey 41.61   4.08   1
42 3/24/2003 Touchpad Switches McMaster Carr 25.40   3.43   1
43 3/25/2003 Connectors Digikey 5.49   4.08   1
44 3/25/2003 Switches Digikey 13.58   8.88 unused  
45 3/26/2003 Touchpad Switches McMaster Carr 28.83   8.05 unused  
46 3/28/2003 Return: Line 44 Digikey   -13.58 5.00    
47 3/29/2003 Return: Line 45 McMaster Carr   -28.83 5.00    
48 3/31/2003 PIC17C44-33/P Microchip Technology 0.00   0.00 sample 1, 2
49 4/1/2003 Switches Mouser 11.46   5.24   1
50 4/17/2003 Touchpad eBay 5.00   8.00 unused 1
51 5/15/2003 Connectors Digikey 34.63   4.08   1
52 5/30/2003 Return: Line 23 AKG Acoustics US   -9.70 3.95    
53 6/2/2003 Switches Mouser 3.82   5.17   1
54 6/2/2003 Switches Mouser 7.64   5.25   1
55 7/18/2003 Stainless Steel Socket Head Cap Screws McMaster Carr 13.57   3.61   1
56 7/31/2003 IC sockets Digikey 31.40   4.08   1
 
Sub-Total 3,735.80 -103.08 224.74  
TOTAL 3,857.46