TSLx257 - Texas Advanced Optoelectronic Solutions - Light-To-Voltage Sensors (Red and Green) - Used for detecting path boundaries
GP2D15 - Sharp - Digital IR Sensors - Used for "vision"
SN74LS257BN - Texas Instruments - Quad 2:1 Tri-State Multiplexer - Used for sensor array access
DM74LS02N - Fairchild Semiconductor - Quad: 2-Input NOR Gates - Used for LED output
TEA and TEAvm Reference - Programming Language Reference and other Reference Materials
Squeak - Program used for prototyping the logic
| We would have liked to use Squeak more extensively, but time became a liability. We were able to prototype the path following portion of our project. In order to implement the obstacle avoidance code, we would have had to learn SmallTalk, the scripting language behind the program. We also fell behind schedule and were unable to prototype anything other than this basic course. The squeak file for this, including a JPG, and Code are shown on this page. |
Cost Breakdown |
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|
Description |
Vendor |
Unit Cost |
Units |
Our Cost |
Total Cost |
|
Acroname Brainstem GP 1.0 |
79.00 |
1 |
79.00 |
79.00 |
|
|
TAOS TSLX257 LTV Sensors |
6.74 |
4 |
Free Samples |
26.96 |
|
|
Sharp GP2D15 IR Sensors w/ Cable |
11.50 |
8 |
92.00 |
92.00 |
|
| Sheet of Material (Lexan) | Niagara Hobby & Craft Mart |
17.59 |
1 |
17.59 |
17.59 |
|
Battery Pack w/ Connector |
3.50 |
2 |
7.00 |
7.00 |
|
|
Colored Duct Tape |
Jo-Ann Ect. |
4.29 |
4 |
17.16 |
17.16 |
|
4Pk AAA Battery Case |
1.89 |
1 |
1.89 |
1.89 |
|
|
ICB86 PC Boards |
1.79 |
3 |
5.37 |
5.37 |
|
|
LM341T-0.5 Voltage Regulator (+5V) |
0.82 |
1 |
0.82 |
0.82 |
|
|
4Pk AAA Batteries (Energizer E2 Lithium) |
11.99 |
1 |
11.99 |
11.99 |
|
|
4Pk AA Batteries (Energizer E2 Lithium) |
12.99 |
2 |
25.98 |
25.98 |
|
|
Serial Interface Connector |
10.00 |
1 |
10.00 |
10.00 |
|
|
Black Wheels with Black Bands |
2.50 |
4 |
10.00 |
10.00 |
|
|
Standard Servo w/cont, BB |
21.00 |
4 |
84.00 |
84.00 |
|
|
IC Socket (16pin) |
Radio Shack |
1.29 |
1 |
1.29 |
1.29 |
|
Wiring (22 Guage) |
Radio Shack |
4.29 |
1 |
4.29 |
4.29 |
|
35 Crimps and Housings |
11.00 |
2 |
22.00 |
22.00 |
|
|
Servo Motor Mount Brackets |
5.75 |
2 |
11.50 |
11.50 |
|
|
Heat Sink |
1.69 |
1 |
1.69 |
1.69 |
|
| Heat Sink Mounting Hardware | 1.69 | 1 | 1.69 | 1.69 | |
|
Servo Encoder |
32.95 |
1 |
32.95 |
32.95 |
|
| PermaMount Tape | Radio Shack | 1.99 | 2 | 3.98 | 3.98 |
| Two-Way Toggle Switch | Radio Shack | 2.99 | 1 | 2.99 | 2.99 |
| SN74LS257BN Multiplexer | DigiKey | 0.72 | 1 | On Hand | 0.72 |
| Lego Blocks | Various Kits | N/A | N/A | N/A | N/A |
| DM74LS02N NOR Gates | DigiKey | 0.53 | 2 | On Hand | 1.06 |
| Red LEDs | DigiKey | 0.07 | 5 | On Hand | 0.35 |
| 100 Flat Lego 2x2 Squares | Lego@Home | 6.99 | 1 | 6.99 | 6.99 |
| Grand Total (less tax, s/h) | $452.27 | $481.46 | |||