The LOBBYIST
General Design
CAD |
Detailed Design
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Braking MechanismAlthough we had two propulsion fans, we decided on a braking mechanism for steering as it would provide the most controlled mechanism for pivoting. Depending on how hard someone wanted to turn, servo-actuated brakes would lower, causing the bot to pivot about that point with minimal drift. Although it was an effective mechanism, it was difficult to tune the servos as our skirt height was very low, so there was a very small range that the brakes could operate.
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1) To show whether the LOBBYIST is under active control, a stop sign raises and lower.
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2) To show how much time remains, the tail moves incrementally.
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3) To show what team is selected, the appropriate LED lights the interior.
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BOM
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Description |
Quantity |
Unit |
Price/Unit |
Vendor |
P/N |
Total Price ($) |
Chassis |
18 x 24" Duron, 1/8" |
1 |
|
3 |
PRL |
|
3 |
|
18 x 24" Foamcore, 3/16",
white |
|
|
|
PRL |
|
|
|
Duct tape |
|
|
|
DONATED |
|
0 |
|
4-40 washers |
32 |
|
0.05 |
PRL |
|
1.6 |
|
4-40 standoff spacers, 1/2", metal |
16 |
|
0.1 |
PRL |
|
1.6 |
|
4-40 screw, 1-3/4" |
16 |
|
0.05 |
PRL |
|
0.8 |
|
4-40 screw, 1/2" |
16 |
|
0.05 |
PRL |
|
0.8 |
|
|
|
|
|
|
|
|
Propulsion |
12V DC 6000RPM Mini Electric Motor |
2 |
|
3.35 |
Uxcell |
|
6.7 |
|
Lift fan |
1 |
|
|
SPDL |
|
0 |
|
High Torque Motor Propeller |
2 |
|
|
Uxcell |
|
0 |
|
TLE-5206, Motor Driver Kit |
2 |
|
|
DONATED |
|
0 |
|
|
|
|
|
|
|
|
Brake |
Servo |
2 |
|
|
Hitec |
HS-322 HD |
0 |
|
Duron |
2 |
in |
|
DONATED |
|
0 |
|
Rubber Bumper |
2 |
|
|
PRL |
|
0 |
|
|
|
|
|
|
|
|
Bumper |
Foamcore |
|
|
|
PRL |
|
0 |
|
Electrical tape |
|
|
|
DONATED |
|
0 |
|
|
|
|
|
|
|
|
DMC |
Micro Servo |
2 |
|
|
TowerPro |
SG90 |
0 |
|
Foamcore |
3 |
in |
|
PRL |
|
0 |
|
|
|
|
|
|
|
|
General Circuitry |
TIVA LaunchPad |
1 |
|
|
SPDL |
|
0 |
|
PAC |
1 |
|
|
SPDL |
|
0 |
|
PCB Perma-Protoboard, 1.5 x 2.5" |
7 |
|
|
DONATED |
|
0 |
|
PCB Protoboard, 2 x 8cm |
1 |
|
|
DONATED |
|
0 |
|
Solder |
|
|
|
DONATED |
|
0 |
|
Voltage regulator |
2 |
|
|
DONATED |
|
0 |
|
7.2V NiCd battery |
2 |
|
|
DONATED |
|
0 |
|
Assorted resistors |
35 |
|
0.1 |
PRL |
|
3.5 |
|
Wiring, 24AWG |
12 |
ft |
0.1 |
PRL |
|
1.2 |
|
Heat shrink |
|
|
|
PRL |
|
0 |
|
2-pin male Molex connector |
15 |
|
0.2 |
PRL |
|
3 |
|
2-pin female Molex connector |
15 |
|
0.2 |
PRL |
|
3 |
|
Molex crimps, 0.1" spacing |
30 |
|
0.05 |
PRL |
|
1.5 |
|
0.1uF monolithic capacitor |
14 |
|
0.03 |
PRL |
|
0.42 |
|
10uf tantalum capacitor |
12 |
|
0.1 |
PRL |
|
1.2 |
|
100uf electrolytic capacitor |
12 |
|
0.15 |
PRL |
|
1.8 |
|
Barrel adaptor for TIVA |
1 |
|
1.5 |
PRL |
|
1.5 |
|
Mechanical switch, power |
3 |
|
1.5 |
PRL |
|
4.5 |
|
LED, small |
9 |
|
0.03 |
PRL |
|
0.27 |
|
LED, large |
2 |
|
0.05 |
PRL |
|
0.1 |
|
12VDC 60 LED RGB Strip |
1 |
m |
9.99 |
Jameco |
2215224 |
9.99 |
|
|
|
|
|
|
|
|
Total Price |
|
|
|
|
|
|
46.48 |