8.4 - Implementation
Contents:
Bill of Materials
Fabrication and Assembly
Electronics and Circuitry
Software Development
Bill of Materials
All components used may be obtained via the TIW, excluding the buttons which can be replaced with available joystick components and the cup. The quantity of rubber bands will depend on elastic strength.
Component | Quantity |
|---|---|
12x24 .25in acrylic | 1 |
M3 25mm Screws | 2 |
M3 20mm Screws | 10 |
M3 16mm Screws | 8 |
M3 Lock Nuts | 14 |
M3 Nuts | 14 |
M3 Washers | 10 |
6mm Axles 3in | 4 |
6mm Ball Bearings | 8 |
Small Cup | 1 |
Rubber Bands | 2 |
ELEGOO UNO R3 | 1 |
9V DC Batteries | 2 |
9V Battery Connectors | 2 |
Buttons | 2 |
L 298N Motor Controller | 1 |
Assorted Breadboard Wires | ~25 |
1kOhm Resistor | 1 |
2kOhm Resistor | 1 |
12V Geared DC Motor - 100 RPM | 1 |
PLA Filament |
|
Table 1: Materials list for full mechanism
Note that the 12V Geared DC Motor can be replaced with 10 RPM rather than 100 RPM. Doing so removes the necessity of the rubber bands.
Fabrication and Assembly
Linkage Mechanism Assembly
We laser cut the majority of the mechanism out of 0.25" acrylic. Note that the DXFs are not to scale. We also 3D printed one part to assist the laser cut parts in securing the motor.
Provided below are the DXFs of our linkages:
Figure 22: Linkage DXF's. Note: not all linkages are to scale. Each linkage is 0.5" wide and have been scaled down for ease of visibility.
These are the DXFs for our base:
Figure 23: Base DXF's. Note: not all figures to scale.
For the motor mount, we laser cut a vertical holder and 3D printed a base to rest the motor on.
Figure 24: Motor mount DXF and 3D printed support.
Figure 25: Linkage DXF that connects the motor to the full mechanism.
Figure 26: Cup holder DXFs.