16.9 Index A: Bill of Materials
This page outlines the parts we used in our assembly and where we sourced them from. Much of our prototype and final assembly was fabricated with laser cut 1/4” acrylic or 1/4” plywood, which we purchased from Texas InventionWorks through the class budget. We also sourced our PLA from Texas InventionWorks, which was free for our prints.
All other hardware and software is shown in the Bill of Materials below
Part Name | Function | Key Dimensions | Source | Qty | Price |
|---|---|---|---|---|---|
Acrylic | Allows precise fabrication of linkages | 1/4” thickness | TIW | 2 | $20.76 |
Plywood | Allows precise fabrication of panels | 1/4” thickness | TIW | 1 | $6.91 |
PLA | Enables 3D printing for fabrication of complex parts | N/A | TIW | N/A | $0.00 |
Hardware Set | Connects the link joints, button head used for lower profiles | M4 x 6-30 | Amazon | 1 set | $8.99 |
Lock nuts | Allows for minimal axial rotation in the joints | M4 | Amazon | 1 bag | $9.99 |
Shafts | Used to connect and run the belt-pulley system | 6mm OD | Amazon | 1 set | $6.69 |
Bearings | Allows the shafts and belt-pulley system to sin freely | 6mm ID | Amazon | 1 set | $8.29 |
Shaft Couplers | Used to interface the 6mm shaft with the DC motor shaft for the belt-pulley system | 6mm ID | Amazon | 1 set | $14.99 |
Flanged Shaft Couplers | Used to interface the DC motor shaft to the crank link for the 8-bar linkage | 6mm ID | Amazon | 1 set | $6.99 |
Timing Pulleys | Allows for transmission of rotation across long distances | 6mm ID, 6mm width | Amazon | 1 set | $19.89 |
Timing Belt | Allows for transmission of rotation across long distances and used to carry paper | 800 mm length, 6mm width | Amazon | 1 set | $9.49 |
DC Motor | Actuates the input crank and the belt-pulley system | 12 V, 100 ROM | Personal | 2 | $0.00 |
Servo Motor | Facilitates the change in motion of the mechanism between configurations | 12 V | Personal | 1 | $0.00 |
Arduino Uno | Acts as the controls for the power and motors of the assembly | Arduino compatible | Personal | 1 | $0.00 |
Power Supply | Powers the Arduino and motors | 12 V | Robot Mechanism Design | 1 | $0.00 |
Expo Markers | Used to inscribe Morse Code | Expo brand | CVS | 1 set | $9.99 |
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| Total | $122.98 |