The team's first functional prototype is shown in the following images. The materials used and their specific manufacturing methods are included in the table below.
Manufacturing and Materials
Part Name | Quantity | Method | Material | File Name / Note |
Standoff | 4 | 3D Print | PLA | Standoff.3MF |
Link - Green | 1 | Laser Cut | 1/4in Acrylic | TestLinkGreen.DXF |
Link - Cyan | 1 | Laser Cut | 1/4in Acrylic | TestLinkCyan.DXF |
Ternary Link | 2 | Laser Cut | 1/4in Acrylic | TestLinkNavy.DXF |
Link - Pink | 1 | Laser Cut | 1/4in Acrylic | TestLinkPink.DXF |
Link - Red | 1 | Laser Cut | 1/4in Acrylic | TestLinkRed.DXF |
Ground | 2 | 3D Print | PLA | Ground V2.3MF |
Ternary Ground | 1 | 3D Print | PLA | Ternary GroundV2.3MF |
Base | 1 | Laser Cut | 1/4in Wood | TestBase_Top.DXF |
M6 Spacer - 15mm | 2 | 3D Print | PLA | M6_Spacer_15mm.3MF |
M3 Spacer - 10mm | 2 | 3D Print | PLA | M3_Spacer_10mm.3MF |
M3 Spacer - 5mm | 2 | 3D Print | PLA | M3_Spacer_5mm.3MF |
Crank Handle | 1 | 3D Print | PLA | Crank Handle.3MF |
Shaft - 57.7mm | 1 | ME Machine Shop | Joint 1 | |
Shaft - 70mm | 1 | ME Machine Shop | Joint 4 | |
M3x20 | 14 | Inventory | Standoffs and Grounds | |
M3x30 Screw | 2 | Inventory | Joints 2 and 6 | |
M3x35 Screw | 2 | Inventory | Joints 3 and 5 | |
M3 Washers | 16 | Inventory | Joints | |
M3 Nuts | 36 | Inventory | Joints, Standoffs, and Ground | |
M6x45 Screw | 1 | Inventory | Joint 7 | |
M6 Nuts | 3 | Inventory | Joint 7 |
Movement
In the two videos, the full revolution of the mechanism is shown. When the crank is rotated, there is a distinct "flicking" motion as estimated by our kinematic analysis. The flicking motion occurs at the bottom of the revolution of the joint between link