Bill of Materials

Bill of Materials

Bill of Materials

Item

Rec Qty

Materials

Vendor

Price (per item)

Descr.

Notes

1

3

Creality Ender 3 Pro (3D printer)

Creality

$150

Will be used to create mold and rig.

A large number of 3D printers is recommended due to the potentially high volume of prints.

2

2

PLA filament 1.75kg

Overture

$18

Used in 3D printers.

Any PLA filament will work fine.

3

2

BNTECHGO 28 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0122" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors

BNTECHGO

$11.45 (0.02 cents per foot)

Used in electromagnet.

Thinner wire is recommended since less voltage will be required to generate a higher current.

4

2

M6-1.0 x 35mm Socket Head Cap Screws, 12.9 Grade Alloy Steel, Allen Socket Drive, Black Oxide Finish, Machine Thread, 40 PCS

Kongki

$13

Used in making electromagnet.

As long as the bolts are made of some sort of steel or iron they should be okay.

5

2

Smooth-On Ecoflex 00-20 Super Soft Silicone Rubber - Pint Unit

Smooth-On

$38

Used in creating the tube-man.

 

6

2

Smooth-On Dragon Skin 20 Mold Making Silicone Rubber - Trial Unit

Smooth-On

$38

Used in creating the tube-man.

 

7

1

ELEGOO UNO Project Super Starter Kit 

ELEGOO

$30

Programmable Microcontroller along with other useful electronics.

This was selected due to having multiple necessary components (cables, breadboard, microcontroller) in one package. Jump wires and an UNO board are used in Figure 6.

8

1

L298N Motor Driver

Qunqi

$7

Controls the strength and direction of current supplied. 

This is recommended since it can handle higher voltages than those that come (L293D) with project kits. This is used in Figure 6.

9

1

Plastic Cups

Comfy Package

$8.49

An 80-pack of plastic cups.

This was selected to help hold the silicone needed for the tube.

10

1

Digital Scale

Amazon Basics

$10.70

A digital scale with an LCD display. Can weigh up to 11 pounds.

This was selected to help measure the amount of silicone needed for the tube.

11

1

12V DC Power Supply

ABLEGRID 

$10.99

A 12V DC Power supply adapter.

This was used to supply power to the Arduino and electromagnets. It can be used instead of 4 AAA batteries in Figure 6.

12

2

CENTROPOWER 20 Pcs DC Male Plug Connector 12V 5A 2.1mm X 5.5mm DC Power Adapter Connector

CENTROPOWER

$8.59

Allows the 12V power supply to be connected to the motor driver with wire from the starter kit.

 

13

1

Hillman #10-32 x 1/2-in Phillips-Drive Machine Screws (10-Count)

Lowe’s

$1.38

Important fasteners for assembling reverse mold seen in the technical drawings and paper.

 

14

1

RHINOCATS 60 pcs Refrigerator Magnets, Magnets for Nail Clippers, Small Round Fridge Magnets, Tiny Magnet, Multi-Use for Office, Hobbies, Crafts and Science, Tiny Size: 5mm x 3mm(DxH)

rhinocats

$4.99

Is placed in the silicone tube to allow for electromagnetic attraction.

 

15

4

Powermax 24-Count AAA Batteries, Ultra Long Lasting Alkaline Battery, 10-Year Shelf Life, Reclosable Packaging

Powermax

$6.15

AAA batteries that can be used as a power source.

If the instructor decides to use batteries instead of the power source, this is what should be purchased.

16

1

BHM-4A3

Twin Industries

$3.52

The battery holder for the AAA batteries.

 

This section is reproduced from our paper available online via ASEE

Heil-heintz, W. Y., & Wojcicki, J., & Trkov, M., & Xue, W., & Bakrania, S., & Jamison, C. S. E. (2024, June), BYOE: Wacky-Waving-Non-Inflatable-Arm-Flailing-Tube-Man for Teaching Soft Robotics Paper presented at 2024 ASEE Annual Conference & Exposition, Portland, Oregon. 10.18260/1-2--48438