Prototype Bill of Materials

 

Subteam Component Description Unit Cost Quantity Total Cost
Electrical and Mechanical Integration Mini Speaker [1] for user interface, PC Mount 12mm 2.048kHz $1.95 1 $1.95
Arduino Mega 2560 R3 [2] control system inputs and outputs $38.95 1 $38.95
Toggle Switch [3] for user interface, 125 VAC $2.95 1 $2.95
GTE Knob [4] for user interface, small $0.95 1 $0.95
Ribbon Cable [5] connectors, 10 wire (15ft) $4.95 1 $4.95
Rotary Potentiometer [6] for user interface, Linear (10k ohm) $0.95 1 $0.95
Touchscreen Breakout Board [7] for user interface, 3.5″ TFT 320×480 + with MicroSD Socket – HXD8357D $39.95 1 $39.95
SPST Latching Pushbutton Switch [8] for user interface $7.81 1 $7.81
Compression Spring Stock [9] for user interface attachment, 36″ Long, 0.75″ OD, 0.59″ ID $4.69 1 $4.69
Compression Spring (pack of 12) [10] for user interface attachment, 0.75″ Long, 0.24″ OD, 0.196″ ID $10.84 1 $10.84
Screw Terminal [11] for control system $0.95 1 $0.95
10K Ohm Resistor (pack of 20) [12] for control system $1.20 1 $1.20
Circuit Board [13] for control system $1.28 1 $1.28
General Purpose Aluminum Tubing [14] for user interface attachment, 7/8″ OD, 0.035″ Wall Thickness, 3 ft long $12.25 1 $12.25
General Purpose Aluminum Tubing [15] for user interface attachment, 1″ OD, 0.058″ Wall Thickness, 3 ft long $22.32 1 $22.32
Thumb Joystick [16] for user interface $3.95 1 $3.95
Propulsion ODrive Dual Shaft Motor [17] high torque motor to propel device, D6374 150KV $99.00 2 $198.00
Magliner 130502 Rotacaster Double Row Multi-Directional Wheels [18] turned by motor to propel device $24.99 2 $49.98
Motor Encoders [19] provides motor counts, 8192 CPR Encoder with Cable $39.00 2 $78.00
ODrive Motor Driver [20] connects control system and motor, V3.6 56V with connectors $159.00 1 $159.00
Timing Pulley: 20 teeth [21] for transmission $13.31 2 $26.62
Timing Pulley: 14 teeth [22] for transmission $10.30 2 $20.60
L Series Timing Belt [23] for transmission $8.11 2 $16.22
Ball bearing [24] for transmission, Open, Trade Number R8, for 1/2″ Shaft Diameter $6.27 4 $25.08
Rotary Shaft [25] for transmission, 1566 Carbon Steel, 1/2″ Diameter, 24″ Long $17.81 1 $17.81
P3316 Aluminum 3003 H-14 Plate [26] transmission housing base plate, 2ft x 1 ft, 3/16″ thick $41.56 1 $41.56
Multipurpose 6061 Aluminum T-bar [27] transmission housing support, 2 ft $13.91 1 $13.91
Sheet metal [28] transmission housing, 0.032″ thick, 2ft by 4 ft, S3032 $73.40 1 $73.40
Rivets (pack of 10) [29] for transmission housing, Aluminum, 1/8″ Diameter, for 0.063″-0.125″ Thickness $9.75 1 $9.75
Flat head screws (packs of 10) [30] for transmission housing, 4-40 Thread Size, 1/2″ long $9.43 3 $28.29
High-Strength Steel Threaded Rod [31] for hitch attachment, 8-32 Thread Size 4″ Long $1.67 2 $3.34
Zinc-Plated Steel Wing Nut (pack of 100) [32] for hitch attachment, 8-32 Thread Size $9.23 1 $9.23
Alloy Steel Cup-Point Set Screw Black-Oxide (pack of 100) [33] for torque transmitter, 10-32 Thread 3/8″ Long $13.06 1 $13.06
Plastic-Head Thumb Screws (pack of 10) [34] for hitch attachment, two-arm, 10-32 Thread, 3/8″ Long $7.25 3 $21.75
Stainless Steel Button Head Hex Drive Screw (pack of 100) [35] for hitch attachment, 18-8, 8-32 Thread Size, 1-1/4″ Long $8.56 1 $8.56
Low-Strength Steel Hex Nut (pack of 100) [36] for hitch attachment, Zinc-Plated, 8-32 Thread Size $1.65 1 $1.65
F4182 6061-T6511 Aluminum Flat [37] for hitch attachment, 1/8 X 2″ $4.96 1 $4.96
F41412 6061-T6511 Aluminum Flat [37] for hitch attachment, 1/4 X 1/2″ $4.12 1 $4.12
R3158 6061-T6511 Aluminum Round Bar [38] for hitch attachment, 1-5/8 inch Dia., 1 ft long $20.30 1 $20.30
Ultra-Machinable 360 Brass Disc for torque transmitter, 1-1/2″ Diameter 1/2 ft $36.17 1 $36.17
F41112 6061-T6511 Aluminum Flat Bar [37] for attachment to wheelchair, 1 X 1-1/2, 1 ft. long $12.99 1 $12.99
Multipurpose 6061 Aluminum Rod [39] for attachment to wheelchair 1″ Diameter, 1 ft Long $6.60 1 $6.60
Stainless Steel Wing-Head Thumb Screw [40] for attachment to wheelchair, 1/4″-20 Thread Size, 2″ Long $10.08 4 $40.32
Gasket Material [41] for attachment to wheelchair, Water- and Steam-Resistant EPDM, 12″ x 12″, 1/16″ Thick $4.92 1 $4.92
Lithium Ion Battery [42] for powering the system, 48 V, 10 AH $189.00 1 $189.00
Bike Caliper Brakes [43] for breaking $18.99 1 $18.99
Sensor SparkFun 9DoF IMU Breakout [44] for user input detection $16.95 1 $16.95
Total $1,327.07