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 |