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Bill of Materials

Overview

The Bill of Materials below specifies components needed for the ventilator. Almost all components can be purchased from Digi-Key or McMaster-Carr. However, if a significantly cheaper vendor was found, other vendors were used. We only selected only parts which had approximately 100 items or more in stock (though most have thousands) and were widely available from several sources.

Total Number of Parts:

56

⁠

unique parts

Tools Required for Construction: Allen key set, Scissors, Soldering Iron

Hours Needed for Construction: ~4 hours

Total Cost:

$893.20

⁠

BOM

BOM

Type

Source

Component

Part Number

Quantity

Unit Price

Cumulative Price

Link

Electrical

Raspberry Pi 3 B+

8541589947

$42.99

https://www.amazon.com/ELEMENT-Element14-Raspberry-Pi-Motherboard/dp/B07P4LSDYV/ref=sr_1_4?dchild=1&keywords=raspberry+pi+3b&qid=1591244155&sr=8-4

Stepper Motor with Encoder

STP-MTR-23079E

$123.00

⁠

https://www.automationdirect.com/adc/shopping/catalog/motion_control/stepper_systems/dual_shaft_and_encoder_stepper_motors/stp-mtr-23079e

⁠

Encoder Cable

STP-CBL-EB3

$24.50

⁠

https://www.automationdirect.com/adc/shopping/catalog/cables/encoders/stp-cbl-eb3

⁠

Stepper Motor Controller

2183-3140-ND

$51.95

⁠

https://www.digikey.com/product-detail/en/pololu-corporation/3140/2183-3140-ND/11586875

⁠

Power Switch

360-1897-ND‎

$8.85

⁠

https://www.digikey.com/product-detail/en/nkk-switches/S301T/360-1897-ND/1006975

⁠

Alarm

OD2017101304UP

$8.59

⁠

https://www.amazon.com/OdiySurveil-30x15mm-Active-Electronic-Buzzer/dp/B076FVGT1C/ref=zg_bs_306824011_5?_encoding=UTF8&psc=1&refRID=1RVG81RTZBZ795MHP2NM

⁠

Limit Switches and Brackets

US-ELEC-MICRO-KIT

$4.45

$8.90

⁠

https://makerstore.cc/product/micro-limit-switch-kit-with-mounting-plate/

⁠

Pressure Transducer

480-3640-ND

$20.92

⁠

https://www.digikey.com/product-detail/en/honeywell-sensing-and-productivity-solutions/NSCDRRN001PDUNV/480-3640-ND/2683900

⁠

12V Power Supply

N/A

$11.49

⁠

https://www.amazon.com/dp/B07RDHH3L5/ref=dp_cerb_1

⁠

Raspberry Pi Touchscreen, 7"

1690-1007-ND‎

$79.00

⁠

https://www.newark.com/raspberry-pi/raspberrypi-display/display-7-touch-screen-rpi-sbc/dp/49Y1712

⁠

Raspberry Pi and Screen Enclosure

1690-1008-ND

$17.00

⁠

https://www.digikey.com/product-detail/en/okdo/ASM-1900035-21/1690-1008-ND/6152807

⁠

Pi-EzConnect Terminal Block Breakout HAT

2711

$19.95

⁠

https://www.adafruit.com/product/2711

⁠

Power Splitter

$5.68

⁠

https://www.amazon.com/gp/product/B000234UFG/ref=ox_sc_act_title_1?smid=A3VZC5G7U3OWU4&psc=1

⁠

18AWG Wire 5ft for 12V power

$5.98

⁠

https://www.amazon.com/gp/product/B01708AYYQ/ref=ox_sc_act_title_2?smid=AITZO53LNBA1K&psc=1

⁠

SanDisk 16GB MicroSD Memory Card

$6.99

⁠

https://www.amazon.com/gp/product/B073K14CVB/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

⁠

4-Channel 16-Bit ADC for Raspberry Pi (ADS1115)

ADS1115

$10.95

https://www.robotshop.com/en/seeedstudio-4-channel-16-bit-adc-raspberry-pi-ads1115.html?gclid=EAIaIQobChMI0KWz1til6QIVTr7ACh04Tgu2EAQYASABEgJhPvD_BwE

12V to USB-C Raspberry Pi Power Source (USB A to miro USB)

765756931250

$10.99

⁠

https://www.amazon.com/Raspberry-Fuente-alimentaci%C3%B3n-2-5A-Micro/dp/B0852J262G/ref=sr_1_2_sspa?dchild=1&keywords=raspberry+pi+power+supply&qid=1591069222&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExN1NXM1ZWV0U4RU9aJmVuY3J5cHRlZElkPUEwODk5NDc2MktCVzZKTVQ5RUNMSyZlbmNyeXB0ZWRBZElkPUEwMTY0NDA4MkI0VUlFSldBTUc5TiZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

⁠

USB Left Angle A Male to Female L Connector

$6.99

⁠

https://www.amazon.com/UCEC-USB-2-0-Extension-Cable/dp/B00W9BAAU8/ref=sr_1_9?dchild=1&keywords=usb+a+l+connector+male+male&qid=1591065247&sr=8-9

⁠

USB A 24W Wall Charger

$12.99

https://www.amazon.com/Anker-Charger-PowerPort-PowerIQ-Foldable/dp/B072HHW3GK/ref=sr_1_14?dchild=1&keywords=usb+a+power+brick&qid=1591065285&sr=8-14

USB Micro USB to USB A L connector

$7.99

https://www.amazon.com/RAYSUN-Packs-Degree-Micro-Male/dp/B00WMF7JUA/ref=sr_1_6?dchild=1&keywords=usb+a+l+connector+to+micro+usb&qid=1591065143&sr=8-6

$485.70

Sum

Mechanical

80/20 (1010) Extrusion 4"

1010

$2.87

$14.35

⁠

https://8020.net/1010.html

⁠

80/20 (1010) Extrusion 15.5"

1010

$5.52

$22.08

80/20 (1010) Extrusion 12"

1010

$4.71

$37.68

⁠

https://www.mcmaster.com/catalog/126/2052

⁠

80/20 (1020) Extrusion 10.5"

1020

$6.05

⁠

https://www.mcmaster.com/catalog/126/2052

⁠

Pivot for Double 80/20 Rail

47065T192

$22.25

⁠

https://www.mcmaster.com/catalog/126/2055

⁠

L Bracket

36-4337-ND

100

$0.20

$19.77

⁠

https://www.digikey.com/product-detail/en/keystone-electronics/4337/36-4337-ND/306919

⁠

Door Handle

14895A42

$2.05

$4.10

⁠

https://www.mcmaster.com/catalog/126/3108

⁠

80/20 1/4"-20 Button Head Screw 0.500" and T-Nut

3393

$0.40

$10.00

⁠

https://8020.net/3393.html

⁠

80/20 #10-32 T-Nut

3276

100

$0.16

$16.00

⁠

https://8020.net/13122.html

⁠

#10-32 Button Head Screw 0.375"

3042

100

$0.19

$19.00

⁠

https://8020.net/3042.html

⁠

80/20 #8-32 Button Head Screw 0.375" and T-Nut

3483

$0.35

$5.25

⁠

https://8020.net/3483html

⁠

3" Extension Spring, 4.8lb-in (QTY 3)

3114T94

$7.87

https://www.mcmaster.com/3114t94

#8-32 Flared Knurled Thumb Screw

94567A330

$2.24

$8.96

⁠

https://www.mcmaster.com/catalog/126/3264

⁠

T-Slot Plastic Handles (2062)

2062

$4.20

$8.40

⁠

https://www.mcmaster.com/catalog/126/2058

⁠

6' T-Slot Antislip Cover

2828

$1.15

$5.75

⁠

https://8020.net/2828.html

⁠

U-Bolt with Mounting Plate 3.5" C-C

3043T86

$4.33

$8.66

⁠

https://www.mcmaster.com/catalog/126/1694

⁠

1/2" ID Routing Clamp QTY 50

9434T17

$5.77

⁠

https://www.mcmaster.com/catalog/126/1684

⁠

NEMA 23 Steel LBracket QTY 4

Nema17-Mount

$11.99

https://www.amazon.com/Stepper-Motor-Mounting-Bracket-Screws/dp/B073V77VLD

22T XL Acetal Timing Pulley

57105K21

$8.59

⁠

https://www.mcmaster.com/catalog/126/1197

⁠

Steel Eyebolt with Shoulder - for Lifting

3014T45

$3.21

$6.42

⁠

https://www.mcmaster.com/3014t45

⁠

8" Zip Tie QTY 100

80005K11

$6.00

⁠

https://www.mcmaster.com/80005k11

⁠

Power Switch Mounting Bracket

55205K21

$7.14

https://www.mcmaster.com/55205K21

T-Slotted Framing

47065T547

$16.06

https://www.mcmaster.com/47065t547-47065T547

1.9mm 550lb Braided Spectra(R) Speargun Reel Line

B00NJQ8IDS

$11.99

⁠

https://www.amazon.com/Feet-550lb-Braided-Spectra-Speargun/dp/B005URJ644/ref=sr_1_2?ie=UTF8&qid=1459538189&sr=8-2&keywords=spectra%2Bspearfishing%2Bline&th=1

⁠

24T HTD Pulley, 1/2 in. Hex Bore

am-3403

$9.00

⁠

https://www.andymark.com/products/24t-htd-pulley-1-2-in-hex-bore?via=Z2lkOi8vYW5keW1hcmsvV29ya2FyZWE6Ok5hdmlnYXRpb246OlNlYXJjaFJlc3VsdHMvJTdCJTIyYnV0dG9uJTIyJTNBJTIyc2VhcmNoJTIyJTJDJTIycSUyMiUzQSUyMjI0K3B1bGxleSUyMiUyQyUyMnV0ZjglMjIlM0ElMjIlRTIlOUMlOTMlMjIlN0Q

⁠

PG Mounting Bracket

am-2197

$8.00

⁠

https://www.andymark.com/products/pg-series-mounting-bracket

⁠

Black-Oxide Alloy Steel Socket Head Screw

3-48 Thread Size, 1/2" Long (Pack of 100)

91251A096

$6.90

⁠

https://www.mcmaster.com/91251A096

⁠

Low-Strength Steel Hex Nut

Zinc-Plated, 3-48 Thread Size

(Pack of 100)

90480A004

$1.33

⁠

https://www.mcmaster.com/90480A004

⁠

10 & 25 Series 4 Hole - Standard Stainless Steel Hinge (Hinge for better quality of life)

12094

$18.90

⁠

https://8020.net/12094.html

⁠

Bolt Assembly: SS 1/4-20 x .500" FHSCS and Roll-In T-Nut with Flex Handle (for hinge)

⁠

https://8020.net/3639.html

⁠

$2.90

$11.60

⁠

https://8020.net/3639.html

⁠

Hex Collar Clamp

am-2871

$8.25

https://www.andymark.com/products/1-2-in-hex-bore-2-piece-collar-clamp?via=Z2lkOi8vYW5keW1hcmsvV29ya2FyZWE6Ok5hdmlnYXRpb246OlNlYXJjaFJlc3VsdHMvJTdCJTIyYnV0dG9uJTIyJTNBJTIyc2VhcmNoJTIyJTJDJTIycSUyMiUzQSUyMmNvbGxhcitjbGFtcCUyMiUyQyUyMnV0ZjglMjIlM0ElMjIlRTIlOUMlOTMlMjIlN0Q

Double Sided Tape

$7.99

⁠

https://www.amazon.com/gp/product/B07R8TYSTX/ref=ox_sc_act_title_1?smid=A3GXTQQIYFAW4P&psc=1

⁠

$362.10

Sum

Plumbing

Ambu Bag with PEEP valve

$23.96

⁠

https://www.aedsuperstore.com/ambu-bag-spur-ii-adult-resuscitator-with-adult-mask-and-oxygen-reservoir-peep-valve-bvm.html

⁠

Extension tube

$12.75

⁠

https://www.amazon.com/Sunset-18-inch-Cpap-Tubing/dp/B076P1PXHN/ref=sr_1_8?dchild=1&keywords=22mm+tubing&qid=1589766752&s=hpc&sr=1-8

⁠

Sensing Tube

$8.69

⁠

https://www.amazon.com/Lees-Airline-Tubing-6-Foot-Connectors/dp/B0002APXO6/ref=sr_1_3?dchild=1&keywords=mini+aquarium+tubing&qid=1589771359&s=pet-supplies&sr=1-3

⁠

$45.40

Sum

Testing Equipment

Model Lungs

$199.00

⁠

https://www.amazon.com/Adult-Biomedical-Ventilator-Testing-Demonstration/dp/B0767RBQ1H/ref=sr_1_1?dchild=1&keywords=lung+testing&qid=1588480940&sr=8-1

⁠

$199.00

Sum

$1,092.20

Sum

⁠

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