Below is a list of the materials and tools that were used to make the U-Build Bionic Knee. You are welcome to deviate from the links in the bill of materials for items you can find cheaper elsewhere, like screws. However, we recommend keeping the same head type as the type we linked to ensure it will not affect the design.

**NOTE: It is important to note that you cannot substitute other drills for the Makita XFD11. They will NOT fit in the current motor housing.**

Materials

ItemQuantityPriceLinkWhere it's usedExtra InformationWebsite Name

Linear Potentiometer220.13SiteGround Contact SensorMouser

Dowel Pin17.81SiteGround Contact SensorComes in packs of 5 (1 needed)Mcmaster-Carr

Wave Spring14.11SiteGround Contact SensorMcmaster-Carr

Makita XFD111~179.26EbayMotor SystemDiscontinued drill, look on EbayMakita

3/8in Hex Hub28.75SiteTransmissionam-4123AndyMark

3/8in Steel Hex Shaft1 foot4.00SiteTransmissionam-2356-1AndyMark

3/8 in. Hex Shaft Collar16.60SiteTransmissionAndyMark

14 Tooth Gear113.00SiteTransmissionam-3484AndyMark

20 Tooth Gear16.00SiteTransmissionam-0186AndyMark

30 Tooth Gear115.00SiteTransmissionam-3536AndyMark

40 Tooth Gear118.25SiteTransmissionam-3976AndyMark

Hex Bearings47.70SiteTransmissionam-4489AndyMark

Hex Spacers 0.063in20.65SiteTransmissionam-3947-063AndyMark

Hex Spacer 0.25in2.065SiteTransmissionam-3947-250AndyMark

Machine Key10.85SiteTransmissionam-1043AndyMark

Shim Stock16.30SiteTransmissionZoro

Male Micro-Fit connectors 4-pos411.84SiteElectronicsMouser

Feather M0 Express119.95SiteElectronicsAdafruit

Hall Effect Rotary Encoder110.48SiteElectronicsRecommend ordering 2, but this is not necessary.Digikey

E-Stop Button139.88SiteMotor ystemDigikey

N-Channel MOSFET11.51SiteElectronicsRecommend ordering 2, but this is not necessary.Digikey

LiPo Battery19.95SiteElectronicsRecommend ordering 2, but this is not necessary.Adafruit

Custom PCB11.75SiteElectronicsRecommend ordering 3, but this is not necessary.OSH Park

Capacitor10.21SiteElectronicsRecommend ordering 3, but this is not necessary.Mouser

Diametrically polarized magnet10.82SiteElectronicsDigikey

2 CIRCUIT PICOBLADE12.88SiteElectronicsCut wires on picoblade and solder wires from the plug end to board.Mouser

3 CIRCUIT PICOBLADE22.64SiteElectronicsCut wires on picoblade and solder wires from the plug end to board.Digikey

4 CIRUIT PICOBLADE14.02SiteElectronicsCut wires on picoblade and solder wires from the plug end to board.Mouser

6 CIRCUIT PICOBLADE15.17SiteElectronicsCut wires on picoblade and solder wires from the plug end to board.Mouser

M2 5mm Screw214.26SiteGround Contact SensorComes in packs of 100 (1 needed).Mcmaster-Carr

M2 25mm Screw16.21SiteMotor SystemComes in packs of 10 (1 needed).Mcmaster-Carr

M2.5 5mm Screw128.41SiteFrameComes in packs of 100 (1 needed).Mcmaster-Carr

M2.5 10mm Screw48.55SiteElectronics/FrameComes in packs of 50 (1 needed).Mcmaster-Carr

M3 14mm Screw48.27SiteGround Contact SensorComes in packs of 100 (1 needed).Mcmaster-Carr

M3 25mm Screw43.95SiteMotor SystemComes in packs of 25 (1 needed).Mcmaster-Carr

M3 60mm Screw110.35SiteMotor SystemComes in packs of 25 (1 needed).Mcmaster-Carr

M3 80mm Screw39.99SiteMotor SystemComes in packs of 20 with nuts (you might not need to buy more m3 nuts).Amazon

M4 25mm Screw210.01SiteMotor SystemComes in packs of 50 (1 needed).Mcmaster-Carr

M4 40mm Screw28.44SiteMotor System, TransmissionComes in packs of 25 (1 needed).Mcmaster-Carr

M4 55mm Screw37.20SiteTransmissionComes in packs of 25 (1 needed).Mcmaster-Carr

M5 60mm Screw611.23SiteTransmissionComes in packs of 10 (1 needed).Mcmaster-Carr

M6 14mm Flat Head Screw47.41SiteProsthetic Foot, BypassComes in pack of 25 (1 needed).Mcmaster-Carr

M6 16mm Left Hand Thread Screw112.65SiteTransmissionComes in packs of 5 (1 needed).McMaster-Carr

M6 16mm Flat Head Screw46.52SiteGround Contact SensorComes in packs of 50 (1 needed).Mcmaster-Carr

M6 20mm Flat Head Screw97.38SiteProsthetic Foot, BypassComes in packs of 25 (1 needed).Mcmaster-Carr

M6 30mm Flat Head Screw48.86SiteGround Contact SensorComes in packs of 50 (1 needed).Mcmaster-Carr

M6 55 flat head screw49.17SiteTransmissionComes in packs of 5 (1 needed).Mcmaster-Carr

M6 60mm Flat Head Screw49.17SiteTransmissionComes in packs of 5 (1 needed).Mcmaster-Carr

M10 25mm Flat Head Screw18.88SiteProsthetic Foot, BypassComes in packs of 10 (1 needed)

M2 Nuts18.52SiteMotor SystemComes in packs of 50 (1 needed).Mcmaster-Carr

M3 Nuts115.71SiteMotor SystemComes in packs of 100 (1 needed).Mcmaster-Carr

M4 Nuts73.81SiteMotor System, TransmissionComes in packs of 100 (1 needed).Mcmaster-Carr

M6 Nuts85.21SiteGround Contact SensorComes in packs of 100 (1 needed).Mcmaster-Carr

Washer15.15SiteTransmissionComes in packs of 100 (1 needed).Mcmaster-Carr

M2 Heat Set Inserts218.53SiteGround Contact SensorComes in packs of 100 (1 needed).Mcmaster-Carr

M2.5 Heat Set Inserts1213.50SiteElectronicsComes in packs of 10 (price based on 2 packs needed).Mcmaster-Carr

M3 Heat Set Inserts421.02SiteGround Contact SensorComes in packs of 100 (1 needed).Mcmaster-Carr

Aluminum Sheet Stock125.18SiteProsthetic Foot, BypassMcmaster-Carr

Aluminum Cylinder Stock14.39SiteProsthetic Foot, BypassOrder 1/2 foot.McMaster-Carr

Pyramid Adapter2~30
eBayGround Contact Sensor, TransmissionFind this item on Ebay.eBay

4 Hole Female Socket Adapter2~32.65eBayProsthetic Foot, BypassReference th Setting up the I-Walk, Benchtop, and Foot for more purchasing info.eBay

Pyramid Receiver to Pylon2~29ebayProsthetic Foot, BypassReference th Setting up the I-Walk, Benchtop, and Foot for more purchasing info.eBay

Tube Clamp to Male Adapter1~50ebayProsthetic Foot, BypassReference th Setting up the I-Walk, Benchtop, and Foot for more purchasing info.eBay

Tube Clamp Adapter(female)132.27ebayProsthetic Foot, BypassReference th Setting up the I-Walk, Benchtop, and Foot for more purchasing info.eBay

Prosthetic Foot1~45ebayProsthetic Foot, BypassReference th Setting up the I-Walk, Benchtop, and Foot for more purchasing info.eBay

Solder16.50SiteElectronicsMake sure you don't already have access to this.Sparkfun

Heat Shrink16.99SiteElectronicsAmazon

3D Printing Filament2 rolls minimum~26.99SiteFrameBuy according to your specific printer.

20 Gauge wire110.98SiteMotor SystemAmazon

I-walk bypass1159.00SiteThis is how you can walk on the leg if you don't have an amputation. You can find this cheaper on Ebay. The 2.0 and 3.0 will both work.Amazon

**Note: It is important to note that you cannot substitute other drills for the Makita XFD11. They will NOT fit in the current motor housing.**

Tools

ItemLinkUses(Note that you do not need these specific tools)
3D printerSite
Soldering IronSite
SolderSite
Metric Hex Wrench SetSite
ClampsSiteHelpful for benchtop testing
MalletSite
TweezersSite
PliersSite
Hot Glue GunSiteSecuring wires on feather
Heat GunSiteFor heat shrink on spliced wires
Wire strippersSite
HacksawSite
Bandsaw
Drill press
10mm tapSite
6mm tapSite
Tap handleSite