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Bill of Materials

This page provides a complete list of parts needed to build the LeKiwi mobile manipulator. Our total cost is displayed in the table 1.

Price US EU
12V $482 €533
5V $499 €526
Base only (5V) $248 €295
Base only (12V) $251.5 €295
Base only wired $184 €235

Note

Prices and items may vary depending on geographic location and time of purchase. If you find links for other countries or cheaper suppliers, please create an issue or PR so that we add them to the list!

Important

There are three options regarding motors and electronics (as also the case with the SO100 arms), either 5V or 12V or a wired version. If this is the first time you build robots please choose the 5V version as it’s a little bit easier to assemble. If you are more experienced and want to lift heavier objects choose the 12V version. If you want the cheapest options, go for the wired LeKiwi robot (at the end of the Bill of Materials list).

These parts are the same for both 5V and 12V versions:

Mobile Base Structure:

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
4" Omni wheels 3 $9.99 VEX Robotics €24.5 RobotShop
M2 M3 M4 Assorted Screw Set 1 $14.99 Amazon €23.5 Amazon
Total $44.96 €97

Sensors and Compute:

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
Raspberry Pi 5 (4GB) 1 $60.00 Adafruit €57.00 Mouser
USB camera2 2 $12.98 Amazon €12.00 Amazon
microSD card 1 $11.23 Amazon €10.00 Amazon
Total $98 €91

Other

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
Table Clamp 4pcs 1 $18 Amazon € 21 Amazon
Screwdriver Set 1 $6 Amazon €10 Amazon
USB-C to USB-A Cable 2 pcs 1 $7 Amazon €7 Amazon
Total $31 €38

12V version 🔋

Mobile Base Electronics (12V):

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
12v 5a Battery 1 $32.99 Amazon €32.99 Amazon
Lever Wire Connector 1 $6.70 Amazon €7.18 Amazon
12v 5a DC plug connector 1 $9.49 Amazon €8.99 Amazon
12v to 5v 5a USB-C converter 1 $9.99 Amazon €9.99 Amazon
12v ST3215 Feetech Servo 3 $13.89 Alibaba €13.38 Alibaba
Total $108.5 €106.7

SO-100 2 Robot Arm Teleoperation Set (12V):

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
12v ST3215 Servo 12 $13.89 Alibaba €13.38 Alibaba
Motor Control Board 2 $10.55 Amazon €12.00 Amazon
Power Supply 1 $12 Amazon €15 Amazon
Total $199.78 €199.56

5V version 🔋

Mobile Base Electronics (5V):

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy EU
20000maH 85W Power Bank 1 $42 Amazon €50 Amazon
STS3215 Servo 3 $15 Alibaba 13€ Alibaba
USB-C Cable 2pcs (1feet/0.5 m) 1 $8 Amazon €7.6 Amazon
USB-C To DC Cable 1 $10 Amazon €10 Amazon
Total $105 €106.6

SO-100 2 Robot Arm Teleoperation Set (5V):

Part Amount Unit Cost (US) Buy US Unit Cost (EU) Buy EU
STS3215 Servo 12 $15 Alibaba €13 Alibaba
Motor Control Board 2 $11 Amazon €12 Amazon
Power Supply 1 $10 Amazon €13 Amazon
Total $212 €193

Wired version 🔌

Everything needed for the wired version:

Part Amount Unit Cost (US) Buy (US) Unit Cost (EU) Buy (EU)
4" Omni wheels 3 $9.99 VEX Robotics €24.5 RobotShop
M2 M3 M4 Assorted Screw Set 1 $14.99 Amazon €23.5 Amazon
USB camera2 2 $12.98 Amazon €12.00 Amazon
USB-C to USB-A Cable 2 pcs 1 $7 Amazon €7 Amazon
USB-C To DC Cable 1 $10 Amazon €10 Amazon
STS3215 Servo 3 $15 Alibaba €13 Alibaba
Motor Control Board 1 $11 Amazon €12 Amazon
Power Supply 1 $10 Amazon €13 Amazon
USB Hub 1 $16 Amazon €14 Amazon
USB-C extension cable 1 $13.99 Amazon €19 Amazon
Total $184 €235

Head to 3D Printing for the next step!



Footnotes

1: Doesn't include cost of 3D printing

2: Another supported camera option is the Arducam 5MP Wide Angle found here