Auto-assembled, not yet reviewed

Bambot

Sub-$300 wheeled, arm-equipped humanoid-style bot built from SO-100 + LeKiwi parts.

Reproducibility65/100Partial source coverage, unverifiedCADBOMWIREFWBUILDLICREPHow it is computed
Bambot open-source 15-DoF mobile manipulator, 3D render from bambot_v0.urdf
main assembly 3D · bambot_v0.urdf

About Bambot

Bambot is an open-source, low-cost AI robot that combines a holonomic three-omni-wheel mobile base (LeKiwi-style) with two SO-100 style arms, all driven by Feetech STS3215 serial bus servos. The project pairs printable hardware with a browser-based playground at bambot.org for keyboard, leader-arm and chat control, and a companion lerobot-bambot stack for recording and replaying demonstrations. The upstream bill of materials comes to about $300; two cable rows have Taobao prices only, with no US or EU price.

Licenses

Hardware
Apache-2.0
Software
Not published
Docs
Not published

Degrees of freedom

15 DoF arms 12wheels 3

Breakdown source

Mobile manipulatorBimanualHolonomic baseOmni wheelssource

How to build Bambot

5 steps

Steps marked Motari summary condense the linked source; follow the source for exact instructions. Upstream step marks a step taken from the linked guide.

  1. Print the parts

    Download the STL set or the 3MF files from the GitHub releases, or explore the TinkerCAD model, and print the base, arm and body parts.

    Motari summarybambot.org

  2. Source electronics

    Gather 15 STS3215 servos (12V version), one motor control board, three 4 inch omni wheels, an M2/M3/M4 screw set, two long 5264 wires and a USB-C to DC cable (about $300 upstream). A 20000 mAh USB PD power bank is listed separately under other tools needed.

    Upstream stepgithub.com/timqian/bambot/blob/eba23eb2f4db4e0761911f983cd1a...

  3. Assemble base and arms

    Build the three omni wheel base and the two SO-100 style arms; upstream describes Bambot as a two-armed LeKiwi.

    Motari summarybambot.org

  4. ID and wire the servos

    Assign unique IDs to each bus servo with the Waveshare board, then daisy-chain power and data with the 5264 cables.

    Motari summarybambot.org

  5. Run the software

    Use the in-browser playground at bambot.org for keyboard/leader/chat control, or the lerobot-bambot repo to record and replay demonstrations.

    Motari summarybambot.org
Print timenot published
Assembly timenot published

Wiring, power and firmware are safety-relevant and shown for reference only. Check them against the source before building.

Bambot bill of materials

7 rows

Cost to build

$300USDestimate
  • approximate upstream BOM total; power bank listed separately$300estimate

In the source currency, as read on 2026-09-30. Not converted, and not checked against current vendor prices: none of these is a Motari-verified checkout total.

Bambot parts, as the source lists them (read 2026-09-30). Prices are the source's, not checked against vendors.

Bambot bill of materials
PartQtySpecSourceConfidence
STS3215 Servo (12V version)Listed in the Bambot hardware README BOM
15STS3215 Servo (12V version)
Alibaba / TaoBao$15 eachBambot hardware README eba23eb line 27
high
Motor Control BoardListed in the Bambot hardware README BOM
1Motor Control Board
Amazon / TaoBao$11 eachBambot hardware README eba23eb line 28
high
4" Omni wheelsListed in the Bambot hardware README BOM
34" Omni wheels
VEX Robotics / RobotShop / TaoBao 1$9.99 eachBambot hardware README eba23eb line 29
high
M2 M3 M4 Assorted Screw SetListed in the Bambot hardware README BOM
1M2 M3 M4 Assorted Screw Set
Amazon / taobao$14.99 eachBambot hardware README eba23eb line 30
high
Long 5264 wiresListed in the Bambot hardware README BOM
23P 1000 mm and 3P 400 mm wires with 5264 connectors
Taobao¥20 (CN link; US and EU price not listed by the project)Bambot hardware README line 31
high
Type C to DC wire (12V/5V)Listed in the Bambot hardware README BOM
1USB-C to DC cable, 12V or 5V version
Taobao¥20 (CN link; US and EU price not listed by the project)Bambot hardware README line 32
high
20000 mAh USB PD power bankListed under Other tools needed, outside the ~$300 BOM total
1power bank with USB-C PD output
you source itprice not listedBambot hardware README, Other tools needed section
high

Rows from the source's own parts list 4

hardware/README.md@eba23ebmarkdown

Source rowQtyPrice and vendorLine
STS3215 Servo (12V version)
15
AlibabaTaoBao$15
L27
Motor Control Board
1
AmazonTaoBao$11
L28
4" Omni wheels
3
VEX RoboticsRobotShop$9.99
L29
M2 M3 M4 Assorted Screw Set
1
Amazontaobao$14.99
L30

Bambot source files

8 files

Files stay in the upstream repository under their own licenses; these links open them there. The 3D model on this page is Motari's conversion of the file named under Simulation.

Bambot in simulation

Robot description files a simulator or CAD tool can load, linked at the commit they were found.

The 3D specimen on this page is converted from website/public/URDFs/bambot_v0.urdf at eba23eb.

Builds of Bambot

0 reviewed

No reviewed builds of Bambot yet.

A build log records the evidence (photos, a video, your repository), what the build cost, how long it took and what you changed. Each one is checked by Motari (until a maintainer claims this page) before it shows here, and reviewed builds count toward the reproducibility score.

Sources and provenance

Sources

Last push to timqian/bambot: 2025-07-14 (checked 2026-10-01)

Related links

How this page was made

Assembled from public sources on 2026-06-04, not yet reviewed by the maintainer. Each figure links to where it is stated; a value the sources do not state reads "not published". Last source review: hardware README BOM eba23eb parsed; total remains source-estimated.

Original files stay intact and separately licensed; Motari adds only the summary on this page. Maintainer? Request a correction or removal.

Badge for the README

Maintain Bambot? Show its reproducibility score in the project's README. The badge links back to this page and updates with the score.

Badge: reproducibility 65/100

Markdown
[![Motari reproducibility score for Bambot](https://motari.io/api/v1/badge/bambot)](https://motari.io/r/bambot)
HTML
<a href="https://motari.io/r/bambot"><img src="https://motari.io/api/v1/badge/bambot" alt="Motari reproducibility score for Bambot" height="20"></a>

Not fully met yet: cad / mesh present (partial), wiring diagram (partial), build instructions (partial). The score is read from the project's own sources, so publishing what is missing is what raises it. A score of 90 or more needs a reviewed build. How the score is computed