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humanoidrobot.build

Every way to get it

Get SO-101 (SO-ARM101)

The Robot Studio / Hugging Face · open hardware

Buy it from the maker, source the parts yourself, print or outsource the printed parts, or hire someone who has built one. Same numbers, side by side, then a helper that picks one for your budget, tools, time and experience.

L2Sim-verifiedBuild package →Printables →
Maker sale
Kit
Parts, best region
$230+ US
Printer time
—
Fully buildable
yes
Fig 1/4RenderSO-101 (SO-ARM101) studio render, three-quarter front view
Studio render of the published MJCF, the model's zero pose. Geometry only; colours are the model's own materials.© Rendered by Hyperspawn from mujoco_menagerie/robotstudio_so101 (Apache-2.0) · Hyperspawn render · source
Ship parts to
01

Side by side

Figures from the package · US prices
A

Kit from the maker

Kit
What you getThe maker's kit. You assemble it along the step graph.
Cost$220Seeed motor kit $220 (Standard) / $240 (Pro) for a leader+follower pair; printed parts ~$35 extra; DIY from ~$130
TimeAssembly ≈ 1 h stated
ToolsFDM printer, 220x220 mm bed or larger · PLA+ filament · FDM printer · Slicer (Bambu Studio, PrusaSlicer or Cura) · Putty knife · +8 more
Skill21 steps6 safety-critical
Unknowns
  • None recorded
seeedstudio.com
B

Source the parts

8/10 priced
What you getA cart of 10 BOM lines (21 parts) across vendors, maker's store first.
Cost$230+2 lines unpriced.
  • IN$230 · 2 n/a
  • US$230
  • EU$230 · 2 n/a
  • CN$230 · 2 n/a
Vendor price where stated, else the package list price. n/a = lines with no vendor there.
TimeAssembly ≈ 1 h stated20 steps without a timePackage caveat: The follower comes in two servo options: 7.4 V STS3215 (16.5 kg·cm stall at 6 V, less on the 5 V supply) or 12 V STS3215 (30 kg·cm), which also needs a 12 V 5 A+ supply. The SO-101 leader is always 7.4 V. Upstream found 7.4 V sufficient.Package caveat: Leader gear ratios are easy to mix up. C001 (1/345) is also the follower part; the leader needs 2x C044 (1/191) on joints 1 and 3 and 3x C046 (1/147) on joints 4-6. Upstream lists no CN (TaoBao) link for C044 or C046.
ToolsFDM printer, 220x220 mm bed or larger · PLA+ filament · FDM printer · Slicer (Bambu Studio, PrusaSlicer or Cura) · Putty knife · +8 more
Skill21 steps6 safety-critical
Unknowns
  • 2 line prices
  • Shipping, duties, taxes
Open the cart
C

Print it, or have it printed

29 printed
What you get29 printed parts.
Cost—No grams in the package, so no filament cost. Print services quote from the files.
TimePrint time not stated.
ToolsFDM printerBed ≥ 220 × 220 mm (stated)
SkillPLA
Unknowns
  • 29 parts with no grams or hours
  • Print-service prices
Printables list
D

Hire a builder

Certified at L5
What you getSomeone who has built this robot assembles it for you, or with you.
CostQuoteParts plus labour. No builder rates are published yet.
TimeSet with the builder.
ToolsNone
SkillNone
Unknowns
  • No certified teams yet: certification needs L5, SO-101 (SO-ARM101) is L2.
  • Availability near you
Crew on humanoidrobots.team
02

Which way is yours

Rules, not a model · every reason is shown
Tools you have
Time
Experience
Recommended path$220

Buy the maker's kit

  • ✓About 1.0 h of hands-on assembly fits a month.
  • !6 safety-critical steps (power, battery). Have someone experienced check them.
Go
  1. 02Hire a builderNo certified teams yet (needs L5; SO-101 (SO-ARM101) is L2).quote
  2. 03Source parts, use a print servicePrint-service quote not included; we hold no service prices.$230 + print quote
  3. 04Source parts, print at homeNeeds an FDM printer; you have none ticked.$230+
03

Build readiness

What makes a robot fully buildable
  • ■Open hardware (CAD + BOM public)yes
  • ■Build package compiledyes
  • ■BOM lines with a vendor10/10
  • ■Fabrication list17 entries
  • ■Assembly steps, each with a check21/21
  • ■Firmware describedyes
04

Honest unknowns

What this page cannot tell you
  • 2 of 10 BOM lines carry no price.
  • Lines with no vendor, by region: IN 2, EU 2, CN 2.
  • 29 printed parts have neither grams nor print time.
  • 20 assembly steps have no time estimate.
  • Resale and used units: not tracked.
  • Shipping, duties and taxes: not included anywhere on this page.

Lead-time notes from the package

  • Package caveat The follower comes in two servo options: 7.4 V STS3215 (16.5 kg·cm stall at 6 V, less on the 5 V supply) or 12 V STS3215 (30 kg·cm), which also needs a 12 V 5 A+ supply. The SO-101 leader is always 7.4 V. Upstream found 7.4 V sufficient.
  • Package caveat Leader gear ratios are easy to mix up. C001 (1/345) is also the follower part; the leader needs 2x C044 (1/191) on joints 1 and 3 and 3x C046 (1/147) on joints 4-6. Upstream lists no CN (TaoBao) link for C044 or C046.