Kits and vendor part numbers

Vendors as listed in the upstream README plus Waveshare. Links only; no prices without a retrieved date. Not affiliated with any vendor.

RobotEd Switzerland

SO-101 robot arm kit: printed-frame, electronics, complete-arm

Sources (1)

SO-ARM100/README.md#kits

Robonine International

Parts kits: parts

Sources (1)

SO-ARM100/README.md#kits

PartaBot US

Assembled arms: assembled

Sources (1)

SO-ARM100/README.md#kits

ForgeMotion Labs US

SO-101 kits: printed-frame, electronics, complete-arm

Sources (1)

SO-ARM100/README.md#kits

Seeed Studio International

SO-ARM101 Arm Kit, Standard Edition: printed-frame, electronics
Servos: Leader: 1x ST-3215-C001 (7.4V, 1:345) joint 2, 2x C044 (7.4V, 1:191) joints 1 and 3, 3x C046 (7.4V, 1:147) joints 4–6. Follower: 6x C001 (7.4V, 1:345). Both power supplies 5V.
Hardware: Not itemised on the wiki.
SO-ARM101 Arm Kit, Pro Edition: printed-frame, electronics
Servos: Follower: 6x ST-3215-C018 / C047 (12V, 1:345) on a 12V supply; leader as Standard, on 5V.
Hardware: Not itemised on the wiki.

Seeed Studio ref	Upstream part
F1–F6	Feetech STS3215 servo, 7.4V, 1:345 gear (C001)	Seeed numbers servos, not printed parts; F = follower joint 1–6
L2	Feetech STS3215 servo, 7.4V, 1:345 gear (C001)
L1, L3	Feetech STS3215 servo, 7.4V, 1:191 gear (C044)
L4–L6	Feetech STS3215 servo, 7.4V, 1:147 gear (C046)
Seeedstudio_Mounting_Plate_SO101	Seeed Studio controller mounting plate	Upstream STL/STEP named for this vendor; its use is not described on the wiki

Seeed wiki numbers only the servos (F1–F6, L1–L6); its assembly section is images without part numbers. Wiki: https://wiki.seeedstudio.com/lerobot_so100m_new/

Sources (2)

SO-ARM100/README.md#kits
wiki.seeedstudio.com (retrieved 2026-09-07) — Specification table, servo/joint table

WowRobo International

SO-ARM101 DIY kit, assembled: assembled

Sources (1)

SO-ARM100/README.md#kits

RoboSEasy South Korea unverifiedno source yet

SO-101 kit: parts

README lists the vendor without stating what the kit includes.

Sources (1)

SO-ARM100/README.md#kits

NeoBot China unverifiedno source yet

SO-101 kit: parts

README lists the vendor without stating what the kit includes.

Sources (1)

SO-ARM100/README.md#kits

Autodiscovery EU unverifiedno source yet

SO-101 kit: parts

README lists the vendor without stating what the kit includes.

Sources (1)

SO-ARM100/README.md#kits

Waveshare International

SO-ARM101 3DP Parts Kit: printed-frame, electronics
Servos: Leader: IDs 1–3 ST3215, IDs 4–6 ST3215-HS; SE editions: ST3215 (SE) encoder-only x6. Follower: ST3215 x6.
Hardware: Wiki wording only: "four pointed screws (two on the top and bottom)" for the motor in the base, "flat head screws" for the shoulder onto the horn; sizes not stated. Kit contents not itemised.
SO-ARM101 No-3DP Parts Kit (SE): electronics
Servos: Leader: IDs 1–3 ST3215, IDs 4–6 ST3215-HS; SE editions: ST3215 (SE) encoder-only x6. Follower: ST3215 x6.
Hardware: Wiki wording only: "four pointed screws (two on the top and bottom)" for the motor in the base, "flat head screws" for the shoulder onto the horn; sizes not stated. Kit contents not itemised.

Waveshare ref	Upstream part
F1	Base	"base F1"
F2	Base motor holder	"base motor bracket F2"
F3	Rotation/pitch (shoulder)	"shoulder F3"
F4	Motor holder (base side)	"shoulder motor bracket F4"
F5	Upper arm	"upper arm F5"
F6	Under arm (forearm)	"forearm F6"
F7	Motor holder (wrist side)	"elbow motor bracket F7"
F8	Wrist roll/pitch (wrist holder)	"wrist bracket F8"
F9	Follower wrist roll (gripper body)	"Follower wrist F9"
F10	Moving jaw (gripper claw)	"Follower gripper F10"
F11	WaveShare controller mounting plate	"driver board bracket F11"
L1	Base	Leader steps 1–15 "are the same as those for the Follower"; L1 taken as the F1 role
L2	Base motor holder	Leader steps 1–15 "are the same as those for the Follower"; L2 taken as the F2 role
L3	Rotation/pitch (shoulder)	Leader steps 1–15 "are the same as those for the Follower"; L3 taken as the F3 role
L4	Motor holder (base side)	Leader steps 1–15 "are the same as those for the Follower"; L4 taken as the F4 role
L5	Upper arm	Leader steps 1–15 "are the same as those for the Follower"; L5 taken as the F5 role
L6	Under arm (forearm)	Leader steps 1–15 "are the same as those for the Follower"; L6 taken as the F6 role
L7	Motor holder (wrist side)	Leader steps 1–15 "are the same as those for the Follower"; L7 taken as the F7 role
L8	Wrist roll/pitch (wrist holder)	Leader steps 1–15 "are the same as those for the Follower"; L8 taken as the F8 role
L9	Leader wrist roll (leader holder)	"Leader wrist L9"
L10	Leader trigger	"Leader trigger L10"
L11	Leader handle	"Leader joystick L11"
L12	WaveShare controller mounting plate	"driver board bracket L12"
WaveShare_Mounting_Plate_SO101	WaveShare controller mounting plate	Upstream STL/STEP named for this vendor's bus servo adapter

Numbering F1–F11 / L1–L12 is Waveshare's (there is no F12). L1–L8 are not named in the text and are taken from the "same as follower" sentence. The F-numbered roles map to the parts that the assembly STEP places in those roles (Phase 2 placement check). Servo variants: see D-004.

Sources (2)

waveshare.com (retrieved 2026-09-07) — Servo Preprocessing table and Follower/Leader assembly steps
SO-ARM100/STEP/SO101/SO101 Assembly.step — placement check confirms the F2/F3/F4/F7/F8/F9 roles