Parts · hardware
Servo horn, geared (drive side) approximation3D stand-in
Details
- Id:
servo-horn-geared - Quantity: 12
- Arms: follower, leader
- Name in the assembly CAD: 金属舵盘(驱动)
Ships with the servo. "Each servo is equipped with two steering wheels, one with gears and the other without" (Waveshare). Qty = one per servo for two arms. Geometry: drawn from the datasheet Accessories drawing: ø19.95 plate 2.5 thick, ø9 hub to 4.5 overall, ø3.2 centre bore, 4-M3 on ø14; the plate outline is drawn as the circle (the drawing shows a polygon whose side count is not dimensioned) and the 25T spline is not modelled. Placed on the embedded vendor horn's transform; the vendor mesh is not redistributed.
Used in
- F-010 Fit both horns on motor 1 (shoulder pan)
- F-020 Fit both horns on motor 2 (shoulder lift)
- F-030 Fit both horns on motor 3 (elbow flex)
- F-040 Fit both horns on motor 4 (wrist flex)
- F-051 Fit one horn only on motor 5 (wrist roll)
- F-062 Fit both horns on the gripper motor
- L-010 Fit both horns on motor 1 (shoulder pan)
- L-020 Fit both horns on motor 2 (shoulder lift)
- L-030 Fit both horns on motor 3 (elbow flex)
- L-040 Fit both horns on motor 4 (wrist flex)
- L-051 Fit one horn only on motor 5 (wrist roll)
- L-062 Insert the gripper motor and fit its horn
Sources (4)
- waveshare.com (retrieved 2026-09-07) — Follower step 2
- lerobot/docs/source/so101.mdx#joint-1 — "Install both motor horns"
- mantech.co.za (retrieved 2026-09-08) — section 10 Accessories drawing: ø19.95, ø14 bolt circle 4-M3, ø9 hub, thicknesses
- SO-ARM100/STEP/SO101/SO101 Assembly.step — placement transform from the embedded vendor horn 金属舵盘 (vendor extent ø19.2, not used)