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Mount the controller board on its plate and fit it to the base Loading 3D view…
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Put the control board Control board. The small circuit board (a Waveshare bus servo adapter) that connects to your computer by USB and to motor 1 by a 3-pin cable. It powers and talks to all six motors through the chain and sits on a printed plate on the base.Source: lerobot/docs/source/so101.mdx#2-set-the-motors-ids-and-baudrates · waveshare.com src Clip the plate onto the base motor holder using the square block on the back of the plate. src waveshare.com — Follower step 19 / Leader step 20: driver board on bracket, attached to the base motor bracket by the square component on its back check — Board on the plate; plate clipped to the base motor holder; a cable from motor 1 reaches the board. Make sure a cable from motor 1 can reach the board. src check — Board on the plate; plate clipped to the base motor holder; a cable from motor 1 reaches the board. Done when Board on its plate, plate clipped to the base motor holder, and motor 1's cable reaches it.
waveshare.com Follower step 19 / Leader step 20: driver board on bracket, attached to the base motor bracket by the square component on its back lerobot/docs/source/so101.mdx#2-set-the-motors-ids-and-baudrates "the controller board, which can now be attached to the base of the arm" SO-ARM100/STEP/SO101/SO101 Assembly.step placement check (viewer/public/geometry/placements.json): WaveShare_Mounting_Plate touches both the base motor holder and the controller-board model (0 mm gap) Notes: Fastener count for the board is not given by any source.
Check: Board on the plate; plate clipped to the base motor holder; a cable from motor 1 reaches the board.
How we placed it: Part role confirmed by placement in the upstream assembly STEP: WaveShare_Mounting_Plate touches both the base motor holder and the controller-board model (0 mm gap).
You need Control board Motor control board (Waveshare bus servo adapter) motor-control-board approximation3D stand-in Stand-in shape: the 3D geometry or placement is not measured from the real part.
One per arm. Set both jumpers to the B (USB) channel before configuring motors (LeRobot troubleshooting). Geometry: the assembly STEP embeds a vendor PCB model of unknown provenance; the pipeline exports a bounding-box primitive instead (approximation).
details Control board plate (Waveshare) WaveShare controller mounting plate waveshare-mounting-plate-so101 details Base motor holder Base motor holder base-motor-holder-so101 details Sources (3) How we placed it Part role confirmed by placement in the upstream assembly STEP: WaveShare_Mounting_Plate touches both the base motor holder and the controller-board model (0 mm gap).