Heads up: many models on this page are AI-generated or uploaded untested. They may be misconfigured for the intended application — check the dimensions and tolerances, and verify or edit the model before printing or relying on it.*
Biped Rolling Foot Plate
Black 90 x 58 x 3 mm foot sole with a 36 mm wide, 6 mm thick horn upright, part of the 'SG90 Parallelogram-Leg Biped Walker' kit. An SG90 horn fits flat against the rear face, with its hub in a 5.5 mm vertical slot. Two M2x10 self-tapping screws go through 2.4 mm slots (r = 5–16 mm), which come in three rows at 30, 34 and 38 mm above the sole for height adjustment. The ankle block has space to roll ±20° behind the upright. Print two, one mirrored in Y.
Ankle Roll Servo Block
This is the ankle block for the 'SG90 Parallelogram-Leg Biped Walker' kit, 44 x 24 x 58 mm. An SG90 ankle-roll servo sits upright in a 23.6 x 12.8 mm front-wall window, held by two M2x10 screws and nuts through tab slots. A 6 mm lug on top has two 3.4 mm pivot holes 32.0 mm apart for the leg links, fastened with M3x20 screws and nyloc nuts. Prints upright with no supports, and one design fits both legs.
Parallel Follower Leg Link
This is the passive follower link for the 'SG90 Parallelogram-Leg Biped Walker' kit. It is 74 x 14 x 6 mm, has full-round R7 ends and two 3.4 mm pivot holes exactly 60.0 mm apart, and a 1.5 x 8 mm stiffening rib runs between them. The top end bolts to the torso's I4 slot and the bottom end to the ankle lug's inboard face, each with an M3x20 socket head screw, washers and an M3 nyloc nut, so the ankle stays level as the leg swings.
Hip Horn Drive Link
Red 87 x 40 x 6 mm drive link for the 'SG90 Parallelogram-Leg Biped Walker' kit. A 40 mm horn pad holds an SG90 horn with two M2x10 self-tapping screws through 2.4 mm radial slots (r = 5–16 mm) around a 5.5 mm centre hole. 60.0 mm away, a 14 mm boss has a 3.4 mm hole for the M3x20 pivot screw and nyloc nut into the ankle lug. Print two and flip one for the other leg.
Biped Electronics Battery Deck
This black 80 x 70 x 3 mm top deck is part of the 'SG90 Parallelogram-Leg Biped Walker' kit. It bolts onto the Biped Hip Servo Torso's heat-set posts with four M3 screws through 3.4 mm holes on a 64 x 52 mm rectangle. It carries a 4xAA battery holder, strapped on with a zip tie, and a controller on standoffs that screw into a 5 x 5 grid of 3.4 mm holes at 10 mm pitch. A 3 x 4 mm stiffening lip on the underside stops the deck warping or flexing and stays clear of the torso posts. A 30 x 8 mm pass-through carries the servo wires.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Biped Hip Servo Torso
An 80 x 70 x 32 mm open torso frame for a small biped robot. Both side walls have a 23.6 x 12.8 mm window with tab slots for a micro-servo (SG90 size) to drive each hip. Each side wall also has an M3 pivot hole for a follower link. The top deck has four 4.0 mm bores for M3 heat-set inserts, and the base plate has a lightening cutout to save weight.
Knee-Driven Lower Leg With Foot
A 145 mm lower-leg shank and foot for a small servo-driven walker. The knee hub bolts to a round servo horn using radial M3 slots that fit a range of horn patterns, and it has a 9 mm spline-clearance hole. A 625 bearing (5 x 16 x 5 mm) presses into the upper boss, and an M5 bolt runs through it as the outboard pivot, so the servo shaft doesn't take the side load. The shank is a flanged, tapered I-beam and the stadium foot is hollowed to save weight.