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SG90 Tibia Foot Link
The lower leg and foot for the 'SG90 18-DOF Hexapod Walker' kit (print 6). It is a tapered link 90 x 20 x 6 mm. It fits an SG90/MG90S single-arm horn in a 1.5 mm recess (a 9 mm circle plus a 6.5 mm slot to 19 mm), and a 6 mm hole gives access to the horn screw. You fix the horn with M2x6 self-tappers drilled through its own holes. The foot tip sits 80 mm from the pivot, has a 5 mm radius and 1 mm chamfers so it rolls cleanly, and a 5 x 36 mm slot takes out weight.
SG90 Femur Thigh Servo Link
The thigh (femur) link for the 'SG90 18-DOF Hexapod Walker' kit (print 6). It is a flat 81 x 22 x 4 mm link. The pivot end screws to an SG90/MG90S horn using M2x6 self-tappers: there is a 6 mm through-hole, and a 1.5 mm deep recess (a 9 mm circle plus a 6.5 mm slot) keeps the horn from turning. The other end holds the tibia SG90/MG90S servo in a 23.4 x 12.8 mm pocket 50 mm from the pivot. Its slotted M2 tab slots take tab hole spacings from 26 to 31.6 mm.
SG90 Coxa Hip Yoke Bracket
The hip yaw link for the 'SG90 18-DOF Hexapod Walker' kit (print 6). It is an L-bracket 66 x 18 x 36 mm. The 4 mm base screws to the hip servo's horn through a 6 mm pivot hole, and a 1.5 mm horn recess (a 9 mm circle plus a 6.5 mm slot) keeps the horn from turning. The 4 mm wall holds the femur SG90/MG90S servo in a 23.4 x 12.8 mm pocket, 28 mm outboard and 17 mm above the horn face. Its slotted M2 tab slots fit tab spacings from 26 to 31.6 mm, with M2x10 screws and nuts.
2S 18650 Strapped Battery Tray
The battery tray for the 'SG90 18-DOF Hexapod Walker' kit. It is a 46 x 76 x 16 mm open tray with a 40 x 70 mm cavity that holds a side-by-side 2S pack of two 18650 cells (18.4 x 65 mm each) with room for the BMS leads. Four M3 holes at (±10, ±30) have captured M3 hex-nut pockets, so M3x10 screws from under the deck hold it on. A 20 mm hook-and-loop strap goes through the 22 x 3 mm wall slots and under the pack, and a 10 x 8 mm notch lets the leads out.
Flagged: battery or DC power. Not for safety-critical use without independent engineering review.
Hexapod Standoff Electronics Deck
The upper electronics deck for the 'SG90 18-DOF Hexapod Walker' kit. It is a 64 x 110 x 3 mm plate with 20 mm corner chamfers and a full 45-hole M3 grid (3.4 mm holes on a 10 mm pitch). Four M3x30 F-F standoffs and M3x8 screws hold it 34 mm above the chassis. The 2S 18650 battery tray bolts on with M3x10 screws, and four 4 x 20 mm slots take zip ties for the servo controller and wiring. The plate stays inside ±32 mm in X, so the coxa brackets can swing freely.
Hexapod Chassis Base Plate
The main body of the 'SG90 18-DOF Hexapod Walker' kit: a 164 x 124 x 4 mm plate with 30 mm corner chamfers and six SG90/MG90S hip-servo pockets (23.4 x 12.8 mm). Each pocket has slotted M2 tab slots that take tab hole spacings from 26 to 31.6 mm, so one plate fits most micro servos. It also has four 3.4 mm M3 standoff holes at (±20, ±30) for M3x30 standoffs to the deck, a 24 x 40 mm central wiring pass-through, and front and rear cable slots. It uses about 61 cm³ of material.