Heads up: kits are AI-designed and haven't been test-built. Parts may not fit together or match your hardware as-is — print one part and dry-fit it before printing the rest or buying hardware.*
NEMA17 Self-Balancing Robot Frame
A three-deck, two-wheel self-balancing robot frame for a pair of NEMA17 steppers, with 90 mm set-screw wheels, tip-over skids and a top-mounted 18650 battery tray.
NEMA17 Belt-Drive Camera Slider
A motorized camera slider on twin 8 mm rods. A NEMA17 drives a GT2 belt, and a four-LM8UU carriage carries the camera for smooth time-lapse and video moves.
NEMA17 Rack-and-Pinion Parallel Gripper
A stepper-driven parallel gripper. One NEMA17 pinion drives two opposed racks, and the jaws slide on 8 mm rods with LM8UU bearings. It opens from 4 to 56 mm and mounts to 2020 extrusion.
NEMA17 Leadscrew Push-Pull Actuator
A compact linear actuator for props and animatronics. A NEMA17 turns a T8 leadscrew, and a carriage on twin 8 mm rods pushes and pulls through a clevis with about 120 mm of travel.
NEMA17 Geared Radar Scan Turret
A stepper-driven pan turret: 3:1 printed gears turn a head that spins on two 608 bearings, with a lockable tilt cradle and an M3 grid face for an ultrasonic sensor, ToF sensor or camera.
SG90 Animatronic Eye Mechanism
A two-servo animatronic eye rig. Two 30 mm eyeballs pan and tilt together on printed gimbal yokes, driven by a pan servo through a scotch yoke and a tilt servo through a slotted paddle.
N20 4WD Skid-Steer Rover Base
A printed 4WD skid-steer rover for four N20 gearmotors, with a 2S 18650 cradle, a raised Raspberry Pi 4 deck and a front bumper with a sensor grid.
SG90 Four-Axis Desktop Robot Arm
A 4-axis desktop robot arm that runs on four SG90 servos. It has a turning base, a shoulder carried on a 625 bearing, an elbow and a geared parallel gripper. There are eight printed parts.
SG90 3-DOF Ball-Balancing Platform
A 3-servo parallel platform that tilts and lifts a 150 mm tray. It uses snap-fit printed ball joints and is sized for PID ball-balancing on three SG90s.
NEMA17 Cantilever Pen Plotter
A GRBL pen plotter: two NEMA17s drive a cantilevered X arm on 8 mm rods and LM8UU bearings, with a guided, SG90-driven pen lift. Draws up to 240 x 260 mm.
NEMA17 Twin-Motor Strandbeest Walker
A four-legged Theo Jansen walker at 2x scale. Each side has its own NEMA17, so it steers like a tank. It uses M4 pivots and a numbered layer stack so the separately printed links line up.
NEMA17 Cycloidal Joint Actuator
A stackable 15:1 cycloidal gearbox that bolts onto a NEMA 17. It uses rolling 5 mm steel ring pins and a 625-supported output face, and makes a stiff, low-backlash rotary joint for robot arms.