Mechanics
Most of this group has no electronics at all. Chassis, wheels, hubs and linear actuators are sizing decisions — match shaft diameter, bore and mounting pattern before torque specs.
Robot chassis (2WD miniQ, 4WD mecanum, 6WD outdoor), mecanum wheels (48–97mm), brass hex hubs (4–6mm), shaft couplers, 2GT timing pulleys and uArm robotic arms.
- Mecanum wheels come in 48, 60, 65, 80 and 97mm diameters and in left/right-handed pairs; the 60mm and 65mm versions ship with motor shaft couplings, and only the 65mm wheels are all-metal.
- Chassis range from the 2WD miniQ and Seeed's 2WD Arduino-compatible platform to 4WD mecanum kits and outdoor platforms; arms include the uArm Swift and a Raspberry Pi-based six-axis arm.
- Brass hex hubs (4, 5 and 6mm), 4–10mm shaft couplers, 2GT timing pulleys and metal caster bearing wheels are the fit-critical small hardware — check bore diameter against your motor shaft first.
