Compact precision drive assembly designed for small motion projects, camera rigs, and DIY automation. This product combines a 5mm precision planetary gearbox with a linear screw metal slider and is built for use with 2phase, 4wire stepping motor systems and electronic starters. Why this product helps Precise, repeatable motion: the planetary gearbox improves positional accuracy and smooths stepper motor motion for fine control. Compact and robust: metal construction and a compact 5mm gearbox interface make it suitable for tight assemblies and lightweight rigs. Easy to integrate: designed around standard 2phase, 4wire stepping motor connections and electronic starter setups for straightforward wiring and control. Key features 5mm precision planetary gearbox: compact gear reduction for improved torque and finer step resolution. 2phase, 4wire stepping electronic starter compatibility: intended for use with standard 2phase, 4wire stepper motors and starter/controllers. Linear screw metal slider: provides linear translation with a metal slide for durable, lowwear motion in small assemblies. Metal construction: durable mechanical parts for reliable operation in DIY and prototype environments. Compatibility and attributes Functionality: gear reduction + linear motion for converting rotary stepper motion into precise linear travel. Compatibility: designed around 2phase, 4wire stepper motor systems and common stepping electronic starters/drivers. Size reference: 5mm precision gearbox interface; compact form suited to smallscale projects. Material: metal gearbox and metal slider components for longevity and stable operation. Performance: improves torque and step resolution compared with unaided stepper output (specific torque and ratio depend on motor and driver used). Practical use cases DIY camera focus or macro rail: convert stepper rotation into smooth, precise linear movement for remote focus pulls or repeatable focus stacking. Small robotics and automation: compact actuator for micromanipulators, sensor positioning, or model mechanisms requiring fine linear displacement. Prototype optical or measurement rigs: reliable positioning of lenses, sensors, or testing fixtures where precise incremental movement is required. Integration tips Match wiring and driver settings to a 2phase, 4wire stepper motor and the electronic starter or driver you are using; observe correct phase wiring for full and microstepping modes. Secure mounting and alignment of the slider and gearbox will reduce binding and wear; metalonmetal contact benefits from appropriate lubrication per application. Evaluate required travel, step resolution, and torque for your specific motor and driver combination to achieve the desired performance. This assembly is intended for makers, hobbyists, and developers needing a compact, metal planetary gearbox and linear slider solution compatible with standard 2phase, 4wire stepper systems for camera and small automation projects.