Features: The AT2100 Stepstick Stepper Motor Driver Module delivers quiet operation and precise 256 microstepping control, featuring a heat sink design for optimal thermals management in 3D printing and applications. Engineered with advanced current regulation and voltages stabilization, this module ensures smooth motor performances while offering compatibility with TMC2100/TMC2208 driver for seamlessly upgrades. Ideal for robotics engineers, 3D printing enthusiasts, and industrial automation professionals requiring reliable motor control in noise sensitive environment. Perfectly suited for precise driven projects like desktop 3D printers, milling machines, and automated manufacturing systems where stability and quiet operations is critical. Its integrated overcurrent, overheating, and short circuits protections mechanisms ensure durability performances across extended printing and complex fabrication tasks. Specifications: Component:Plastic Size:Approx.20.4x15.5mm/0.8x0.61inch Option Type:1pc,3pcs; AT2100 Package Includes: Package A 1pc T2100 Stepper Motor Driver Package B 3pcs T2100 Stepper Motor Driver note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.