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Smoother Description: This smoother is mainly for the elimination of printed marks produced by 3D printers and the parallel arm structure, can effectively eliminate low-speed non-uniform waveform signal so as to achieve a relatively flat signal waveform. Features: 1. Plug and play, no wiring required 2. Effective to use DRV8825 Stepper Motor Driver Features: Simple step and direction control interface The interface can connect directly with 3.3V and 5V systems Support over-temperature thermal shutdown, over-current shutdown and under-voltage lockout Support short-to-ground and shorted-load protection Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step 4-layer, 2 oz copper PCB for improved heat dissipation Adjustable current control support you to set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor's rated voltage to achieve higher step rates Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) 45V maximum supply voltage Built-in regulator (needed external logic voltage supply) Package Included: 1x Stepstick Smoother 1x DRV8825 Stepper Motor Driver