Description: This stepper motor driver adopts super high 1/128 step and 4-level PCB to achieve silent 3D printing with easier operation. 6-36V working voltage allows it to adjust its output for better printing effect. And built-in heat dissipator helps dissipate heat that caused by long time operating to lengthen its service life. Features: 1/128 Step - This stepper motor driver adopts super high 1/128 step to achieve silent 3D printing without noise. 4-level PCB - Adopting workmanship of 4-level PCB to ensure the stability and smoothness of 3D printing. Makes printing more efficient. Faster Heat Dissipation - The stepper motor controller comes with a heatsink to help dissipate heat that caused by long time operating to make heat dissipation faster. Stable Voltage - Adopting 6-36V voltage to make voltage and current stable for better operation. Made for 3D Printer - It is specially designed for 3D printer to create a silent 3D printing. Specifications: Product type: Stepper Motor Driver Supported s1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128tep Workmanship: 4-level PCB Voltage: 6-36V Maximum driving current: 1.8A Built-in heatsink: YES Package size: approx. 12 * 8 * 2 cm/ 4.72 * 3.15 * 0.79 in Package weight: 8g Notes: 1. One side of this driver is blue, the other side is black. 2. Please check the direction before charging, or chip will be damaged. Package List: 1 * Stepper Motor Driver 1 * Heatsink 1、1/128 Step - This stepper motor driver adopts super high 1/128 step to achieve silent 3D printing without noise. 2、4-level PCB - Adopting workmanship of 4-level PCB to ensure the stability and smoothness of 3D printing. Makes printing more efficient. 3、Faster Heat Dissipation - The stepper motor controller comes with a heatsink to help dissipate heat that caused by long time operating to make heat dissipation faster. 4、Stable Voltage - Adopting 6-36V voltage to make voltage and current stable for better operation. 5、Made for 3D Printer - It is specially designed for 3D printer to create a silent 3D printing.