RATTMMOTOR 3D Printer CNC Controller Kit Compatible with Arduino IDE, Nema17 Stepper Motor+UNO R3 Improvement Borad+CNC GRBL Shield Board V3 Expansion Board+DRV8825 Drivers+Mechanical Switches - RTM, 3D-4401J

• UPC   754193620124
• 【Nema17 Stepper Motor】Step angle: 1.8deg. Rated current: 1.7A. Holding torque: 0.45Nm (64 oz.in) . Size: 40mm. Phase: 2. 1.8 ° ± 5% step angle (200 steps / rotation) 【UNO R3 Improvement Borad】 UNO is a Simple I/O platform based on open source code, and has a Processing/Wiring development environment similar to Java and C language, which is easy to understand, allowing you to quickly use UNC to make interesting things 【CNC Shield Board V3 Expansion Board】This expansion board can be used as a drive expansion board for engraving machines, 3D printers, etc. 【DRV8825 Stepper Motor Driver】Six different stepping modes: full, half, 1/4, 1/8, 1/16, 1/32. The adjustable potentiometer can adjust the maximum current output, so as to obtain a higher step rate. 【Mechanical Switches with 3-pin Cable】Under normal circumstances, the system needs to be equipped with at least 3 mechanical switches.easy to install, more common styles.