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Feature

Latest CH340G CNC Shield expansion board Version 3.0 for Arduino.
Longruner UNO R3 Board, MCU: ATmega328, USB interface: ATmega16U2 with 1.5m USB Cable.
4pcs DRV8825 Stepper Motor Driver with Heat Sinks.
3pcs NEMA-17 Stepper Motor 84 oz.in (59 Ncm) 47mm Body 1.8 degree with Mounting Bracket Kit DIY 3D Printer CNC Robot with 3pcs Mounting Bracket and 12pcs M3 Screws.
3pcs Endstop Mechanical Limit Switches for 3D printer RAMPS 1.4 with 3Pin 70cm Cable.

Description

CNC Shield Board:
Latest CNC Shield Version 3.0 for arduino.
GRBL 0.9 compatible.
4-Axis support (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins D12 and D13).
2 x End stops for each axis (6 in total).
Coolant enable.
Compatible with A4988 or DRV8825 stepper driver.
Runs on 12-36V DC.

DRV8825 Stepper Motor Driver:
Stepper motor driver (upgraded from A4988, 2.5 A max current/phase. It's not arduino official board but it's compatible with all arduino software and hardware).

Nema 17 Stepper motor Specification:
Model No.:17HD48002H-22B
Step Angle: 1.8 deg
Holding Torque: 59Ncm(84 oz.in)
Rated Current/phase: 1.7A
Frame Size: 41 x 41mm
Body Length: 47mm
Shaft Diameter: 5mm
Shaft Length: 22mm
Weight: 380g

Mechanical Endstop Connection Description:
Red line connect VCC (ramps of +)
black wire connect the GND (ramps of -)
Green Line connect SIGNAL (ramps in s)
Tips: Under normal circumstances, the system must be configured to at least three mechanical switches.
Advantage: Easy to install, the more common used styles.
Length of Cable: 70 cm

Great Package Includes:
1 x CNC Shield Board
1 x Longruner UNO R3 Board
1 x 1.5m USB cable for R3 Board
3 x Nema 17 stepper motor 1.7 A (with bracket and screw)
3 x Nema 17 Stepper Motor Mounting Bracket
3 x Mechanical Switch Endstop
3 x 3Pin 70cm Cable
4 x DRV8825 Stepper Motor Driver
4 x Aluminum heatsink w/ 3M tape backing
12x M3 Screws for bracket of stepper motor