BZ 3D A4988 Stepstick Stepper Motor Driver Module  with Heat Sink for 3D Printer Controller Ramps 1.4 MKS Gen L SKR V1.3 Board for 3D Printer Part(Pack of 5pcs)

-Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) 
-Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection 
-Automatic current decay mode detection / selection 
-Internal UVLO
  -Mixed with slow current decay modes 
-Synchronous rectification for low power dissipation 
-Crossover-current protection 
-Thermal shutdown circuitry 
-3.3 and 5 V compatible logic supply 
-Thermal shutdown circuitry 
-Ground Fault Circuit 
-Load short-circuit protection 
-Of five optional step mode: full, 1/2, 1/4, 1/8 and 1/16

Chip upgrade Using the latest high-quality chips, higher compatibility and better conductivity.(It is believed that only high quality products can ensure the quality of your work and bring safety to your work.)

Product Features

  • Compared with ordinary A4988, our high quality A4988 drive production process is improved again by PCB gold plate process (gold-plated pin) SMT placement machine manufacturing, non-manual welding, higher yield and more stable performance.
  • Performance upgrade: PCB covering copper process upgrade to 2oz (our high-quality copper thickness 70um, ordinary 35um), higher copper content, better heat dissipation performance.
  • Under 2A current, it can work for a long time. It is very suitable for 3D Printer, Mendel, Huxley and other machines.
  • Using the latest chips, higher compatibility and better conductivity
  • Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage toachieve higher step rates.

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KeeYees Professional 3D Printer CNC Kit with Tutorial for Arduino, CNC Shield V3 w/Jumpers + UNO R3 Board + 4Pcs RAMPS 1.4 Mechanical Switch Endstop & DRV8825 GRBL Stepper Motor Driver Heat Sink

CNC Expansion Board:
-GRBL 0.9 compatible
-Runs on 12-36V DC
-4-Axis support: X, Y, Z
-It can drive 4 stepper motors, and each stepper motor only needs 2 IO ports.
That is to say, 6 IO ports can manage 3 stepper motors very well,
which is very convenient to use.

KeeYees UNO R3 Board:
-Microcontroller: ATmega328P
-Chip: ATmega16U2 
-Operating Voltage: 5V
-Input Voltage (recommended):7-12V
-Input Voltage (limit):6-20V
-Flash Memory: 32 KB of which 0.5 KB used by bootloader
-Digital I/O Pins: 14 Digital I/O Pins (6 PWM outputs)
-Analog Input Pins: 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA
-SRAM: 2 KB
-EEPROM: 1 KB
-Clock Speed: 16 MHz
Tips: Find more information about Arduino UNO R3 with the Expansion Board IO Port with our tutorial.

DRV8825 Stepper Motor Driver:
-Applied for driving stepper motors up to 8.2V-45V 2.5A
-4-layer PCB board (better heat dissipation)
-6 different step resolutions:
full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step

Mechanical Switch Endstop:
-Length of Cable: 70 cm
-Red line — VCC (ramps of +)
-Black wire — GND (ramps of -)
-Green Line — SIGNAL (ramps in s)

Package Contents:
1 x CNC Shield Board
1 x KeeYees UNO R3 Board
4 x DRV8825 Stepper Motor Driver with Heat Sink
4 x RAMPS Mechanical Switch Endshop
20 x 2.54mm Black Jumper Caps
1 x 1.5m USB cable for UNO R3 Board

Product Features

  • 【KeeYees UNO R3 Board】 KeeYees UNO R3 Board uses the same ATmega328 and ATMega16U2 as official Uno R3 and 100% compatible with the official version. It comes with free 1.5m USB cable for convenient connection.
  • 【CNC Expansion Board with Free 20pcs Jumpers】This is the latest version of the expansion board, which can be used for engraving machines and 3D printers. It can drive 4 A4988/DRV8825 stepper motors. The jumper caps are necessary for CNC setups. You do not need to purchase this part extra.
  • 【DRV8825 Stepper Motor Driver w/ Heat Sink】DRV8825 is upgrade of A4988! It is a must-have module for 3D printers, CNCs and engraving machines. The 4-layer PCB board has better heat dissipation performance. 
  • 【Mechanical Switch Endstop】It uses a 22AWG wire that can withstand a current of 2A and a voltage of 300V. Better quality than traditional copper wire. It can reach the insulation temperature of 80℃. It is not easy to break, and very convenient to plug and remove.
  • 【Reliable technical support】If you don’t have a CD drive, please visit our website( www.keeyees.com ) to get relevant information or can contact us on Amazon, we will send PDF Document to you.

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3D Printer Parts and Accessories, FYSETC 3D Printer Limit Switch Mechanical Switch Module Endstops Switch with 3 Pins 39.4 inch Cable for Ramps RepRap Tevo Tornado- 3 Pcs

Specification:

1. Max Voltage: 250V
2. Max Current: 5A
3. Board size: 20 x 20 x 7 mm/ 0.8 x 0.8 x 0.3 inch
4. Cable length: 1 meter (39.3 inch)

Package includes:
3 x 3D Printer limit switch
3 x 3 Pins Cables

Product Features

  • Original Tevo 3D Printer Parts, Optical Endstop switch with 1M Photoelectric Light Control;
  • Endstops for 3D Printer: usedd for Tevo, if you want to in all creality 3D Printer, CR -10 CR 10S S4 ,S5, please research another item: B07PKPDMRL ;
  • Must 3D Printer Limits: With trigger indicator, 3 Pin N/O N/C control, easy to use Micro Switch;
  • Warm Tips: Generally, the printer DIY system need at least three optical switches;
  • After-sales guarantee: we are responsable for our every product, if you received desfective or did not work well, please feel free to contact us, we will resend you replacement for free or refund you.

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