Robotpark MF-70 CNC Kit Electronic Parts

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Product Code: 95120
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Product Description
  • Electronic parts of the original Robotpark MF-70 CNC Kit
  • Allows you to control small-to-medium manual controlled milling machines like a CNC machine
  • Converts G-code commands coming from the serial port of the computer to suitable motor control signals
  • The parts are assembled inside a box
  • Allows the user to choose his/her own mechanical system
$80.00
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Robotpark MF-70 CNC Kit Electronic Parts info

With Robotpark MF-70 CNC Kit you can convert your standard MF-70 micro milling machine to a computer controlled CNC milling machine and process your parts much more quickly and precisely. You can even create your own PCBs on a copper plate. You can check the original kit using this link.

Robotpark MF-70 CNC Kit simply consists of two sub systems. First sub system which is called mechanical system is used to mechanically convert the control method of micro milling machine from standard hand wheels to step motors. Second sub system which is called electronical system is used to convert the CNC commands called G-codes to signals suitable for the steppers and control the steppers electrically. Due to that distinction between these two subsystems the mechanical parts and the electronical parts of the original kit can be purchased separately.

Electronic parts in this kit are one original Arduino Uno microcontroller board, one CNC Shield, three A4988 stepper motor driver breakouts, one SBS-1005T box which all the parts are mounted on. CNC Shield in the electronic box operates with three A4988 stepper drivers. These drivers support up to 16x microstepping. The x and y axis on the CNC shield are set to work at 8x and the z axis is set to work at 2x microstepping by default. These settings are also used in the original Robotpark MF-70 CNC Kit. To change default microstepping settings, you should change the jumper setup on the CNC shield. You can check the Protoneer link in the Documents section for further information.

Similar to Robotpark MF-70 CNC Kit, the CNC controls in the electronic parts kit are also done using grbl protocol. Arduino Uno is programmed properly to be able to convert any CNC command to a suitable motor driver command. To send G-code lines to the electronic box, you can check the electronics section of the Robotpark MF-70 CNC Kit Setup Guide.

For connecting the steppers to the electronics box, you need to know which socket pin goes to which pin of the A4988 driver attached to the CNC shield. Table below shows the socket pin and A4988 input pin arrangements. To solder the stepper cables to the socket pins of the box, you should also know your steppers cable winging relationship. To find this relationship there are some examples you can use. You can check the Documents section for these examples.

   Socket Pin

   A4988 Pin

         1

        1B

         2

        2B

         3

        2A

         4

        1A

 

 

Robotpark MF-70 CNC Kit Electronic Parts - General Specifications

  • Electronic parts of the original Robotpark MF-70 CNC Kit
  • Allows you to control small-to-medium manual controlled milling machines like a CNC machine
  • Converts G-code commands coming from the serial port of the computer to suitable motor control signals
  • The parts are assembled inside a box
  • Allows the user to choose his/her own mechanical system

 

Robotpark MF-70 CNC Kit Electronic Parts - Technical Specifications

Kit includes;

  • 1x Original Arduino Uno
  • 1x CNC Shield
  • 3x A4988 Stepper Motor Driver
  • 1x SBS-1005T Box
  • 3x Step Motor Socket

 

Documents

Robotpark MF-70 CNC Kit Setup Guide

Microstepping Settings: http://blog.protoneer.co.nz/arduino-cnc-shield-v3-00-assembly-guide/

Determining the Stepper Wires-1: http://www.instructables.com/id/Find-Bipolar-Stepper-Motor-Coil-Pairs/

Determining the Stepper Wires -2: http://digital.ni.com/public.nsf/allkb/0AEE7B9AD4B3E04186256ACE005D833B

 

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