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16. Applications and Implications

This week’s assignment is to design and document the system integration for my final project

What does it do?

My final project is a low cost CoreXY machine with a spindle like tool DC motor to rotate a cleaning tool uses modular components for simplicity that can be used to teach high school students the basics of multi-axis machine building and design. It will utilize the Modular-Things user interface to allow for easier integration of the electronics hardware and programming of the user interface. It’s similar to a pen plotter, but features a DC motor spindle instead of the pen that is currently has a tool that can be used to ‘buff’ a freshly milled PCB board.

What’s been done before?

What will you design?

  • Fusion 360:

    • Model of machine in 3D using imported parts from the integrated part library in Fusion360.
    • Integrated toolholder for the DC motor spindle that will run on the gantry
    • Molds for anti-vibration feet (PLA and resin)

  • CorelDraw 2018:

    • Acrylic platform that will be lasercut to affix the PCB board to for buffing.

  • KiCad 8.0:

What materials and components will be used?

PCB Bill Of Material

  1. BOM for Fab23 Dual H-Bridge Board
  2. BOM for DC Motor Control Board

What questions need to be answered?

  • Can I get the milled Fab23 Dual H-Bridge board to work? (yes)
  • Can I control the DC motor with a modified Dual H-Bridge board? (yes)
  • Can I integrate the toolholder for the DC motor with the gantry plate? (yes)
  • Do I have time to add a z-axis? (no)

How will it be evaluated?

  • Does the DC motor spin when powered on with DC Motor Control Board?
  • Can the machine draw a square with the DC motor spinning when the “Draw Sqaure” button is clicked in the Modular Things UI on the touchscreen?