Abstract: In this paper we are designing a low cost three axis Mini CNC Plotter using stepper motor, Arduino microcontroller and motor control software. In 1775 for the operations like cutting, shaping etc. a Canon boring machine or Lathe was invented but it can do only one work at a time and also other disadvantages like requirement of regular monitoring, skilled labours and less accuracy. In 1947 Mr John parsons tried to control machine tool motion using three-axis curvature data which was further developed for the invention of modern CNC machine. But this one is of high cost and its construction is very difficult. In our project we are trying to create a low cost CNC plotter of small or medium size and an open structure.
Keywords: CNC, Arduino microcontroller, part program, interpolator.