Print Head

• Plotters print individual dots. While creating a sophisticated print head to create individual dots can be an imposing engineering feat, there is a simpler alternative. Use a ballpoint pen, with a solenoid to press it down.
  
  

Stepper Motors

• To print an image, the device needs to know where the plotting point is in relation to the paper it is printing on. Employing a stepper motor is an easy way to solve this hardware challenge.
  
  

Feeding the Paper

• Plotters need to take in paper to print on. You can use a number of devices to make the paper move toward the plotter plane by repurposing the wheels attached to a remote controlled car motor or an old cassette player you don't use anymore.