Plotter Mark II

The plotter we published roughly two years ago is among our most popular projects thanks to a relatively simple mechanical construction and the availability of an associated stepper motor driver board. Although a number of readers have sent us suggestions for software drivers that would enable the plotter to be used with popular computers, only Mr. Lewetz' contribution proved to meet the requirements as regards use of the driver on IBM PCs, and (at least partial) compatibility with the industry-standard HPGL plotter command language. Before introducing the software, however, we avail ourselves of the opportunity to propose some improvements to the mechanical design of the plotter.