18 Jan '15, 12pm

Circuit Plotting With An HP Plotter

Circuit Plotting With An HP Plotter

Over the last few years we’ve seen a few commercial products that aim to put an entire PCB fab line on a desktop. As audacious as that sounds, there were a few booths showing off just that at CES last week , with one getting a $50k check from some blog. [Connor] and [Feiran] decided to do the hacker version of a PCB printer : an old HP plotter converted to modern hardware with a web interface with a conductive ink pen. The plotter in question is a 1983 HP HIPLOT DMP-29 that was, like all old HP gear, a masterpiece of science and engineering. These electronics were discarded (preserved may be a better word) and replaced with modern hardware. The old servo motors ran at about 1.5A each, and a standard H-Bridge chip and beefy lab power supply these motors were the only part of the original plotter that were reused. For accurate positioning, a few 10-turn pots were duct taped ...

Full article: http://hackaday.com/2015/01/18/circuit-plotting-with-an-h...

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Simple DIY Pen Plotter, Great First CNC Project

Simple DIY Pen Plotter, Great First CNC Project

hackaday.com 17 Jan '15, 3am

[Morten] has been busy recently making a pen plotter . It is a simple and elegant build that he completely designed from t...