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HHM and Light drawings
Images made by programmable drawing machines
The HHM machine history is described on the drawing machine page. It relies on a specific linkage between X and Y axes which has the effect of increasing the swing of the pen arm. It now has sun and planet drives on the X and Y axes and the precise ratio between them is governed by a differential placed between the two outputs. This allows a very close ratio which controls the line to line progression with great accuracy.
As in all machines the elimination of backlash is crucial and the HHM machine can sustain a 0.5mm line placed 0.5 mm distance away from the previous one with no line deviation. Coupled with a pen lift device it explores images on the edge of chaos.
Light drawings rely on a variety of light pens with colour changers being moved by a programmed NSEW plotter or a turntable. The results are recorded into a digital camera.
One of the First HHM images similar to Henry's
Current images showing the increased complexity and pen lift effects.
Three light images showing some of the variations, further images may be seen in Light Folio
CLICK ON ANY LIGHT DRAWING TO SEE MORE IMAGES IN LIGHT FOLIO