Posts tagged ‘Plotter’

Building a Single Pixel Scanner

A flat bed scanner typically uses three rows of CCD sensors (RGB) to capture images placed directly on top of the glass bed. When the CCD array scans from one end of the image to the other, the digitized color image is formed. So with a similar approach, we could use just one photosensitive device to capture the entire image one pixel at a time via raster scanning. Now that I have an HP 7044A X-Y recorder I could use it’s X/Y servo mechanism with a suitable sensor to build a single pixel scanner. Continue reading ‘Building a Single Pixel Scanner’ »

HP 7044A X-Y Recorder Teardown, Lorenz Attractor

I picked up an HP 7044A X-Y recorder on eBay recently. This one was made in the early 1980’s and by today’s technology standard it is rather ancient. And because of this, it is very easy to interface with as the input is completely analog. My plan was to do some experiments down the road using the X-Y movements capability of this HP recorder. Continue reading ‘HP 7044A X-Y Recorder Teardown, Lorenz Attractor’ »