Wow, that digital sundial is very impressive, and does look like it works on the same principle. Building a larger digital display does seem like it could solve most of the problems of making your own symbols... get a bunch of surplus magnifiers, mount them in a frame, and drill a million holes in an opaque sheet with a CNC machine to make the pixel mask. The SD-11 has is a 30x30 matrix, which would mean finding 900 identical lenses somewhere to build something of the same resolution. Time to take up acrylic casting?
On Friday, January 19, 2018 at 8:23:25 AM UTC-5, redrok wrote: > > > Hi Anubis; > > The operation is very related to the "Digital Sundials" > <http://redrok.com/neat.htm#sundials>. > I have one of the "Digital Sundials International" > <http://www.digitalsundial.com/> dials. > It works very well. Of course it reads in local "Solar" time. > > I think the SD-11 works in a similar way.The sundial has a front surface > with vertical > line and a similar shadow mask with lines and missing lines that form the > numbers. > The sundial is unaffected by the vertical position of the sun, only to the > east/west motion. > > East lamp in the SD-11 has a 2 dimension mask of primary holes. One hole > for each pixel > in the screen. Then a shadow mask with a hole positioned for each lamp to > form the characters. > > I wrote a program. years ago, to make the sundial in large size. Something > I could actually make. > I suspect making a large display similar to the SD-11 would be much easier > to do. > Possibly done with a PC board lithographic camera controlled with Gerber > codes. > > I can even see a CNC machine drilling holes in metal sheets. > > redrok > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3577ea70-9daa-4f46-84af-e1406779fe78%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
