Retrointerfacing

- connecting past and future -

Archive for September, 2008

Relaxed evening viewing film on ceiling

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Ok, I know that there is a wide community building DIY beamers using screens and overhead projectors (or even custom ordered sets of Fresnel lenses).. but that does not prevent me from putting my own together.. in less than 10 minutes (the time it took to remove the top mirror of the overhead – the tft monitor had been disassembled previously)

requirements

Overhead projector, ventilator, 15” tft (with defective backlight or inverter, so completely taken apart), laptop or other VGA source :)

beamer setup beamer working projection

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September 28th, 2008 at 5:19 pm

Posted in DIY,home improvement,imaging

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Interfacing Paper with Phone: reading book on mobile phone

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My phone doesn’t support reading of txt files or pdf. Upgrade to an i-phone would be the most sensible thing to do. However, my phone does have a 320×240 screen, capable of displaying images… How to make something out of that? I found a simple solution on this weblog, converting a text file using Latex into a 1500 page pdf with pages of 320×240 points (pt). Using ImageMagick this pdf can be converted to a directory of images of 1500 jpg’s in readable format. It took some tweeking of font size, but I managed to read a couple of books on the plane to china (phone in airplane-mode). The source of the book was taken from project Gutenberg. Below the used latex source. The commands used were latex book.tex then converting it to .ps using dvips -o book.ps book.dvi. and finally converting it with imageMagick to a dir full of jpg’s using convert -antialias -negate book.ps book%03d.jpg
motorola phone book on screen 

documentclass[10pt]{article}
usepackage[vcentering,dvips]{geometry}
usepackage{helvet}
geometry{papersize={240pt,320pt},total={220pt,300pt}}
begin{document}raggedrightbegin{textsf}begin{LARGE}
The War of the Worlds, by H(erbert) G(eorge) Wells [1898] ….
end{LARGE}end{textsf}end{document}

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September 28th, 2008 at 5:06 pm

Posted in DIY,home improvement,imaging

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RFID hackerscamp @PICNIC08

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couch in mediamatic lounge At the hackerscamp organized by mediamatic I have been working on a mobile massage couch, together with Ralph Meijer and Fabienne ‘fbz’ Serriere. It was an exhausting week full of pizza, cola, junkfood, stabbing needles, programming arduino’s, getting ‘marktplaats’ parts by train, hacking massage mats, soldering LED matrixes, debugging circuits and disentangling wires, so all in all a terrific experience. It is such a good idea to work hard on a project you can truly relax on on the meantime :) . Fbz did the bulk of the needlework, Ralph did the python coding and I did the arduino programming. Especially Ralph had a hard task…

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September 26th, 2008 at 4:56 am

Posted in Arduino,DIY

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