Wired has a great feature on grad student Daniel Reetz $300 homebrew book-scanner (David linked to the Instructable for it in April
). The device uses a couple of digital cameras, some acrylic and some wood to scan a 400 page book in 20 minutes, converting the scans to text with free software.
DIY Book Scanners Turn Your Books Into Bytes
So over three days, and for about $300, he lashed together two lights, two Canon Powershot A590 cameras, a few pieces of acrylic and some chunks of wood to create a book scanner that's fast enough to scan a 400-page book in about 20 minutes. To use it, he simply loads in a book and presses a button, then turns the page and presses the button again. Each press of the button captures two pages, and when he's done, software on Reetz's computer converts the book into a PDF file. The Reetz DIY book scanner isn't automated-you still need to stand by it to turn the pages. But it's fast and inexpensive.
"The hardware is ridiculously simple as long as you are not demanding archival quality," he says. "A dumpster full of building materials, really cheap cameras and outrageous textbook prices was all I needed to do it."
This handheld magnifying glass has two bright LEDs and is powered by 3 AAA cells (not included). The manufacturer says the magnification is 40X. I think it is less than that, but it is still plenty powerful for my needs – mainly, reading the markings on tiny electrical components and checking the layer fusion on […]
The European Commission is probing whether Samsung televisions’ sensed when they were being tested for energy efficiency and changed their power consumption to get better ratings than they deserved.
The curved bottom of the cup peeks through your drink as the level drops down, moving the “moon” from full to a fingernail-paring sliver. Of course, it works better if you drink something cloudy and white — it’s designed some cloudy Korean rice-wines, but would also work with Pernod and water, I’m thinking.
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