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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!weretis.net!feeder8.news.weretis.net!reader5.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Jan Panteltje Newsgroups: sci.electronics.design Subject: Re: hobby electronics Date: Fri, 05 Jul 2024 15:14:01 GMT Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; ISO-8859-15 Content-Transfer-Encoding: 8bit Injection-Date: Fri, 5 Jul 2024 15:14:02 -0000 (UTC) Injection-Info: solani.org; logging-data="242232"; mail-complaints-to="abuse@news.solani.org" User-Agent: NewsFleX-1.5.7.5 (Linux-5.15.32-v7l+) Cancel-Lock: sha1:cQbaD034HD6c0ye6VezMCBZ5Fvw= X-Newsreader-location: NewsFleX-1.5.7.5 (c) 'LIGHTSPEED' off line news reader for the Linux platform NewsFleX homepage: http://www.panteltje.nl/panteltje/newsflex/ and ftp download ftp://sunsite.unc.edu/pub/linux/system/news/readers/ X-User-ID: eJwFwYEBwDAEBMCVKP8YJ1L2HyF3MCpvOEHHYjtl25waEe0rlL9Rm5iyGkCUMzwpdGUq6vac+EyAViMfN6cUUQ== Bytes: 4276 Lines: 58 On a sunny day (Fri, 5 Jul 2024 08:46:26 -0500) it happened BillGill wrote in : >I have a large paper library. I am also getting old. >I may have to go into some sort of assisted living >when I can't go on living by myself. When I do I will >not be able to take my library with me. So I have >been building a digital library. Most books that I have >are available in digital format. But I realized that many >of the older books are not available. They are mainly fiction, >mysteries, SF, even a few romances. And mostly from >the time when books were mostly a one time event. A >few old time authors, such as Agatha Christie, are still >in print and available as print or digital, but many >are not. So I decided to digitize those books for myself. >While most of them are in copyright, I have no idea how >to get permission. I suspect that is why many of them are >not in digital format. So I have been digitizing them for >my own use. I will not distribute them in any way. They >are strictly for my own use. If any of them show up in >digital format I will buy that edition. > >So I have been doing non-destructive scanning. This is a >rather long process, since I am creating epub formatted books >epub is a format based on HTML so that it can be automatically >reformatted to fit on any screen. But that means extra >work. It takes anyplace for 3 days to a week, depending on >the size and quality of the book. First I scan it using >my DIY scanner. This involves taking a photo of each page, >then converting the photos to text, using Optical Character >Recognition (OCR) software. After that is the slow part. >I insert the text into a word processor and proof it to >correct all the many errors the OCR makes in the process. >How many errors depends partly on the quality of the source. >Then it is fairly simple to convert it to the epub format, >or into the AZW3 format that can be read by kindle. > >Bill I just take pictures of the pages, and then make a pfd that holds the pictures. Works fast with my canon camera on a tripod. Takes care of any pictures in the book too. convert "*.JPG" -quality 100 outfile.pdf convert' is part of ImageMagic, to allow pdf output: In /etc/ImageMagick-6/policy.xml change 'none' to 'read|write" to enable pdf output: There are many readers for pdf format, you can select size too. I use xpdf in Linux, pdf in firefox browser works too, ctrl + and ctrl- to enlarge or make it smaller. Especially nice is using it for the microscopic small (one inch or so) 'manuals' like for my watch or other electronic stuff. All goes to a 4 TB harddisk these days. Linux 'locate' will find it in a second. Few month ago did make a pdf from about 500 pages of A4 size circuit diagrams I wrote in the past that way. All on a Raspberry Pi4 8GB.. Same one I am posting this from.