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(showing articles 21 to 23 of 23)
(showing articles 21 to 23 of 23)

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Fresh hacks every day

older | 1 | (Page 2)

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    In bringing suitable illustrations to our articles, we Hackaday scribes use a variety of sources that offer images featuring permissive licences. Among the usual free image libraries there is one particularly rich source, the line drawings contained within the huge archives of patents granted by the various countries around the world. These are the illustrations used as part of the patent itself to describe the working of the patent being claimed. We use them because though the items they depict are legally protected from copying by the patents they are part of, they as part of the patents themselves are …read more


    art-of-patent-featuredjennylistThe beauty in hand-rendered fonts from patent artwork, collected within the book.Toy figure, Lucas Jr et al, US Design Patent D265754.Musical instrument support, [Edward L. Van Halen], US patent US4656917A.Buoyant bulletproof combat uniform, [Nelson J. Waterbury], US Patent US3398406A.art-of-patent-featuredjennylistThe beauty in hand-rendered fonts from patent artwork, collected within the book.Toy figure, Lucas Jr et al, US Design Patent D265754.Musical instrument support, [Edward L. Van Halen], US patent US4656917A.Buoyant bulletproof combat uniform, [Nelson J. Waterbury], US Patent US3398406A.

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    Isaac Asimov described the business of rocket fuel research as “playing footsie with liquids from Hell.” If that piques your interest even a little, even if you do nothing else today, read the first few pages of IGNITION! which is available online for free. I bet you won’t want to stop reading.

    IGNITION! An Informal History of Liquid Rocket Propellants is about how modern liquid rocket fuel came to be. Written by John D. Clark and published in 1972, the title might at first glance make the book sound terribly dry — it’s not. Liquid rocket fuel made modern rocketry …read more


    Ignitiondp2cnkIgnitiondp2cnk

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  • 03/10/18--01:00: Secret Book Light Switch
  • You enter a study and see a lightbulb hanging on the bookshelf. You try all the switches in the room — nothing is turning it on. Remembering you’re in [lonesoulsurfer]’s home, you realize that you’re going to have to start yanking on every book in sight.

    While often associated with the likes of Bat-caves and other complicated hidden passageways, turning a shelved book into a secret switch isn’t complex in its own right. [lonesoulsurfer] is basing their build on one by B.Light Design revolving around a fan switch, some aluminium strips, a block terminal, fishing line, a hinge, and — …read more


    secret-book-switch-f_6iqj8acl0mkv-shot0001_featuredthehacksmithsecret-book-switch-f_6iqj8acl0mkv-shot0001_featuredthehacksmith

older | 1 | (Page 2)