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zayıf insanlar istediiklerini yapamayan hayatına yön verebilecek kadar güçleri olmayan bok çuvalından farkları yok gözümde gidip onlara aşık olan ben se o bok kamyonu gibiyim. bu kadar cesaretsiz güçsüz nasıl yaşıyorsun sevgilim.. belki de yaşamıyorsun izliyorsun ..

Robotic tentacles for a disturbing haunted house

Hackaday

testicles

[ivorjawa] is putting on a haunted house this Halloween that we really don’t want to go to. His robot tentacle is already supremely creepy, and we’re assuming it will only be more frightening once it’s covered in fabric and foam rubber.

Each tentacle can move on two axes thanks to four steel cables running through this strange Geiger-esque contraption. In the base of the tentacle are two stepper-motor driven cylinders that take up slack on one cable and draw out another cable. Two of these control boxes, driven by a stepper motor and an Arduino motor shield, allow the tentacle to reach out and grab in any direction. You can check out the mechanics of the build on [ivorjava]’s flickr

On a semi-related note, even though we’re more than a month out from Halloween, we should have more Halloween builds in our tip line by now. If you’re working on…

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Quartz with a Fiery Heart

The Dancing Rest

“Looking like a doorway into another dimension, this wonderful crystal of quartz held a secret within. The dark orange brown agate in the centre is surrounded by haloes of iron oxide minerals, probably haematite, and displays the iridescent 3d optical effect known as fire agate.” Loz

Image credit: Fender Minerals

Fire Agate

“Coloured a deep chocolate brown and displaying a dazzling iridescent effect somewhat similar to ammolite or opal, fire agates are one of the rarest forms of microcrystalline silica. The colours, that change when the stone is rotated under a light source are due to a phenomenon called thin film interference, something you all see in the sheen of petrol puddles on water.

The layers are composed of alternating agate and iron oxide, and usually occur in this slightly bulgy shape known to mineralogists as botryoidal. They each reflect the light differently, creating waves of interference whose colour depends…

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