Records from laser cut wood

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We’ve seen previously how to 3D-print records, but this time the technique is using another tool commonly found in hackerspaces, a laser cutter.

Amanda Ghassaei tried it by engraving Radiohead’s Idiotheque into a disc of wood, and also provided the tools to transform MP3 files into PDF to engrave your own tunes.

It would be interesting to investigate several other materials to achieve a quality of sound close to a vinyl record. Anyway, the achievement is awesome !

Source: Adafruit.

Setting up for #NAMM

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We are in Anaheim, for the NAMM Show 2013 !

The two days before public opening, we installed the Eiosis booth, prepared the demo sessions and fixed a few last-minute bugs on AirEQ, our lead product, to make it behave correctly, as it will be tortured by visitors coming to try it live on the two iMacs we have on the booth.

I spotted some cool spots, but since everyone (including us) is getting their booth ready, it’s more like piles of junk everywhere, but I can’t wait to see it all prep’d up :)

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Check out the photos on Flickr, and stay tuned for more sneaking 😉

Layout design for NPO capacitors

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Some NPO (Non-POlarized) capacitors may have a stripe on their package. Since this can’t be a polarization indication, you might wonder what it means.

A capacitor is made of two conductive elements separated by a non conductive element. In cylindric capacitors (both radial and axial), there is a central core for one conductive element, and an outer shell that makes the second, with some non-conductive substrate in the middle.

The mark on an NPO point to the outer shell. This can be interesting if you need an end of your cap to be grounded. Grounding the outer shell provides isolation from EMI and prevents noise getting in the capacitor.

Check out the layout design tips and tricks that can take advantage of this.

Source: Hack a Day.