Friday Hack Chat: Visual Synthesis

For this week’s Hack Chat, we’re going to be discussing generating analog video for visual synthesis. What’s on the front porch?

Our guest for this week’s Hack Chat will be Jonas Bers, an audiovisual artist and performer. For their work they used hacked video mixers, a hand-built video synthesizer, and various pieces of restored/modded lab equipment and military surplus devices. Jonas has also developed the CHA/V, the Cheap, Hacky, A/V, an open source, DIY, audiovisual video synthesizer. This video synth has been built by people around the world, and has been the subject of international workshops in fancy art schools. …read more

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The Furby Organ

Sometimes you have an idea that is so brilliant and so crazy that you just have to make it a reality. In 2011, [Look Mum No Computer] drew up plans in his notebook for a Furby organ, an organ comprised of a keyboard and a choir of Furbies. For those who don’t know know what a Furby is, it’s a small, cute, furry robotic toy which speaks Furbish and a large selection of human languages. 40 million were sold during its original production run between 1998 and 2000 and many more since. Life intervened though, and, [LMNK] abandoned the Furby  …read more

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Eight SEGAs Singing

Way back in the dark ages, before the average computer could play back high quality recorded audio, things were done differently. Music and sounds were stored as instructions to be played back on audio synthesis chips, built into the computers and consoles of the 80s and 90s. These chips and their unique voices hold a special nostalgia that’s key to this era, making them popular to experiment with today. To that end, [little-scale] decided to wire up eight chips from the SEGA Master System to please your ears.

The chip in question is the SN76489, which we’ve also noted is …read more

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Anyone Need a Little Fuming Nitric Acid?

If there’s a chemical with a cooler name than “fuming nitric acid,” we can’t think of it. Nearly pure nitric acid is useful stuff, especially if you’re in the business of making rocket fuels and explosives. But the low-end nitric acid commonly available tops out at about 68% pure, so if you want the good stuff, you’ll have to synthesize fuming nitric acid yourself. (And by “good stuff”, we mean be very careful with the resulting product.)

Fuming nitric acid comes in two colors – red fuming nitric acid (RFNA), which is about 90% pure and has some dissolved nitrogen …read more

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