This Polaroid Camera Prints on Receipt Paper

These days, shooting on film is expensive, and it continues to get more expensive. If you use an instant camera, like Polaroid it costs a lot to snap pics. $19 for just eight shots was too much for Tim Alex Jacobs, so he hacked an old Polaroid camera to print out images on cheap thermal paper, the same kind that is used in cash registers to print out your receipt. This makes the instant camera much cheaper to use.

To pull off the feat, Alex bought an old, broken Polaroid, along with an old webcam, and a cheap thermal printer that was small enough to fit inside the camera’s housing after he removed the old guts of the Polaroid. He used a Raspberry Pi to control all of the hardware. It also took lots of custom coding and troubleshooting to get the webcam and thermal printer to communicate.

After all of that, there wasn’t enough space in the camera to fit an entire roll of thermal paper, but he got enough in there to get a few shots between reloads. If you want to try this for yourself, the details of the build are on Jacobs’ site, but you’ll need some skills. This is more than a novice project.

[via Gizmodo via Boing Boing]

Microsoft Research uses AI to help drones soar like eagles

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Pelty Bluetooth Speaker Runs on the Power of Candlelight

A candlelit dinner is can certainly be romantic. A candlelit dinner with fine music would be even better. The latter is what you’ll get with the Pelty bluetooth speaker.

Pelty 620x372magnify

It’s an unusually designed speaker that runs not on batteries or an AC plug, but on thermal energy provided by the candle that’s burning in it. It’s made possible because of the built-in thermo-electric generator, which uses the difference in heat provided by the two different metals that’s in it to generate the electric current.

The entire thing is made from ceramic materials, so you don’t have to worry about the speaker catching fire in the middle of your favorite song.

Pelty is currently up for funding on Indiegogo, where a minimum pledge of $229(USD) will get you one of your very own.

[via Damn Geeky]

Scientists use nanotechnology to harvest electricity from temperature fluctuations

Scientists use nanotechnology to harvest electricity from temperature fluctuations

So far your footsteps, breath and nervous energy have all been tapped to charge up batteries, and now researchers from the Georgia Institute of Technology scientists have pulled it off using thermal changes. They did it with so-called pyroelectric nanogenerators, which use polarization changes to harvest heat energy from temperature fluctuations. Normally output current is too low for commercial electronics, but by making one with lead zirconate titanate (PZT), the team was able to create a device that could charge a Li-ion coin battery to power a green LED for a few seconds. The researchers predict that by doubling the surface area, they could drive wireless sensors or LCDs using only environmental temperature changes from an engine or water pipe, for instance. The result could be green power, but without all that pesky moving around.

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Via: Phys Org

Source: Nano Letters