Animated holiday wreath from a string of LED lights

animated-holiday-wreath

[Dennis Adams'] wreath lights project looks pretty good. But he did some amazing coding to produce a whole set of interesting animated patterns that really seal the deal for the project. Don’t miss the video after the break where he shows off all of his hard work.

He started with a string individually addressable LEDs. These are the 12mm variety like what Adafruit sells (we’ve seen them popping up in a number of projects). To mount each pixel he tried a several different prototypes before settling on a ring that was 14″ in diameter. The design was laser cut from acrylic, with sets of staggered holes to host each ring of LEDs. The final touch was to add ping-pong balls to diffuse the light.

As we mentioned earlier, the light patterns really add the finishing touch to the project, but there is more functionality there too. [Dennis] rolled in the ability to monitor a Twitter feed with the wreath. When he gets a new tweet, a different animation will let him know about it.

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Manuel the Scottish moose speaks your tweets

tod1

The folks over at Torchbox needed a Christmas card this year. Previously, the most poplar holiday card was a web page that gave their visitors a chance to activate a ‘snow machine’ and spray confetti on a random employee, all while being streamed online. They wanted to replicate this bridge between virtual and real life interactions this year, and Manuel the talking moose was born.

Manuel needed a personality and interaction from random people on the Internet so the Torchbox team decided to make the fake moose head speak tweets in real-time with the help of a Raspberry Pi. The code running on the Raspi gets tweets with a #tbxmoose hashtag, sends that through a node.js script, and finally sent to the Festival speech synthesis system.

A few modifications needed to be done to Manuel before he was presented to the Internet. His jaw was chopped in half and a servo and animatronic controller were added for a proper presentation on Torchbox’s stream of Manuel’s random musings.

Twitter radio

twitter-radio

This anthropomorphized wood bowl will read Tweets out loud. It was built by [William Lindmeier] as part of his graduate work in the Interactive Telecommunications Program (ITP) at New York University. View the clip after the break to see and hear a list from his Twitter feed read in rather pleasant text-to-speech voices.

The electronics involved are rather convoluted. Inside the upturned bowl you’ll find both an Arduino and a Raspberry Pi. But that’s not the only thing that goes into this. The best sounding text-to-speech program [William] could find was for OSX, so there is a remote computer involved as well. But we think what makes this special is the concept and execution, not the level of hardware inefficiency.

The knob to the left sets the volume and is also responsible for powering down the device. The knob of the right lets you select from various Twitter lists. Each turn of the knob is responded to with a different LED color in the nose and a spoken menu label. You can get a quick overview of the project from this summary post.

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Tuitwall uses PHP-fed Arduino to display tweets

[Santiago] recently completed this project which he calls Tuitwall. It will display your Twitter feed on an LED matrix. The method he used to put it together will come in handy for any project where you need to scrape information from the Internet.

The project does require a server in addition to the Arduino hardware seen above. On the Arduino side [Santiago] uses an Ethernet shield and an LED matrix which is addressed via SPI. The server is running a PHP script which takes advantage of the twitteroauth library to handle authentication.

There’s a little bit of configuration to be done, most of it having to do with how Twitter handles 3rd party applications. But once everything is set up you can take the hardware with you and plug it into any network (as long as it offers DHCP). With this framework as a guide it’s a snap to bend it to your will. It could be used as an RSS reader, time and temperature, server farm status, a prank ticket displaying fake headlines, etc.

Scrolling tweets with a WiFi LED matrix

For his most ambitious build to date, [Param] thought it would be a cool idea to have a LED matrix display spitting tweets out via a WiFi connection. The build is now done, and we’ve got to hand it to him for a very nice build.

The build is based on an Arduino with a Sparkfun WiFi shield providing the network connection. The Arduino pings a Javascript app that pulls down tweets from The Verge and displays them on an 8×8 LED matrix display.

What makes [Param]‘s build so cool is its portable nature; the entire device is completely wireless, getting its power from a Sparkfun LiPower shield  and an apparently extremely capacious LiPoly battery.

With a rat’s nest of wires hanging out the back of the LED display, [Param]‘s build is crying out for a proper enclosure, but even given that it remains a quality project. You can see a video of the WiFi’d Twitter display after the break.

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Displaying tweets with a laser pointer and speakers

 

This year at Toorcamp, [Rich] will be showing off his laser-based vector display, capable of projecting tweets using only a laser pointer, a pair of mirrors, speakers, and an Arduino. Steady hand and curses from lack of an optical bench not included.

 

[Rich]‘s Instructable goes over the finer points of the build; a Python script runs on his computer fetching all recent tweets with a certain hashtag. These tweets are sent over to a ‘duino where a bit of code translates the text into a scrolling vector display. The code for the project is based on one of [Rich]‘s previous builds to draw shapes with the same speaker/laser setup.

In theory, using a pair of speakers to draw text on a wall isn’t much different from drawing pictures on an oscilloscope. Of course, [Rich] always has the option of turning his LaserTweet into an oscilloscope when Toorcamp is over.

Relevant videos after the break.

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Dot matrix printer spits out any tweet mentioning @KWF

Earlier this month, [Kenneth] picked up an old dot matrix printer at the Silicon Valley Flea Market and subsequently found two cases of tractor feed printer paper. It’s a marriage made in heaven for a dot matrix twitter printer.

[Kenneth] used a BeagleBone - a tiny single board computer running Linux – to connect to the Internet and fetch any new tweets mentioning KWF every minute or so. The BeagleBone spits out these tweets over the USB port which is connected to the ancient printer by means of a cheap adapter cable.

Interestingly, [Kenneth] wrote the code for this project as a shell script. A lot of effort went into scrubbing the input of any escape characters, but he still implores his admirers to not attempt to break his project.

In case you’re wondering, at couple Twitter accounts announced this post’s headline to the Twitterverse when this story was published. This should have immediately sent [Kenneth]‘s printer into motion, recording that harsh mistress that is sending a build log of a Twitter connected device into Hackaday.

After the break you can see [Kenneth]‘s demo. Be sure to share this post on Twitter!