Burning man, the premier desert-based convention, is a vacation for some. [Sam], on the other hand, points out that he is there to get his hands dirty. This year, he (with a team of six) built a set of 20 interactive lotus flowers that light up in sync with a heartbeat.
[Sam]’s biofeedback circuit is able to sense up to two heartbeats per flower. When a person’s heartbeat is detected, a set of high-power LEDs light up from the base of the stem upwards towards the petals for an incredible illuminated display of biofeedback.
The lotus flowers themselves aren’t anything to scoff at, either. They range from 8 to 18 feet high and are made out of steel and rowlux plastic. The circuit boards are all custom-made as well, with every part chosen to be as affordable as possible. The whole installation is powered by a deep-cycle marine battery and a set of 6V batteries, which can run all of the electronics in the flowers for the entire night before needing a recharge.
Burning man is a great example of art meeting technology. For other examples, check out this 2010 pyrotechnic ball, or head there yourself next August! Be sure to check out the videos and the project’s code on the project site as well.
[Rob] created these amazing Bluetooth controlled LED lights for his daughter’s wedding adding a colorful ambient glow to the ceremony. Each item held a Neopixel ring and an Arduino microprocessor with a wireless module that could be individually addressed over a ‘mini-network.’ The main master station would receive commands from a Windows Phone. Usually we see Arduino-based projects being run with Android apps, so it’s nice to see that Microsoft is still present in the maker community.
The enclosures and translucent vases that sit atop the devices were 3D printed. All eight of the matrimonial units synchronized with each other, and the colors could be changed by sliding the settings bar on the app. [Rob] says that it was a lot of fun to build, and jokingly stated that it kept him “out of all the less important aspects of the ceremony. (food choice, decor, venue, who to marry etc etc).” The outcome was a beautiful arrangement of tabletop lighting for the wedding. A demo of [Rob]’s setup can be seen in the video below.
Continue reading “Arduino-based LED Wedding Lights”
Looking for a fun and easy way to add a bit more interaction to your LED-laden projects? Why not turn them into proximity sensing LEDs?
Our hacker, [Will], is just getting into designing his own PCBs. He was looking for a simple project to try out that wouldn’t be too hard to design and manufacture a PCB for, so he came up with this clever little interactive LED array.
It’s actually a very simple circuit which also makes it super easy to build on a prototyping breadboard. Each proximity sensing LED is made up of five components. Three resistors, an LED, an IR LED, and a photo transistor. The IR LED is chosen specifically for the type of photo transistor being used — in this case, it emits a wavelength of 880nm, which is the type of light the photo transistor recognizes.
These components are wired in a manner that the IR LEDs are always on. The normal LED is wired in series with the photo transistor, and thus the LED only turns on when the photo transistor sees reflected 880nm light bounced back at it by whatever object you wave over top.
What would be really cool is if you added some 555 timers to the mix and had a delay before the LEDs fade away — then you could have a huge array that leaves motion trails long after you’ve triggered the sensors!
[via Dangerous Prototypes]
[risknc] and [mpinner] have been working on a couple of LED light staff designs for a while now and have come up with a prototype that can light up the night with an array of streaming colors. There is even a dial that can turn up and down the brightness.
Originally, [risknc] began developing his own project at SpaceX and dove further into the idea right before Burning Man. The visual effects, when twirled through the air, produced an extremely bright flow of energy that can be seen circling around the user.
The 8ft long carbon fiber staff was stuffed to the edges with RGB LEDs. Neopixel strips at 60 LED per meter were used to alternate between colors, and a whole bunch of white capable LEDs were embedded into the staff as well. One of early designs was purposefully left at a local hackerspace called Crashspace in Culver City, California. Photos of community members trying it out surfaced on the hackerspace’s website. In addition, a description of the staff and a few high-quality photos of the ‘Sparkle Stick’ were uploaded on to the Suprmasv projects page. Searching through the pictures reveal an instance that shows the LED light staff being used during a flow session with a fire poi spinner in the background. Perhaps there is a way to combine LEDs and fire? Anyways, a later version of the staff was tested out at the 2014 Maker Faire in San Francisco.
Full specs and logs of the project can be found on Hackaday.io. A quick video of [mpinner]’s light staff being spun around comes up after the break. In the video, it looks like they are testing it out outside of Crashspace as they run through the darkness of the alleyway in the back, lighting up the area with a nice LED glow. Plans for the future include building a bunch of them and wirelessly syncing them up. CAD models will be uploaded soon as well.
Continue reading “LED Light Staffs for the Ultimate Portable Rave”
Sometimes, it’s the simple things that mesmerize. [JohnS_AZ] has created a simple dekatron style LED ring, but we can’t seem to stop watching his video. [John’s] LED ring began as a visual indicator for his Hackaday Prize entry, a water consumption display. Judging by his website, [John] is a bit of a display nut. Nixie tubes and huge clocks feature prominently.
We’ve seen plenty of LED projects using the trusty 74xx595 8-bit shift register. [John] personally isn’t a fan, as the entire chip is only rated to drive about 50mA. While hackers routinely push the chip several times past this limit, [John] found a chip designed for the task in the Texas Instruments TLC59282 16 channel constant current LED driver. (PDF link) While more expensive than the ‘595, the 59282 makes life much easier. Only one resistor is needed at the chip’s current sense pin, rather than a current-limiting resistor for each LED. The 59282 also provides a blank input, which is perfect for driving with PWM.
[John] designed a simple PCB with a the 59282 driving a ring of 16 LEDs. While he waited for the boards to come in, he wrote some test code for a Microchip PIC16F1509. [John’s] code is not optimized, but that makes it easy to see exactly which bit patterns he’s writing to the LEDs. It all makes for a great demo, and reminds us of those old Dekatron tubes.
It’s the demo video that makes this project. Click past the break and give it a watch. After several long days of judging entries, a really nice LED ring might be just what the doctor ordered.
Continue reading “LED Water Wheel Display Is Dekatron-tastic!”
[Saurabh] wanted a quick project to demonstrate how easy it can be to build devices that are voice controlled. His latest Instructable does just that using an Arduino and Visual Basic .Net.
[Saurabh] decided to build a voice controlled lamp. He knew he wanted it to change colors as well as be energy-efficient. It also had to be easy to control. The obvious choice was to use an RGB LED. The LED on its own wouldn’t be very interesting. He needed something to diffuse the light, like a lampshade. [Saurabh] decided to start with an empty glass jar. He filled the jar with gel wax, which provides a nice surface to diffuse the light.
The RGB LED was mounted underneath the jar’s screw-on cover. [Saurabh] soldered a 220 ohm current limiting resistor to each of the three anodes of the LED. A hole was drilled in the cap so he’d have a place to run the wires. The LED was then hooked up to an Arduino Leonardo.
The Arduino sketch has several built-in functions to set all of the colors, and also fade. [Saurabh] then wrote a control interface using Visual Basic .Net. The interface allows you to directly manipulate the lamp, but it also has built-in voice recognition functionality. This allows [Saurabh] to use his voice to change the color of the lamp, turn it off, or initiate a fading routing. You can watch a video demonstration of the voice controls below. Continue reading “Voice Controlled RGB LED Lamp”
It’s not hard to get HaD’s attention when you cram 1000’s of RGB LEDs into a single project. In fact, this funky crystal pipe has over 9000 of them!
The rather unique project was privately commissioned to cover up an exposed pipe in a new building. It seems like a bit of overkill to us, but the engineers at Asylum were more than excited to deliver. The pipe covering features 2,912 control modules for the RGB LEDs and are controlled by a dedicated Linux PC built into the installment. A website was created to allow the client to control the lights from any computer or mobile device.
Each crystal shard was individually glued to the surface (there’s around 3000 of them!) using UV hardening glue. It was a painstakingly slow process, but well worth the result as it looks like it’s out of Superman’s Fortress of Solitude!
Continue reading “World’s Most Expensive Industrial Pipe Cover”