LED Lighting, Entrepreneurship, and Art
This algorithm demonstrates a new beat detection algorithm and DMX functionality for the TeensyLED control board to do computer-free sound responsive light shows A circuithub design is available under the CERN open hardware license, allowing you to copy, modify and distribute the design (and products manufactured therefrom), licensed under identical terms & maintaining all copyrights.…
I put together a general purpose firmware that lets you define specific LED sources as CIE-LUV coordinates, and then abstracts it away so that you can use hue, saturation, and intensity with optimal selection and mixing of the available sources to get the desired CIE-LCH value (hue based instead of coordinate based). You define a LED source like this: CIELED white(0.202531646, 0.469936709,…
This demonstration uses a prototype seven color LEDEngin LZ7 LED with red, amber, green, cyan, blue, violet, and white LED dies for illuminating artwork, along with a Fraen FXCM-7-H specialty color mixing optic. I am considering it for replacement of my old Ultraluminous Illuminator , a specialty LED light intended for use with artwork. In this demo, violet is disabled, so blacklight effects are…
This was a fun project. I got a sample of the new LEDEngin LZ7 LED, which has on a single chip red, amber, green, cyan, blue, violet, and white. While I already have a great algorithm for converting HSI to RGBW, this is a much more complex challenge – converting from HSI to RAGCBVW. The constraint I used is that the color must use only 2 individual LED wavelengths, plus white for saturation…
Just got finished with a new prototype! Looking pretty good so far. Verified that this baby can respond to just 100ns pulse widths, and works well with the new ARM processor using the Teensy 3.1 as a module! Need still to test the isolated DMX interface, but the isolated voltages look good, so here’s hoping! Board Design and some Code: https://github.com/saikoLED/TeensyLED Video of the new driver!
This week I learned about a really neat trick to speed up current sinks built out of BJTs. There is an issue with getting them to turn on and off really fast, which is that if the impedance to the driver is too high impedance, it has a very long turn on time. In comes something called RCTL logic – Resistor-Capacitor-Transistor. The concept is actually surprisingly simple, instead of using just a…
Here’s a report on using the Teensy 3.1 . Consider it an enthusiastic 5 star review. First, a video showing what I got running in 2.2 hours. First, the ask for help – if anyone has personally gotten a teensy 3.1 to receive DMX, please send me a note, I’d love some help. I’ve found some web forums but if someone’s already done it I’d love about any trouble you had…
These are some pretty neat effects made by 李和和’s traditional chinese papercuts on top of the SaikoLED 40W illumination table. Let us know if it gives you any ideas!
The Q: World's First Smart Home Audio and Lighting Platform : This is an extremely cool project that SaikoLED has been advising on, the first wirelessly controllable system that lets you control 3 RGBW LED light bulbs while also using the same system to control your music. It’s really a fantastic design, and for way less than I could have possibly imagined. Router runs openwrt, so easily hackable,…
For those of you who have worked with LED star boards, you’re probably very familiar with things that look like this. No matter how careful and clean you are, it’s time consuming and super messy. This isn’t even as bad as it could be, for that setup four of the pads are connected together! For this post, I’m going to show you how to turn that wire ratsnest into this…
Bringing in the new year with some fantastic art in the Hynes Convention Center! SaikoLED Hallucinator Box Awesome Audio-Visual Display, Projection Mapping, SaikoLED Box Amazing electricity ball and color changing paintings/sculptures Tensor!
We’re working on a project to extend our project to use the mbed platform based on ARM. Details are here . Video explanation! Give it a +1 on google plus if you think it’s cool enough to support =)
Here’s a talk I gave for @party over at MIT in the summer. In it I discuss moving from a wavelength definition of color to the color wheel to colorspaces, as well as reproducing colors accurately with RGBW LEDs. Link to the slides.
Been working on a nice little project for making driving high power LEDs more convenient. This is actually a linear driver that allows extremely high PWM frequencies, and is much cheaper than a switching system. I’ll be using this set of five to build new display tables and optical illusion generating boxes for Brickbottom Open Studios November 23rd and 24th. Come and check them out!…
This is a pretty neat new project, which provides 7 channels and integrates LEDs with optical filters in order to produce user-specified digitized versions of arbitrary spectra. For instance, if you use 25nm band filters from 460nm - 635nm in 25nm intervals, you could produce an approximation to just about any spectrum centered in the visible. It is possible to make a larger number of channels, of…
I know it’s not quite on topic, but I like fire almost as much as I like colored lights. And maybe even more when it comes to the sound it makes =) Sorry about the ad, it matched some song I’ve never heard of and I don’t have the wherewithal to get rid of the song it’s complaining about. If anyone knows how to not remove, but distort audio to be unrecognizable send me a…
A good friend of mine helped make this. It’s pretty sweet!
There are a lot of tools out there that allow you to design circuit boards, but anyone who has been doing engineering for a while has encountered the problem of integrating mechanical and electrical design. If you don’t design your mechanical system until your circuit board is done, it’s likely to be expensive and make no sense. If you design the mechanical system before the circuit…
This video shows our next iteration for a super high power LED spotlight. This single LEDEngin LZC style RGBW LED (12W per channel, 48W total) is being driven by the eldoLED POWERdrive DMX RDM enabled power supply on a custom heat sink. The lens is the LEDEngin LLNS-3T08-H 13 degree half angle color mixing total internal reflection lens. Color fade through RGBW More methodical test showing direct…