Ring lights that surround the lens are generally used for macro photography – they’re not cheap, but they’re one of the few ways to get shadowless photos. This fiber optic flash diffuser is based on the same ideas of this one. Rather than use a few large optic strands, [Joris] is using many, many more to decrease shadows as much as possible. His previous efforts are even more interesting. He built a LED version – with serial connected LEDs and a step up switching power supply to drive them. Then he moved on to cold cathode fluorescent before moving onto the fiber optics.
LED Hacks1937 Articles
Fnordlicht: RGB Mixing LED Light
While [Will] goes and hides in his offshore datashelter, Hack-A-Day is happy to welcome back our veteran foreign correspondent [fbz]. She promises future posts will have far less ‘German by example’. -[Eliot]
The Fnordlicht is a color mixing LED platform with free hardware schematics and open source firmware initially started by [fd0]. The system is dynamically controllable (via RS-485) and can also work as a standalone with pre-loaded color mixing. I have one of these soldered up and working at home; the circuits come in a stack of three boards with an optional serial level shifter board add-on. There are project pages in German about the Fnordlicht as well, which include some photos of the first prototype. Full kits (“Fnordlicht Bausatz” means “Fnordlicht kit”) and printed circuit boards (“Fnordlicht Platinensatz ohne Bauteile” means “Fnordlicht circuit board set without parts”) can be purchased from their shop, but be sure to ask them first about shipping prices to your location. I love this project, I fire it up and stick it in a corner of my hack room to add some color-changing atmosphere.
A while ago [Eliot] covered the MoMolight, a color changing led project controlled by the colors playing on your monitor.
Thinkpad Style Keyboard Light
[Sprite_tm] keeps coming up with nice work. This time he sent in his thinkpad style keyboard LED lighting solution for his toughbook. I know, you’re thinking… ‘it’s a LED…’ He used an ATtiny13 to monitor the caps lock LED. If it’s operated two times in succession, the LED is turned on and off. Nice, clean and effective.
[By the way, Part 2 of my diy projector how-to is up on engadget. Look for part 3 later Tuesday.]
MIT Disco LED Dance Floor
Sure you know that Disco Stu from the simpsons has got all the moves, but what if you don’t and want to kick it like travolta? then there’s only one option: head up to MIT and check out their LED Disco Dance Floor. This thing is comprimised of 1,536 LEDs made by 20,000 hand soldered connections. that’s a lot of work. it can produce 4,096 colors, can be controlled through XMMS, handles 30fps, and the best part is that it’s 128 square feet. Yes. It’s a very impressive dance floor that has insane capability. there is a log kept which is very detailed and explains the process and how it became a technical nightmare. they made custom PCB controllers to use it and soldered day and night to complete it for a dance they were having. in the end it was pulled off and quite successfully. they also have an “epilogue” telling what changes they made after the dance to improve it. that’s MIT for ya.
thanks to everyone who sent this in.
Led Video Cube Project
this is the hotness, over 1,000 leds make a 3d cube which shows severely low-res video.
this project is an exercise in representing the real world with leds arranged in a cube. using video as the input, the computer takes the image, reconstructs the data and displays it in the cube.
i’m going to drop them a note and see if i get a how-to cooking, this could actually make tv watchable again.
