cimo Posted September 10, 2011 Report Share Posted September 10, 2011 (edited) You thought you got rid of me! Not so easy boys... So today I woke up and decided I want to drive 1000 1W bright leds, what do you think ? It would be digital On/Off triggering and my software platform of choice would be http://vvvv.org . Seems like a huge task, and I d probably go for some already built hardware driver, any idea? How do you see otherwise the idea of building a 1000 digital outputs with MIDIBox ? Anybody tried something similar? So how s everybody doing ? Cheers from Tenerife! Simone Edited September 10, 2011 by cimo Quote Link to comment Share on other sites More sharing options...
bilderbuchi Posted September 10, 2011 Report Share Posted September 10, 2011 buy a LED wall? :rolleyes: :thumbsup: btw, you missed a "v" in the URL... Quote Link to comment Share on other sites More sharing options...
cimo Posted September 10, 2011 Author Report Share Posted September 10, 2011 buy a LED wall? :rolleyes: :thumbsup: btw, you missed a "v" in the URL... fixed.. no led walls, the leds will placed in plastic cans.. Quote Link to comment Share on other sites More sharing options...
TK. Posted September 10, 2011 Report Share Posted September 10, 2011 Hi Cimo! :) Software-wise it wouldn't be so much effort to program a small application which allows to control 16 8x8 LED matrices (=1024 LEDs) which can be controlled via MIDI, USB-MIDI, OSC (I can program a quicky app if you want) But for 1W LEDs you will need source, but also sink drivers, otherwise the 74HC595 will be overloaded. And you will need a strong PSU! ;) Best Regards, Thorsten. Quote Link to comment Share on other sites More sharing options...
cimo Posted September 11, 2011 Author Report Share Posted September 11, 2011 Hola Jefe! tx for the offer, at the moment what "worries" me is what s the best solution for the final stage hardware wise, 1000 2W drivers is a lot of components.. I would probably go for some already built hardware if the price is reasonable.. it s not a problem for 16x 8x8 led matrices but it could be for the final stage.. dunno.. Simone Quote Link to comment Share on other sites More sharing options...
bilderbuchi Posted September 12, 2011 Report Share Posted September 12, 2011 (edited) I meant hacking a LED wall controller or LED wall itself (and put the leds themselves wherever you want them), then hardware and power, communication requirements probably would mostly be satisfied. Edited September 12, 2011 by bilderbuchi Quote Link to comment Share on other sites More sharing options...
dstar Posted September 12, 2011 Report Share Posted September 12, 2011 The best idea is, you build single LED Driver boards with pwm or dmx chip... look WS2801, TM1804 or similar. You can control this with a lot cheap china-hardware and flash/video grabbing. Quote Link to comment Share on other sites More sharing options...
cimo Posted October 10, 2011 Author Report Share Posted October 10, 2011 Hi so I think that if the projects gets funded i ll use MIDIBox platform linked to vvvv with OSC/MIDI, I ve reduced the number of total outputs (for mental sanity purposes) to 352, each will drive a final stage of 48v at 20W, I know that makes a total of 147 Amperes, I am planning to buy half a dozen of Power supplies so that I can split the lines evenly. Lights: I d go for Halogen 12v light (group of 4 serially connected) but that fraction of second it takes to get to full brightness and back to off is a serious bummer, LEDs would be better but I need something that can spread the light rather evenly around. For the final stage I am probably going to re-use an already working system I used a couple of years ago: 2n3055 and a basic transistor to trigger the final stage. Is it possible to use a matrix system for the final stage too, or am I supposed to use one stage for each output? About modulating the power of the output will I be able to do it with PWM avoiding using Analog OutPuts? tx Simone Quote Link to comment Share on other sites More sharing options...
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