the profile image just showed up, because i registered with http://www.gravatar.com
the leds are for this piece: http://lozano-hemmer.com/voice_array.php
i just saw this, which makes me rethink my use of the maple for this project: http://www.heroicrobotics.com
tlgosser
Member
Are you working for this artist? Or do you mean that you are working on something similar?
That looks like it could be a great out-of-box solution and it would eliminate any 'malfunction anxiety'. If something goes wrong you'd just toss it in the garbage and plug in another one.
Would this interface with your DMX? Their description is confusing. Sounds... unique.
Thanks for tip about the avatar.
tlgosser
Member
I see, you engineer for Rafael Lozano-Hemmer. I used to to do similar work in the 90's. I worked for Bob Bielecki - he's the guy who engineered (and, ahem, often proposed) Laurie Anderson's technology art. And I was Roxy Paine's engineer for a while. It was all PIC programming and parallel port back then, writing c++ with djgpp with Allegro.
gbulmer
Moderator
stephanschulz - I think the thing that gives the high performance are the LED strips which handle PWM themselves.
For example, have a look at http://www.adafruit.com/products/306
which have Arduino libraries for driving the LED strip.
Maple has two SPI peripherals, so it could drive two sets of strips with very low overhead.
Edit: The performance of the mbed they use is pretty close to Maple, i.e. it is the same Cortex-M3 processor, running a bit faster. Hence I think pushing the problem of controlling brightness into the smart LED strips has a much more dramatic effect on the performance of the overall system. Once set, the smart strips will handle PWM for themselves until the brightness needs to change.
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