Animated DJ table using LPD8806 and a teesny 3.1.
I wanted to go with a sci-fi vibe. I think it works pretty well. Originally I wanted each node to be sound-responsive to frequency, but even with the DSP modules in the teensy it still is a little glitchy (about 16 Hz) and flickers a lot.
Always more troubleshooting… But I’m pretty happy with the result.
http://www.youtube.com/watch?v=5muieshNwNM
Very nice! How many LEDS total, and how many nodes? (My inner optimizer can’t help but wonder if there are ways to do it)
Very nice looking
There are 684 LEDs in total. The strips I have are 52/m.7 nodes, 3 in the middle, 4 on the outsides.
I was using the teensy audio board to capture the audio and using their library to do the processing. That’s the bottleneck currently, it doesn’t seem to have a FFT smaller than 256 bins. The audio board seems to intefere with the hardware SPI for its SD card, even though I’m not using an SD.
I’m sure it’s possible to do, just haven’t had time to investigate it fully yet.
Are you using a teensy 3.0 or a 3.1? The 3.1 has a second hardware SPI output (and believe me, one of the things on my list is to support either parallel output across both hardware SPI ports and/or DMA based output across both 
- and I’m pretty sure i’ve got the library supporting that if you use those pins.
Teensy 3.1… Awesome, I didn’t know that. Will try it out soon and report back.
yeah, pin 7 is data and pin 14 is clock (or it’s the other way around, i forget, now)