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The smallest RGB LED I've ever seen came in a 1206 package. Do you plan on doing the internals yourself? I don't envy trying to solder even one 1206 without a P&P machine (heh) or re-flow oven let alone 12. Each one of those will need its own driver/controller, and I've never seen a discrete one outside a complete (RGB LED + driver + SPI or 1-wire controller) 5050 package.Honestly, you're skirting along custom IC territory. This has similar capabilities and besides the controller itself, the 5050 is the biggest thing on there. I don't mean to rain on your parade but you may want to either reduce it to something like 9 or 6 LEDs or find an IC that just has loads and loads of constant current LED drivers in it.
The smallest RGB LED I've ever seen came in a 1206 package. Do you plan on doing the internals yourself? I don't envy trying to solder even one 1206 without a P&P machine (heh) or re-flow oven let alone 12. Each one of those will need its own driver/controller, and I've never seen a discrete one outside a complete (RGB LED + driver + SPI or 1-wire controller) 5050 package.
Honestly, you're skirting along custom IC territory. This has similar capabilities and besides the controller itself, the 5050 is the biggest thing on there. I don't mean to rain on your parade but you may want to either reduce it to something like 9 or 6 LEDs or find an IC that just has loads and loads of constant current LED drivers in it.
