Show&Tell participant Bradley shared a write up for his LED Pipe Organ Illumination piece here!

Now there is a small stream of interesting parts for which I have no immediate application which nevertheless flow across my lab bench to be tested because you never know what you may need at some point, and I’m an irrepressible tinker. One of these was the Adafruit breakout board for the PCA9685 which is an IC by NXP which generates PWM signals for driving servos and fading LEDs. Their description page for the product had something which stuck in my brain…

“You can even chain up 62 breakouts to control up to 992 PWM outputs (which we would really like to see since it would be glorious)”

So there was a little gremlin in my brain saying “We need to do a gigantic LED project!” and then all at once, it came to me. The organ needs theatrical lighting effects for Halloween. The problem is, the organ is nearly three stories tall, lighting it up would require a lot of LEDs.

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Featured Product:

Adafruit 16-Channel 12-bit PWM/Servo Driver – I2C interface – PCA9685

SHOW AND TELL 11/10/2012 (video).