BLUE/GREEN blink interval speed + RED fade in/out are controlled by one potentiometer.
when the pot is closer to a value of 0, the blinking is very fast, and there is no red to be seen or mixed in. as the pot val increases, the blink slows down, and you see red getting mixed in, until the blink is at it's slowest, and nearly disappears because all you see is red.
code is HERE
••• joe saavedra + katherine lee •••
The POT fades the blue LED in and out,
increases/decreases the blinking speed of the green LED and changes the
speed and frequency of the sound on the speaker.
This project board controls the fading speed and frequency of the green LED (PWM 11) and the blinking speed of the blue LED (pin 13) though the potentiometer.
Here’s my LEDs with an IR sensor plugged in, showing both the proximity and the reading using 8 LEDs in a line as well as a fading PWM LED.
http://vimeo.com/moogaloop.swf?clip_id=3943667&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1
IR Sensor with LEDs from Steve Varga on Vimeo.
Download IrLEDs
One potentiometer controls the speed of blinking of the red LED which connected to a digital out in the Arduino. The other potentiometer controls the PWM of the white LED.
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Making Toys 
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