Prototype sunrise alarm clock. Fades in blue lighting, then white lighting. I built this for the Sparkfun Faire challenge. Uses a SX1509 so it can be hooked up to a Raspberry pi. The SX1509 communicates to an Arduino or Rpi via I2C and has built-in PWM, so you don’t need a DAC. The SX1509 feeds two FET controllers (again on Sparkfun breakout boards) to control higher current strips of LED’s. The strips are manhattan style LED’s on copper clad board. I ran the boards across a table saw to produce a nice 1/8 inch that effectively makes two buses.
