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Step 7The electrical circuit & programming (overview)
I used a very simple circuit here. the LED's are in 3 banks. each bank is all one color of led (one bank is red, one is green, one is blue). all the LED's in a bank are wired in parallel. each bank uses my simple LED constant current source. each bank can be turned on or off using a power mosfet. lastly there is an Atmel AVR microcontroller which turns the 3 mosfets on and off in a few simple patterns, i've attached the C code for the microcontroller.
there are two simple patterns currently programmed:
1) blinking the 3 banks. this is a very epilepsy-inducing pattern, it blinks each bank for 1/7 of a second, in a cycle.
2) color fading. using PWM, it fades each color in and out in a cycle, the same pattern you now see in innumerable chinese 10 cent blinky toys.
there are two simple patterns currently programmed:
1) blinking the 3 banks. this is a very epilepsy-inducing pattern, it blinks each bank for 1/7 of a second, in a cycle.
2) color fading. using PWM, it fades each color in and out in a cycle, the same pattern you now see in innumerable chinese 10 cent blinky toys.
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