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  • AaronK73 commented on noahw's instructable LEDs for Beginners5 months ago
    LEDs for Beginners

    A microcontroller with 4 outputs can go for as little as 50 cents (if you have the software/hardware to upload). Here's an example[http://electronics.stackexchange.com/questions/74201/is-there-an-ic-chip-to-toggle-through-three-outputs] without microcontrollers. You can also build toggles using simple circuits like JK Flipflops, or buy toggle switches.

    A microcontroller with 4 outputs can go for as little as 50 cents (if you have the software/hardware to upload). Here's an example ( http://electronics.stackexchange.com/questions/74201/is-there-an-ic-chip-to-toggle-through-three-outputs ) without microcontrollers. You can also build toggles using simple circuits like JK Flipflops, or buy toggle switches.

    There's a circuit called a voltage divider. It's made by placing two resistors in series, then connecting a wire to the center of this series. Look it up, perform calculations to figure out which resistors will split the voltage into 6V, and use it.

    This isn't quite correct... 1.7V(in)-1.7V(f)=0V, 0V/0.02A=0 Ohms. It should be fine without a resistor, though a resistor won't hurt if your voltage source has potential to spike.

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