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  1. #1
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    How to change rgb led color with a switch (without micro-controller)?

    Hi
    I want to find a way, to controll rgb led color (specific color for example 5 or ten specified color) with a tact switch and without micro-controller. on the other hand want to use simple and cheap material.
    thanks for your help

    •   Alt9th January 2017, 08:36

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  2. #2
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    Re: How to change rgb led color with a switch (without micro-controller)?

    Cheapest solution will be the microcontroller. Simplest will be the logic like counter IC. Just make it count and attach driver to output.
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    •   Alt9th January 2017, 09:10

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  3. #3
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    Re: How to change rgb led color with a switch (without micro-controller)?

    Quote Originally Posted by Easyrider83 View Post
    Cheapest solution will be the microcontroller. Simplest will be the logic like counter IC. Just make it count and attach driver to output.
    with microcontroller whats your suggestion (low cost)? do you have any sample schematic?
    thanks



    •   Alt9th January 2017, 13:29

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  4. #4
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    Re: How to change rgb led color with a switch (without micro-controller)?

    Assuming that red is the MSB, green the middle bit, and blue is the LSB, any 3 bit binary counter would provide the following sequence:

    RGB
    000 black
    001 blue
    010 green
    011 cyan
    100 red
    101 magenta
    110 yellow
    111 white
    repeat....

    You could use one half of a 74C393.
    The switch would have to be debounced. Google switch debouncing.
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