pulsing 3-color LED''s
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Posts: 46,084
I believe Velleman or one of the other kit folks makes a surface mount kit
with a preprogrammed PIC that already does it.
Keep in mind the 3-color LED's I have seen have 4 elements -- there are 2
blue sources in addition to the other two colors.
Original Message
> I'd like to do something like strobe a handful of 3-color led's so I can
> do smooth color fading. This looks, I think, something like pulsing out 3
> simultaneous pulsout's per LED.
>
> Obviously, with a 555 timer and some cap's, one could do a constant pulse,
> and with a stamp or a pic dedicated per each channel of pulse, one could
> do it from a master microcontroller, but I'm wondering if there's some
> better way to do it since even PIC's would be somewhat expensive for this
> task, and 555's aren't programmable.
>
> Is there something like an IC which will pulse continuously that can be
> programmed to the pulse duration? Is there another methodology I could
> use?
with a preprogrammed PIC that already does it.
Keep in mind the 3-color LED's I have seen have 4 elements -- there are 2
blue sources in addition to the other two colors.
Original Message
> I'd like to do something like strobe a handful of 3-color led's so I can
> do smooth color fading. This looks, I think, something like pulsing out 3
> simultaneous pulsout's per LED.
>
> Obviously, with a 555 timer and some cap's, one could do a constant pulse,
> and with a stamp or a pic dedicated per each channel of pulse, one could
> do it from a master microcontroller, but I'm wondering if there's some
> better way to do it since even PIC's would be somewhat expensive for this
> task, and 555's aren't programmable.
>
> Is there something like an IC which will pulse continuously that can be
> programmed to the pulse duration? Is there another methodology I could
> use?