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Help needed building a room light with integrated roulette circuit


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Hi Benn,
Welcome to this forum.

If you have the roulette circuit you can use half of the LED outputs (5 of the 10) to drive a triac for each of the lamps. Put a switch on each wire to enable individual on/off. Yes the transformer can be used but the electronics must have DC so a rectifier and a capacitor will be necessary.

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Hi Benn, Hi Ante,
Instead of having an "off" period between lit bulbs, add a simple diode OR gate for pairs of LED outputs. So LED outputs 0 and 1 each have a diode to the 1st triac's gate, LED outputs 2 and 3 each have a diode to the 2nd triac's gate, etc. Then the bulbs will step smoothly around and around.
A roulette wheel is good application for those extremely bright Lumileds. Use all 10 outputs then you just need DC and Mosfets instead of triacs.

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Hi Ante,
Don't you like my diodes idea? No "off" time and the driver stays cool.
Your pulse-stretcher would be good for car LED turn signals. Now they switch so quickly that a quick look at the "off" time shows nothing. It would be good to have them turn-on quickly then fade slowly.
A guy on the other site is making a "pointing" turn signal with an LM3914 in its bar mode. Did you see a post where a 555 is prevented from having its very 1st cycle (after power is applied) much longer than the rest? He needs that.

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