Help needed building a room light with integrated roulette circuit
- Thread starter Benn1
- Start date
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.
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.
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
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.
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.
audioguru2
- Apr 6, 2004
- 12,026
- Joined
- Apr 6, 2004
- Messages
- 12,026
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.
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.
