To dim the LED's i would use a microcontroller between the control system and your Triac boards. When the call for a light comes, use PWM (Pulse Width Modulation) from the microcontroller to the Triac input to very they amount of time the led is on, the eye perceives this as dimmer. The microcontroller can then slowly ramp up the PWM to 100% over whatever time period you define. You could use the same logic when turning off the light to slowly ramp down LED to mimic an incandescent bulb.
The process you are describing uses a zero cross detector and can be implemented easily to control dimming, however the issue with this is that while dimming the LEDs they are fast enough that you can see them flashing as they dim, there is also a voltage at which they cut off abruptly, the current colored LED PAR lights on the market arent well suited for dimming. When dimming an AC circuit, you must detect the point where the AC voltage crosses 0v, and you chop off the leading edge of the sine wave according to the amount you want to dim the bulb.
Very impressive, I was very curious about the story behind the lighting setup and how that would've been done. The lights really do play a role in the shows presentation.
Incredible! Yeah I wish the LED lights would work. Does the heat from the lights damage the characters? It seems like it would, knowing how hot spot lights can get.
Interesting thing to know if you put a led under a normal voltage the bulb is dimmer. And has less light however if you put it on it normal voltage it will be bright.💡
With the led dimming issue I saw you were modifying each individual bulb with capacitors. What if you reproduced the triac boards (time consuming yea) with capacitors to make the actual electrical signal too the lights dim on and off and then used dimmable led bulbs?
@@electricwombat5967 it should work on the AC side as well. Similar to how a old dimmer knob works by resisting the amount of electricity to the light, the capacitor would take a slight bit of time to charge and discharging creating the same effect of a dimming on and off bulb
@@FourtyFiftyEightyI’m not really sure that would work correctly with LED bulbs. With the rectification and other electronics they stick in these things, I would imagine that type of dimming wouldn’t work well. This is not my expertise though so you might be right.
Great work, just a few thoughts. First, you are burying the lead on such effort related to changing the dimming curve on an LED and all the wiring work, when you could purchase used mini dimmer packs often sold by/for DJ rigs and tiny lighting console that each or both often have a variable setting for dimming curve for use with LED lamps. Your Sylvania and EHD lamp for the Altman Leko will not be around much longer. Not for nothing, keep the original figures but this would have been a fantastic opportunity to upgrade the lighting with the same look but with modern tech, you simply needed to ask/consult with a professional, theatrical LD. Lastly, along with the terrible use of orange, outdoor and non grounded indoor consumer grade extension cables, you failed to include a final show at the end, what would have been a great finale to the series.
Thanks for leaving a comment. I'm not sure if the dimmer packs would integrate into the system very well, but it might be something I'll look into in the future. Though I understand the criticism is regard to the cables, there is not a significant load going through any of them. 4 amps maximum. As for the finale, this is not the final video in the series. I have many more videos to release.
In regard to LED lighting, I would switch to led lights that are controlled by the "DMX" protocol that is used in almost all theatical/entertainment lights, This I would control with computer based software that in turn is triggered by the original low-voltage control signals. It would give a lot more flexibility, decrease the wiring and decrease your cooling and electric bill
@@electricwombat5967 True, but useing Dmx would be ideal for a full digital conversation. With timecode being available on most midrange to high end console.
3:33 I don't know why, but the image of a faceless Beach Bear jamming out while Fatz is just standing there looking out into the distance is kind of funny to me.
