Compared to 'typical' DIY LED rigs what makes this one capable of lightning effects?
Are the dimmable drivers what allow the rapid on/off of the LEDs?
Does the profilux provide the programming and the light control portion of the lightning effects?
The lightning effects are generated by the profilux. In order to make them work with my DIY rig I had to do a few things.
First off, I used two LEDControl4 modules for the profilux which were originally designed to be used with PacificSun LED fixtures.
The modules were designed to use an open collector PWM signal.
The idea behind these modules is that they take the analog 0-10V signal, and take the digital signal usually provided to the Simu Spots/bars by GHL and combine it into a PWM signal for the lamps to use.
I then added the Meanwell PWM drivers.
The Meanwell drivers are PWM, but they are not open-collector PWM, they use a 10V powered PWM signal.
The solution to this was to build a pull up resistor circuit. Thankfully GHL provided a small diagram that got me started:
I built my circuit using an external 10V power supply and a resistor as per the diagram. Worked like a charm!
Typical 0-10V dimmable drivers do not allow for the rapid flash of lightning as they have a ramp up/down that takes a few milliseconds. They simply aren't fast enough. PWM does allow for this however.
In short, the Profilux does the signal generation for the lightning, my DIY rig is simply listening to the signals and providing the output as required.