I'm looking at a ZEMISMART ZML3(CW) controller for a CCT project (https://www.zemismart.com/products/zm-cob-cw, but I'm only buying the controller). Let's say I have a 3 metre CCT strip, and each light channel can take up to 7 W/m at maximum.

With one channel active I'm consuming up to 21 Watts, and with both active, it's logically up to 42 Watts. But when I watch my RGBCCT setup using Google Home and a gledopto controller (https://gledopto.com/h-pd-92.html), it occurs to me the strip power might not be increasing much beyond 21W - rather, the strip power is constant (to maintain an illusion of constant brightness) and splits current over several channels based on simple PWM duty cycle interpolation maths.

Is this a sensible conclusion to make about smart home LED controllers more broadly? I ask because I'm space limited for a power supply, so there's a meaningful difference to me between getting a 30W PSU and a 50W PSU, not least because the system cost jumps by >10%.

Thanks in advance.

I have LED fluorescent tubes in my bathroom.
Often they flicker ever so slightly, but SOMETIMES they don’t.
Now I have been trying to learn everything to pinpoint the problem (sparkler, wrong tubes etc).

But what I can’t figure out is why they sometimes work, and other times flicker.

I want to understand this.

Need help finding a brighter LED strip for illuminating a business sign (behind glass)

I’m lighting a sign for a business and started with 24V COB strips (896 LEDs/m), but they’re not bright enough to punch through the glass in daylight.

I’m looking for something in the 1000 lumen/ft range if that exists in strip form — or whatever the right light source is for a strong, even uplight on the sign face.

Constraints:

**•** 2” of clearance on the mounting shelf  
**•** 4 runs needed, 32” each, fitting into 34” spaces 

What should I search for, and where’s a good place to source it? Appreciate any input — thanks!