A somewhat larger WS2815 12V indoor project (17m | 2.450 LEDs)

Questions
1

Hello everyone,

I want to illuminate my living room (5 by 4 meters) with WS2815 LEDs. A total of 17m of LED strip with 2,450 LEDs will be installed.

I’ve already read up on the basics and calculated the power requirements using https://wled-calculator.github.io/.

My planned setup and my concerns are as follows:

What I want to do:

  1. Ideally, control all 2.440 LEDs via a single controller/segment display.

  2. Switch between presets using button 1 of a double push button (via IO13).

  3. Turn the power supply on and off using button 2 of a double push button (due to the high standby watt of 2.450 WS2815 LEDs).

Hardware:
Strip: WS2815 12V, 144 LEDs per meter
Controller: Elite 4D-EXMU
Power supply: 12v with 40A (32A are calculated)
Total power feed points: 10

Cable runs: one run is only 1m, many are 4-5m, and some are even 6m (diagonal), which is why I’ve decided to use 2.5mm² cable everywhere. I solder a 10cm length of 1.5mm² wire to the LED strip itself, which is then connected to the 2.5mm² wire using a Wago connector.

My questions are:

Is the wiring with the power feed points optimally chosen, or will it be unstable?

Should I use one large power supply or two smaller ones?

Is one large fuse between power supply and distribution rail (blue) sufficient, or should each individual power feed be individually fused after the distribution rail as I’ve planned?

What’s the best way to implement point 3 (powering on/off the power unit)?

Verkabelungsplan_LED_Wohnzimmer
Verkabelungsplan_LED_Wohnzimmer1920×1425 570 KB

Hoping for a lively discussion :slight_smile:

Cheers,

Chris

2

Did you have a good reason to pick WS2815? Normally you would not use that for general indoor illumination as it is less efficient and has no white pixel, so illumination quality will be poor. Is it the best choice for what you want to do?

The number of injection points and fuse values both seem excessive. Have you tried asking https://wled-calculator.github.io/ ?

3

I bought the WS2815 stripes a year ago. At this time it was a recommendation for a guy i follow a lot regarding SmartHome. I selected 144 LED/m because of not seeing each led when it is turned on and sitting behind the opal cover of the ALU profile.

Of course I used the power calculator for calculating this.

4

I would double check the values you entered into the calculator. A reasonable number of injections is 4-5, and your fuses should be sized for the current within each injection point as too large a fuse will not protect you in the event of a short.