First Wled Setup, Cablemanagement

Questions
1

LED_Wohnzimmer.drawio
LED_Wohnzimmer.drawio1920×2005 312 KB

So this is my first Plan.
I have 3 Power Supplies 5V 70A 350W, 3x 5m SK6812 144LED/m, 14m 45 degrees aluminum profiles with diffuser.

All 3 Powesupplies are at the same spot. The LEDS gonna be in the ceiling inside corner

Im planning to use 4mm² cables on the 2x 2,33m entrances, 6mm² cables on the 2x 7,33m and 2x6mm² cables on the 1x 10,48m(parallel, cheaper than 10mm²). I didnt buy cables yet, I tried to find out how high the voltage drop within the cables is, and according to the formula ΔV=A/(2⋅L⋅I⋅ρ​), even 10 mm² is too small for 7.33 meters; the loss should be 0.78 V.

Im gonna use a ESP32 with WLED, its gonna be rigt on the stripes, maybe 20cm away.

Questions:

  1. Is my cable management planned correctly/efficient?
  2. Which Cables do i need for the respective lentghs?
  3. Do i need a level shifter for my ESP 32?
  4. can i connect the data lines with 0,2mm cables?
  5. Do i have to connect all grounds? ESP32, and all Grounds of the 3 PSU/LEDS?
  6. Where and how am i supposed to hide all those cables?
  7. Anything else i forgot and/or dont even know exists :sweat_smile:
2

you need one injection about every 5A worth of LEDs. make sure to add fuses, 70A is some serious current.

3

and don’t connect the DC + from one power supply to another power supply. All DC grounds must be common. >>The bottom right corner of your diagram shows 2 positive connections from 2 different power sources connected together.

4

No it doesn’t. I coudlnt rly visualise it so i wrote frost second and third stripe.on the right corner a 5m stripe ends another one begins

1 Like