Wiring Guides & Controller Settings

 

A guide for Connecting LED Strips to the controller.
Power Distribution

Connecting the Power Supply Grounds

  • Before doing anything else, take a piece of 0.5mm² wire and connect the GND (Negative) screw on the top power supply directly to the GND (Negative) screw on the bottom power supply.
  • If you forget this, your lights will flicker rainbow or not work.

Wire the Top Half (First 4 Strips | 0m – 20m)

  • Connect power and ground from PSU 1 to your ESP32 Controller.

  • Run a power and ground wire from the fuse to the start of the 1st LED strip.

  • Go to the point where the 2nd strip ends and the 3rd Strip begins (the 10m mark). CUT the RED (+) wire between these two strips.

  • Run a long Power (Red) and Ground wire from the fuse to the very end of the 4th Strip (the 20m mark). This powers strips 3 & 4 backwards.

    • Result: PSU 1 powers the first 10m from the front, and the next 10m from the back.

Wire the Bottom Half (Next 4 Strips | 20m – 40m)

  • Run Power and Ground from the Bottom PSU (via fuse) to the start of the 5th Strip (the 25m mark).

  • Go to the point where the 6th strip ends and the 7th Strip begins (the 30m mark). CUT the RED (+) wire between these two strips.
  • Run a second set of power and ground wires from the fuse all the way to the very end of the 8th/Last strip (the 40m mark). 
    • Result: PSU 2 powers the first 10m from the front, and the next 10m from the back.

Connect the Data (The Green Wire)

  • Run the Green wire from the Controller to the start of the 1st Strip.

  •  Connect the Data wire from the end of the 4th Strip (20m mark) to the start of the 5th Strip.

    • Tip: Because the connectors are cut off, strip the Green data wire sleeves and wire them together using a Wago clip.

 

Controller Setup (Web/App Interface)

In the WLED App/Web UI:

  • Go to Config (gear icon) → LED Preferences → Hardware Setup → LED Outputs.

  • Configure the output:
    • Output #1 → LED strip

    • Chipset = WS281x (StarEFX LED Strip)

    • Data GPIO = 16

  • Set LED length using the formula:

    • Length = Total strip length (mm) ÷ 41.666 mm (Length of each pixel)

    • Enter this value for Output #1 → Length.

      • Note every 5M strip has 120 pixels

  • Once configured click the  save button up top
  •  Troubleshooting LED length:
    • If only part of the strip lights up → length is too short.

 

Segments Check

In the Segments tab:

  • Segment 0 → Dropdown

    • Start LED = 0

    • Stop LED = exact LED length entered in LED Preferences.

  • Once entered the length of the LEDs, click the tick to save changes.

If the LEDs don’t cover the full strip → the Stop value doesn’t match your LED length.