Category: Lighting

LED layout lighting power supply and dimmer

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Preparing LED layout lighting power supply and dimmer on the Burbank Branch in N scale

Lighting is a key factor on a model railroad layout. Good lighting ensures the layout is well-illuminated and visually appealing. Nowadays, COB LED strips provide an excellent source of evenly distributed light (with no dark spots) and are more energy-efficient compared to fluorescent or traditional light bulbs.

LED strips are also dimmable, provided they are powered through dimmable power supplies and connected to a dimmer.

Before installing the LED strips, I built a power and dimming station on a piece of 15mm-thick MDF to ensure clean and organized wiring.

LED layout lighting: power supplies and dimmers

In the photo above, there are two power supplies:

Dimmers

The three yellow square devices are dimmers. They are powered by the power supplies and provide dimmed current to the LED strips. Each dimmer is connected to a normally open pushbutton, which controls both the on/off function and dimming.

Initially, I planned to light the layout using only the combined 2700K and 4000K LED strips, with the dimmer allowing for a custom balance between the two color temperatures. However, I later decided to include a blue LED strip as well to illuminate the layout for night scenes.

Cooling

To improve cooling, I attached the power supply to the MDF baseboard using small nuts, which keep the power supplies elevated and allow air to flow underneath.

Raised power supply detail

The dimmers will be connected to pushbuttons, as shown in a previous post. The pushbuttons enable custom combinations of the three LED strips (4000K, 2700K, and blue) to create various lighting scenes beyond the traditional bright daylight.

Conclusion

Proper LED layout lighting significantly enhances the realism and visual appeal of a model railroad layout. By using COB LED strips, modelers can achieve evenly distributed light without dark spots, creating an optimal viewing experience. Pairing dimmable LED strips with a dimmable power supply and a dimmer switch allows for customizable lighting scenarios, from bright daylight to subtle nighttime effects.

For a clean and organized installation, mounting a power and dimming station on an MDF board helps manage wiring efficiently. Investing in a well-planned model railroad lighting system not only improves aesthetics but also ensures reliable, long-term performance.

Layout lighting with LED strips

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Using dimmable LED strips for layout lighting

Every model railroad layout needs proper lighting and COB LED strips are relatively inexpensive. They can be easily hidden behind the valance to illuminate the whole layout with no dark spots.

I purchased a 200W dimmable power supply, two dimmers, and two COB LED strips (one 2700K and one 4000K). The plan is to wire the strips so they can be controlled and dimmed separately, allowing for the creation of the exact color temperature or varying light intensity to simulate early morning or late evening scenes.

Here is the test wiring and light effect. The dimmers are controlled using standard 230V buttons.

Dimmable LED strip power supply with dimmers
Bright COB LED strips, laid of the floor for testing

COD LED strips are certainly more expensive than traditional LED strips, but provide a consistent and continuous light with no dark spots. The strips can be cut and are quite flexible. A perfect solution for layout lighting is using LED strips.

New blue layout lighting LED strip for night scenes!

An updated version of the lighting power supplies and dimmers (including a blue LED strips for night scenes) is available.

Adding blue LED strips to the layout creates a subtle nighttime effect, simulating moonlight and low-light conditions for evening scenes. This blue lighting enhances the realism during nighttime operations, adding atmosphere.

By using different color temperature LED strips, such as 2700K for warm daylight, 4000K for neutral daylight, and blue strips for nighttime, I can effectively recreate realistic sunrise, sunset, and day-to-night transitions, enhancing the visual depth and atmosphere of the layout.

COB LED strips are ideal for creating a uniform lighting effect, making them perfect for model railroads where every detail needs to be visible without shadows or uneven lighting.

With the ability to customize brightness and color temperature, these strips help replicate realistic lighting conditions, from bright midday sun to soft evening glow, enhancing the layout’s realism.