Pain Point 2: Poor Lighting Effects (Sawtooth Light, Cut‑Off Light, Brightness Inconsistency from Head to Tail, Obvious Graininess)

Sawtooth light: The strip is not installed straight; bending or wavy placement causes the light spot to appear wavy or jagged.
Cut‑off light: The strip is placed too close to or too far from the edge of the wall, creating a harsh, sharp demarcation between light and shadow on the wall surface.
Brightness inconsistency from head to tail: The strip is too long (>5 m) and powered from only one end; the resistance causes a voltage drop at the far end, making the tail end visibly dimmer.
Obvious graininess: The LED density is too low (<120 LEDs/m), so individual light spots remain visible even when covered by a diffuser.

Solutions:

During installation, pull the strip completely straight and secure it firmly using dedicated mounting channels or aluminium alloy clips.
Keep the strip at a depth of 8–12 cm from the ceiling edge, or use a 45° aluminium profile strip for precise light control.
For long runs, use dual‑end power supply. Select the power cable gauge according to the load (for 100–200 W, 1.0–1.5 mm² is recommended).
Use a flicker‑free constant‑current driver, and ensure uniform colour temperature throughout the same space.

Optimized Layout Methods:

Plan the strip routing in advance to avoid sharp turns and kinks.
For applications requiring even wall‑washing, pre‑installed aluminium channels are preferred—they keep the strip straight and also protect it from dust.
In long, narrow spaces, consider feeding power from the middle and splitting into two branches, or use a higher‑voltage system (e.g., 48 V) to reduce voltage drop.