26mm vs 35mm vs 40mm vs 65mm RGB Pixel Lights: Which Size Fits Your Project?

LikeLight Tom · Operations · Technical reviewer: pending confirmation

Quick buying answer

Pixel-light diameter should be selected together with visibility, mounting clearance, centre pitch, color system and controller—not as a stand-alone size.

A larger globe can be easier to see at distance, but it is not automatically brighter. A smaller node can support tighter geometry, but only if the mounting hole, cable bend and service access fit. Approve the effect with a representative mock-up.

1. Diameter is not pixel pitch

**Diameter** describes the housing. **Pitch** is centre-to-centre spacing in the installed layout. A 40mm product can be installed at 100mm pitch; that does not make it a P40 system.

For a straight length `L` and target pitch `P`, a first purchasing estimate is:

`point quantity = ceil(L ÷ P)`

The final CAD point list must handle corners, endpoints, openings and irregular curves.

2. Worked 20 m outline calculation

These pitches are teaching scenarios, not LIKELIGHT mounting recommendations.

Nominal face gap at 100 mm pitch

The subtraction only exposes crowding. Use the exact dimensional drawing before drilling or ordering a panel.

3. What can be calculated from current product evidence

26mm example

The 26mm page publishes 0.72 W per point [S1].

This excludes supply loss, derating, cable drop, controller, inrush and code margins.

35mm planning envelope

The 35mm page lists 1.44 W and 2.16 W but does not create a reliable version matrix between voltage, LED count and power [S2]. For 200 points, use **288–432 W** only as an early envelope:

`200 × 1.44 = 288 W` and `200 × 2.16 = 432 W`

Do not select power supplies from one assumed endpoint. Freeze a sample's voltage, LED count and measured agreed scene first.

40mm and 65mm stop gate

The current 40mm page leaves watts and IP as fields to specify [S3]. The 65mm page does not publish the voltage, watts or channel footprint in the evidence reviewed [S4]. Mark these **pending confirmation**; do not invent an electrical BOM.

4. Product-selection matrix

The category page confirms a broad amusement portfolio [S5], so the right answer may be another diameter, cabochon or profile product after the effect is sampled.

5. Full system-cost comparison

Do not compare only price per point:

`installed cost = nodes + custom spacing/wire + controller + supplies + connectors + panel/track + labor + commissioning + service access`

A smaller node at a tighter pitch may increase point count, controller outputs, connectors and drilling. A larger globe may reduce count, but can require more structural clearance and higher per-point load. Only a frozen layout and product version makes the quote comparable.

6. Information to send for an accurate quotation

1. Dimensioned ride, sign or facade drawing.
2. Point coordinates or candidate centre pitch—not diameter alone.
3. Total quantity by zone, including corners and spare policy.
4. Closest and normal viewing distances.
5. Photo/video of the desired effect and content speed.
6. RGB or RGBW and any white-light requirement.
7. Preferred 26/35/40/65mm options or request for two samples.
8. Voltage, controller, protocol and output-port constraints.
9. Power-feed positions, maximum branch lengths and cable routes.
10. Mounting panel thickness, hole/clip method and service access.
11. Outdoor exposure, IP target, vibration and connector type.
12. Destination market, certification documents, quantity and deadline.

7. Sample approval workflow

1. Verify model label, voltage, watts, IC/protocol, pinout and color mode.
2. Measure housing, flange, hole/clip and connector envelope.
3. Build a representative pitch panel, including one curve and one service joint.
4. View it at the nearest and normal audience positions with real content.
5. Test controller mapping, color order, dimming and restart behavior.
6. Measure branch input/end voltage and agreed worst-scene load.
7. Inspect waterproof joints, drainage, strain relief, vibration and replacement access.
8. Freeze the golden sample, CAD coordinates, wiring, BOM and acceptance record.

8. When not to choose by size

• Do not use housing diameter as centre pitch.
• Do not assume a larger globe is brighter or uses more power without photometric/electrical evidence.
• Do not choose 65mm for a tight layout before checking bases, cables and service clearance.
• Do not choose 26mm for a long viewing distance without a visibility mock-up.
• Do not mix WS2811/UCS1903/SPI/DMX products in one controller file without confirmed mapping.
• Do not release 40mm or 65mm electrical quantities while watts remain unknown.
• Do not treat node IP as proof that field connectors and enclosures are equally protected.

9. Copy-ready inquiry

> We need pixel lights for a [20 m] ride/sign/facade outline in [country]. Candidate pitch is [75/100/150 mm], viewing distance is [x m], and the effect is [RGB/RGBW animation]. Please compare 26mm, 35mm, 40mm and 65mm options with exact model, body/hole drawing, quantity, voltage, watts/point, IC/protocol, controller capacity, IP/connectors, wiring zones, sample price, bulk price, certifications and lead time.

FAQ

Does 40mm mean P40 spacing?

No. It is the housing diameter; the project drawing defines centre pitch.

How many points are needed for a 20 m outline at 100mm pitch?

The first straight-line estimate is 200 points. Corners, endpoints and openings must be finalized in CAD.

Is 65mm brighter than 26mm?

Diameter alone cannot prove brightness. Compare approved output data and a side-by-side sample.

Which option has published power data?

The reviewed 26mm page publishes 0.72 W/point. The 35mm page lists an unpaired 1.44/2.16 W range. The reviewed 40mm and 65mm evidence needs confirmation.

Can RGB and RGBW use the same controller file?

Do not assume so. Channel count, protocol, mapping and color order must match the exact product mode.

What makes a quote comparable?

Use the same point coordinates, effect, product version, accessories, controls, power zones, certification scope and delivery terms.

Sources checked

2026-09-18

1. S1: LIKELIGHT — 26mm RGB pixel light, WS2811/UCS1903, DC12V
2. S2: LIKELIGHT — 35mm amusement RGB pixel light
3. S3: LIKELIGHT — 40mm DC24V addressable pixel dot, 9 RGB LEDs
4. S4: LIKELIGHT — 65mm RGBW amusement pixel light
5. S5: LIKELIGHT — Amusement and decorative pixel-light category

LIKELIGHT 26mm RGB pixel light L-D263-12V

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