Addressable Digital COB LED Strip — RGB, RGBW & RGBCCT

ATOM LED's 2026 addressable COB range pairs dot-free diffusion with SPI digital control at 24 V DC, backed by a 5-year warranty and free UK delivery on 97% of products. Each strip ships from UK stock in Telford — not dropshipped — so your project stays on schedule.

SPI Protocol · 24 V DC · Individually Addressable Segments · Dot-Free COB · CRI 90+ · IP20 / IP65 / IP67 · Cut to length at marked intervals · 5-Year Warranty · Free UK Delivery

Jump to section:

1. What is an addressable RGB COB strip and how does it differ from standard RGB?
2. How does SPI protocol work on addressable COB LED strip?
3. Which controller do you need for digital RGB COB strip?
4. What voltage and driver should you use for addressable COB strip?
5. How do addressable RGB COB strips compare to standard RGB and RGBW COB?
6. Where are addressable digital RGB COB strips used in 2026?
7. What IP ratings are available for pixel COB strip?
8. How do you install addressable RGB COB strip step by step?
9. What wiring mistakes cause addressable strip to fail?
10. How do you calculate the right power supply size for SPI COB strip?
11. Can you cut addressable COB strip to length?
12. Why choose ATOM LED for addressable RGB COB strip?
13. Frequently asked questions — addressable digital RGB COB strip

Quick decision summary: If you need each LED segment to display a different colour at the same time — running chases, rainbow flows, colour-zoning across a ceiling, or pixel-mapped stage effects — you need addressable RGB COB strip with an SPI pixel controller. If you only need to change the entire strip to one colour at a time, RGBW COB strip is simpler and more cost-effective.

Who this is for: Lighting designers, AV integrators, sign makers, hospitality fit-out contractors, retail display specialists, and home-automation enthusiasts who need per-segment colour control, dynamic effects, or DMX/Art-Net integration through SPI pixel controllers.

Who this is NOT for: If you need a single uniform colour across the strip and plan to dim it with a standard wall dimmer, addressable strip is over-specified. Standard single-colour 24 V COB strip or RGBW COB strip will deliver a better result at lower cost. Addressable strip also requires an SPI pixel controller — a standard RGB controller will not work.

Common buying mistakes to avoid:

• Using a standard RGB controller: Addressable COB strip communicates through SPI data protocol, not the simple PWM channels that standard RGB controllers use — connecting one will produce no usable output.
• Choosing a dimmable driver: Addressable RGB strip requires a non-dimmable constant voltage driver at 24 V DC — dimmable drivers cause flicker, colour shift, and premature IC failure.
• Ignoring data signal limits: SPI data degrades over distance — most IC chips support approximately 5–10 m per data run before signal amplification is needed.
• Powering strip while still on the reel: Never power any LED strip while coiled — heat builds up rapidly, destroying adhesive and creating a fire risk.

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What is an addressable RGB COB strip and how does it differ from standard RGB?

Addressable RGB COB strip contains individually controllable LED segments, each with its own integrated driver IC, connected through an SPI data line. Unlike standard RGB strip where every LED changes to the same colour simultaneously, addressable strip lets you set a unique colour and brightness for each segment independently — making chase effects, rainbow gradients, and colour-zoning possible from a single strip run.

Standard RGB COB strip uses three PWM channels (red, green, blue) to mix a single colour across the entire length. Every LED on the strip shows the same colour at the same moment. This works well for mood lighting and uniform colour washes, but it cannot produce moving effects or display multiple colours along the strip at once.

Addressable RGB COB strip adds an IC (integrated circuit) chip to each controllable segment — typically every 1–3 LEDs depending on the chip density. Each IC has a unique address on the SPI data bus, which is how your SPI pixel controller targets individual segments. The result is per-pixel colour control across the full length of the strip.

The COB (Chip-on-Board) construction in the 2026 ATOM LED range means the LEDs are mounted directly to the flexible PCB under a phosphor layer, producing a continuous dot-free light line. Older addressable strips used visible SMD packages with dark gaps between each LED — those gaps became especially obvious during chase effects. COB technology eliminates that problem entirely, producing smooth flowing colour transitions with no visible hotspots.

Feature	Standard RGB COB Strip	Addressable RGB COB Strip
Control method	3-channel PWM (R, G, B)	SPI data protocol per segment
Colour per segment	Same across entire strip	Independent per segment
Chase/flow effects	Not possible	Full range of dynamic effects
Controller type	Standard RGB controller	SPI pixel controller required
Dot visibility	Dot-free (COB)	Dot-free (COB)
Typical voltage	24 V DC	24 V DC
Driver type	Non-dimmable constant voltage	Non-dimmable constant voltage
Price per metre (approx.)	Lower	Higher — IC chips add cost

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How does SPI protocol drive per-pixel addressable COB strip?

SPI (Serial Peripheral Interface) sends a data signal from the controller to each IC chip along the strip in sequence. Every chip reads its own colour and brightness instruction, then passes the remaining data to the next chip downstream. Clock and data lines run alongside the 24V power rails on the PCB. Signal integrity weakens beyond roughly 5 metres without a signal amplifier.

SPI (Serial Peripheral Interface) is a high-speed one-directional data protocol that sends colour and brightness instructions from the controller to each IC chip on the strip in series. The controller transmits a data stream containing the colour value for every segment, and each IC chip reads its own instruction, applies it, and passes the remaining data to the next chip in the chain — all within microseconds.

Every addressable COB strip has at least two signal lines alongside the power lines: a data line (often labelled DAT or DI) and a clock line (CLK or CI) on two-wire SPI chips, or just a single data line on one-wire protocols. Two-wire SPI chips such as the WS2818 and HD107S use both clock and data, which provides more reliable signal timing over longer runs compared to one-wire chips.

The practical implications for your installation in 2026 are:

• Signal direction matters: SPI data flows one way only — from the controller end (DI/CI) to the far end (DO/CO) — so you must connect the data input end of the strip to your controller.
• Data signal degrades over distance: Most SPI IC chips reliably carry data for approximately 5–10 m before the signal becomes too weak for consistent colour reproduction — beyond this, use a signal amplifier or inject data at a second point.
• Refresh rate determines smoothness: Higher refresh rates (typically 1,000–2,000 Hz on quality addressable COB) produce smoother chase effects without visible flicker on camera — important for retail displays and broadcast environments.
• IC chip type determines segment count: The specific IC chip on the strip sets how many individually controllable segments exist per metre, which directly affects how detailed your effects can be.

When specifying addressable COB strip for a project, always confirm the IC chip type with the ATOM LED technical team on 01952 370028 — different chips require different controller protocols, and mismatching will produce no output at all.

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Which controller do you need for digital RGB COB strip?

Digital RGB COB strip requires a dedicated SPI pixel controller that matches the IC chip protocol on the strip. Standard RGB controllers, Wi-Fi RGB boxes, and wall-mounted dimmers will not work — they output simple PWM channel signals that addressable ICs cannot interpret. ATOM LED stocks SPI pixel controllers from leading brands including controllers compatible with DMX512, Art-Net, and standalone effect modes.

Selecting the right controller depends on how you plan to use the strip. Here are the three most common 2026 scenarios:

• Standalone effects (no external software): Choose a controller with built-in effects — chase, rainbow, colour-cycle, breathing — controlled via remote or app. This suits retail displays, bars, restaurants, and home entertainment rooms where you want dynamic colour without programming.
• DMX512 or Art-Net integration: For theatre, stage, architectural facades, and AV installations where the addressable strip must sync with wider lighting rigs, use an SPI-to-DMX decoder or an Art-Net SPI controller. These convert standard DMX/Art-Net universe data into the SPI protocol the strip understands.
• Software pixel-mapping: For video-wall effects, reactive visuals, and complex mapped installations, use a controller that accepts pixel-mapping software output (such as Madrix, Resolume, or Jinx). The controller receives the mapped pixel data and distributes it across the SPI chain.

Browse the full range of SPI pixel controllers at ATOM LED — the product pages list compatible IC protocols for each unit. If you are unsure which controller pairs with your chosen strip, contact the technical team at operations@atomled.co.uk or call 01952 370028 before ordering.

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What voltage and driver should you use for addressable COB strip?

ATOM LED addressable RGB COB strip runs on 24 V DC and must be powered by a non-dimmable constant voltage driver. Using a dimmable driver causes flicker, erratic colour behaviour, and premature failure of the onboard IC chips. Brightness and colour are controlled entirely through the SPI data signal from the pixel controller — the driver simply provides clean, stable power.

This is one of the most frequently misunderstood points in addressable LED installations. The driver's only job is to deliver consistent 24 V DC at sufficient current. All dimming, colour-mixing, and effect sequencing is handled digitally by the SPI controller sending instructions to each IC chip. Adding a dimmable driver introduces PWM modulation at the power level, which conflicts with the IC chips' own PWM timing and causes visible problems:

• Flicker and strobing: Two competing PWM frequencies (driver and IC) create interference patterns visible to the eye and on camera.
• Colour shift: IC chips cannot maintain accurate colour mixing when their supply voltage fluctuates from a dimming driver's output.
• IC chip failure: Repeated voltage fluctuation stresses the onboard driver ICs, shortening their operational life significantly.

When sizing your driver, calculate total wattage by multiplying the strip's watts-per-metre by total length, then add a 20% headroom margin. For example, a 10 m run of 14.4 W/m strip draws 144 W — specify a driver rated at a minimum of 172 W (144 W plus 20%). This headroom prevents the driver from running at full capacity continuously, which extends its lifespan and reduces heat output.

Browse 24 V LED drivers at ATOM LED. For larger installations, LED power supplies with higher wattage ratings are available for multi-run setups.

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Addressable COB strip vs standard RGBW — which do you need?

Standard RGBW strip changes colour uniformly across its full length — every LED shows the same colour at the same time. Addressable COB strip controls each pixel independently, enabling gradients, chases, and flowing patterns. If you need one solid colour or white at a time, RGBW is simpler and cheaper. If you need dynamic pixel-level effects, addressable is the only option.

Addressable RGB COB strip provides per-segment colour control via SPI protocol, standard RGB COB changes the entire strip to one colour at a time via PWM, and RGBW COB adds a dedicated white LED channel for clean warm or cool white that RGB alone cannot produce. Each type serves a different purpose — the right choice depends on whether you need dynamic effects, uniform colour, or high-quality white output.

The table below compares all three types across the key specification areas that matter for 2026 UK projects:

Specification	Standard RGB COB	RGBW COB	Addressable RGB COB
Control protocol	3-channel PWM	4-channel PWM	SPI data per segment
Individual segment control	No	No	Yes
Chase/flow effects	No	No	Yes
White output quality	Cold violet-tinged	Clean dedicated white channel	Cold violet-tinged (no white channel)
Controller required	Standard RGB	RGBW controller	SPI pixel controller
Driver type	Non-dimmable CV	Non-dimmable CV	Non-dimmable CV
Voltage	24 V DC	24 V DC	24 V DC
DMX/Art-Net capable	Via decoder	Via decoder	Via SPI-to-DMX controller
Typical use case	Uniform colour wash	Colour plus clean white	Dynamic effects, pixel mapping
Cost per metre	Lowest	Mid-range	Highest

A common 2026 project approach is to combine addressable RGB COB strip in feature areas (bar fronts, ceiling coves with flowing effects) with RGBW COB strip in areas that also need clean white task lighting. Both run on 24 V DC, so the power infrastructure is shared — only the controllers differ.

Remember: RGB alone (including addressable RGB) cannot produce clean white light. The mixed-RGB white output has a noticeable cold, violet-tinged quality. If your project needs both colour effects and genuine white light in the same zones, consider using RGBW for the white-required areas alongside addressable RGB for the effects areas.

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Where do specifiers fit addressable digital COB strip in 2026?

Retail signage and window displays account for the largest commercial share. Architectural facade lighting, nightclub and bar ceiling features, stage and event production, and gaming room builds make up the rest. Residential use is growing in media rooms and home cinema ceiling arrays where programmable colour zones replace static downlights.

Addressable digital RGB COB strips are used across hospitality, retail, entertainment, architectural, and residential projects where per-segment colour control adds measurable value. The dot-free COB format makes them particularly suited to exposed or close-viewing installations where older SMD pixel strip would show distracting bright spots between LEDs.

The most common UK applications in 2026 include:

• Bar and restaurant feature lighting: Flowing colour effects along bar fronts, booth surrounds, and ceiling coves that respond to music or change throughout service — breakfast-warm through evening-vibrant.
• Retail window and display lighting: Programmable colour zones that highlight different product areas, with chase effects that draw attention from the street.
• Stage and event lighting: Pixel-mapped backdrops, set pieces, and scenic elements controlled via DMX or Art-Net from the main lighting desk.
• Architectural facade and feature walls: Building exteriors and interior feature walls with flowing colour gradients that change by time of day, season, or brand event.
• Gaming rooms and home cinemas: Bias lighting behind screens that reacts to on-screen content, plus ambient ceiling and shelf lighting with customisable colour zones.
• Signage and channel letters: LED sign making applications where individual letter colours can be independently sequenced.
• Staircase and handrail accent lighting: Each tread or section illuminated in a different colour, with motion-triggered sequential activation — mounted in aluminium profiles for heat dissipation and a clean finish.

For outdoor applications such as garden features or building facades, specify IP67 or IP68 rated addressable strip. Indoor-only installations at IP20 are suitable for dry environments. See the IP ratings section below for full guidance.

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What IP ratings are available for pixel COB strip?

ATOM LED addressable RGB COB strip is available in IP20 (bare PCB for dry indoor use), IP65 (silicone-coated surface protection), and IP67 (silicone-sleeved for outdoor and damp environments). IP65 provides surface-splash resistance only and is not suitable for permanent UK outdoor installations or bathroom wet zones under BS7671 — choose IP67 minimum for those applications.

Choosing the correct IP rating prevents premature strip failure and ensures compliance with UK wiring regulations:

• IP20 — dry indoor environments: Under-cabinet, ceiling coves, shelving, display cases, and any indoor location away from moisture. No silicone coating — thinnest profile, easiest to cut and connect. Best thermal performance because there is no insulating layer between LEDs and mounting surface.
• IP65 — light splash protection: Suitable for indoor areas with occasional moisture exposure such as kitchens (away from direct water contact) and covered porches. The silicone top-coating protects the PCB surface but does not seal the bottom or cut ends. Not rated for bathroom wet zones or permanent outdoor use in UK weather conditions.
• IP67 — outdoor and damp locations: Full silicone sleeve sealed at both ends protects against temporary immersion. Suitable for garden features, outdoor architectural lighting, and bathroom zones 1 and 2 where moisture contact is expected. For applications involving continuous water submersion (ponds, fountains), check the ATOM LED range for outdoor-rated COB strip at IP68.

When mounting any IP-rated addressable strip outdoors, use UV-stable profiles and ensure all connections are sealed with appropriate IP-rated connectors. The SPI data connection is just as vulnerable to moisture ingress as the power connections — a single corroded data pin will cause the entire strip downstream of that point to stop responding.

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How do you install addressable RGB COB strip step by step?

Installing addressable RGB COB strip follows the same physical mounting process as standard COB strip, with the critical addition of an SPI data connection between the pixel controller and the strip's data input. The sequence is: mount the strip, wire power from a non-dimmable 24 V driver, connect the SPI data line from the controller to the strip's data input, then configure effects on the controller.

1. Step 1 — Plan the layout and confirm strip direction: Identify the data-in end of the strip (marked DI or DAT on the PCB). The strip must be mounted so the data-in end is closest to your SPI pixel controller. Sketch your run lengths and note where power injection points are needed — typically every 5 m for addressable strip to maintain consistent brightness across all segments.
2. Step 2 — Mount the aluminium profile: Fix your LED strip profile to the mounting surface using appropriate fixings. Aluminium profiles are strongly recommended for addressable COB strip because the IC chips generate additional heat during operation. Never mount strip directly on bare metal surfaces without electrical insulation — this causes short circuits on the exposed PCB traces.
3. Step 3 — Apply strip to profile and connect power: Peel the adhesive backing and press the strip firmly into the profile channel. Run 24 V DC power cables from your non-dimmable constant voltage driver to the strip's power input terminals (V+ and V-). Use parallel wiring when powering multiple runs — never daisy-chain in series, as this multiplies voltage drop and causes brightness fade along the chain.
4. Step 4 — Connect the SPI data line: Run the data cable (typically 3-core: data, clock, ground or 2-core: data, ground depending on IC type) from your SPI pixel controller's output to the strip's data input. Keep the data cable as short as practical — long data runs pick up electrical noise that corrupts the signal. If your total strip length exceeds 5–10 m, install a signal amplifier at the midpoint.
5. Step 5 — Test before final fixing: Power on the driver and controller, run a test pattern, and verify every segment responds correctly. Check for dead segments, flickering, or colour inconsistency — these indicate connection issues, data signal problems, or a protocol mismatch between controller and strip IC type.
6. Step 6 — Seal connections and fit diffuser: Once tested, seal all solder joints and connectors with heat-shrink tubing (IP-rated heat-shrink for outdoor installations). Clip the diffuser cover into the aluminium profile. The diffuser further enhances the dot-free COB effect by blending any remaining segment boundaries into a completely uniform light line.
7. Step 7 — Programme effects and scenes: Configure your effects, colour zones, and scenes on the SPI controller. For DMX/Art-Net systems, patch the controller to the appropriate universe and assign channel addresses. Save your presets — most quality SPI controllers retain settings through power cycles.

Need help specifying the right controller, driver, and accessories for your project? Call the ATOM LED technical team on 01952 370028 (Monday to Friday, 9 am–5 pm) or email operations@atomled.co.uk with your project details.

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What wiring mistakes cause addressable strip to fail?

The most common cause of addressable strip failure in 2026 UK installations is incorrect data wiring — reversed data direction, wrong protocol selection on the controller, or data signal degradation over long runs. Power-related mistakes including using dimmable drivers, undersized cables, and series wiring are equally destructive but easier to diagnose. Every failure below is preventable with correct specification.

• Reversed data direction: SPI data flows one way — from DI (data in) to DO (data out). Connecting the controller to the DO end produces no response at all. Always check the directional arrows printed on the strip's PCB before wiring.
• Protocol mismatch: Each IC chip type (WS2811, WS2812B, WS2818, SK6812, HD107S) uses a specific SPI protocol. Setting the wrong protocol on the controller results in random colour output, flickering, or complete non-response. Confirm the IC type with ATOM LED before selecting your controller settings.
• Dimmable driver instead of non-dimmable: Addressable strip requires a non-dimmable constant voltage driver at 24 V DC. Dimmable drivers introduce voltage fluctuation that conflicts with IC chip timing, causing flicker, colour inaccuracy, and shortened IC lifespan.
• No power injection on long runs: Addressable COB strip draws current through the PCB traces from the power input end. Beyond approximately 5 m, voltage drop causes the far end to appear dimmer and shift colour. Inject additional 24 V DC power at 5 m intervals using parallel feeds from the same driver.
• Missing common ground: The SPI data ground must be connected to the same ground as the power supply. Without a shared ground reference, the data signal has no stable baseline and the controller cannot communicate reliably with the IC chips.
• Powering strip while coiled: Never test or run addressable strip while it is still on the reel. Heat builds up rapidly in a coiled state, damaging the adhesive layer, the IC chips, and creating a fire risk.
• Bare metal mounting without insulation: Mounting strip directly against uninsulated metal surfaces shorts the exposed PCB traces on the underside, destroying the strip and potentially the driver.

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How do you calculate the right power supply size for SPI COB strip?

Multiply the strip's rated watts per metre by total strip length to get total wattage, then add 20% headroom. For addressable RGB COB strip running all channels at full white (R+G+B at maximum), this is the peak draw. A 10 m run of 14.4 W/m strip needs 144 W base plus 20% headroom, so specify a driver rated at 175 W or above. Always use a non-dimmable constant voltage driver at 24 V DC.

Addressable strip has a variable current draw depending on what colours and brightness levels are active at any moment. All-white (RGB at 100%) is the maximum draw scenario. In practice, most dynamic colour effects use significantly less power than the theoretical maximum because not every segment runs at full brightness simultaneously.

However, always size the driver for worst-case full-white output. If your controller triggers an all-white scene on an undersized driver, the driver will either shut down on thermal protection, clip the output causing visible flickering, or fail prematurely from sustained overload.

For multi-run installations, the calculation scales:

• Single run, 5 m at 14.4 W/m: 72 W base, 86 W minimum driver (72 W + 20%).
• Two runs, 5 m each at 14.4 W/m: 144 W base, 173 W minimum driver.
• Four runs, 5 m each at 14.4 W/m: 288 W base, 346 W minimum driver.

For projects above 300 W total, consider splitting across two or more LED drivers to avoid single points of failure and reduce cable sizing requirements. All drivers must share a common ground for the SPI data signal to function correctly across the installation.

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Can you cut addressable COB strip to length?

Yes — ATOM LED addressable RGB COB strip features cut to length at marked intervals, allowing you to cut at designated cut points without voiding the 5-year warranty. Cut points are marked on the PCB at regular intervals, typically aligned with IC segment boundaries. Cutting between designated points will sever an IC circuit and disable the segments either side of the cut — always cut on the marked line.

After cutting, the remaining strip continues to function normally from the data-in end. The segment immediately before the cut becomes the new final segment in the data chain. Solder or use compatible COB strip connectors to reconnect cut sections — just maintain the correct data direction (DI to DO) when rejoining lengths.

Key points for cutting addressable strip in 2026 projects:

• Cut only at marked points: These align with IC segment boundaries — cutting elsewhere breaks the data chain and disables adjacent segments permanently.
• Sharp scissors or a craft knife: Make a single clean cut perpendicular to the strip. Angled or ragged cuts can damage adjacent solder pads and make reconnection difficult.
• Re-seal IP-rated strip after cutting: Cutting IP65 or IP67 strip breaks the silicone seal. Apply silicone end-caps or heat-shrink to restore the IP rating at cut ends before installing in damp or outdoor locations.
• Update your controller segment count: After cutting, reduce the total pixel/segment count in your controller settings — otherwise the controller sends data for segments that no longer exist, which can cause timing issues on some protocols.

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Why choose ATOM LED for addressable RGB COB strip?

ATOM LED supplies addressable RGB COB strip from UK stock at their Telford warehouse, backed by a 5-year warranty, free UK delivery, and a technical support team available Monday to Friday 9 am–5 pm. Unlike most UK suppliers who dropship from overseas, every order ships from Shropshire — reducing lead times and giving you a local team to call when you need specification advice on SPI protocols, controller pairing, or driver sizing.

• UK stock, not dropshipped: Your order dispatches from ATOM LED's Telford warehouse, not a third-party fulfilment centre in Asia — lead times are measured in days, not weeks.
• Cut technology: Cut at any marked point without voiding your 5-year warranty — standard across the addressable COB range.
• CRI 90+ on all COB strip: High colour rendering across the full range, including addressable RGB, ensures colours look accurate under the strip's light output — important for retail and hospitality applications.
• 5-year warranty: Covers all COB DC voltage strip including addressable variants — one of the longest warranty periods available from any UK LED strip supplier in 2026.
• Free UK delivery: No minimum order value — free delivery on every order, every time.
• Technical support included: Call 01952 370028 or email operations@atomled.co.uk for SPI controller pairing advice, driver calculations, wiring layouts, and specification reviews — no charge, no obligation.

Browse the full LED strip lights range or explore the complete dot-free COB LED strip collection to compare addressable, single-colour, and RGBW options side by side.

Cut to exact length before leaving Telford: we cut at the nearest pixel interval before dispatch. You get exact segment counts for your SPI controller programming — no mid-pixel cuts that disable downstream LEDs. Digital Pixel RGB, RGBW + 3000K, and RGBCCT all stocked in IP20, IP67, and IP68.

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Frequently asked questions — addressable digital RGB COB strip

1. What is the difference between addressable and non-addressable RGB COB strip?

• Addressable strip: Each segment has its own IC chip and can display a different colour independently — controlled via SPI data protocol from a dedicated pixel controller.
• Non-addressable strip: All LEDs change to the same colour simultaneously via standard PWM channels — simpler to install but unable to produce chase effects, colour-zoning, or pixel-mapped output.
• Choose addressable when your project requires moving effects, multiple colours along one strip, or integration with DMX/Art-Net lighting systems.

2. Can I use a standard RGB controller with addressable COB strip?

• No. Standard RGB controllers output three PWM channels — addressable strip requires SPI data protocol to communicate with each IC chip individually.
• Connecting a standard controller will produce no usable light output — the strip will either remain dark or display random flickering.
• Use a dedicated SPI pixel controller matched to the IC chip protocol on your chosen strip.

3. Do I need a dimmable or non-dimmable driver for addressable strip?

• Non-dimmable constant voltage driver only. The driver provides clean 24 V DC power — all brightness control happens through the SPI data signal from the pixel controller.
• Dimmable drivers cause flicker, colour shift, and premature IC failure because their PWM output conflicts with the IC chips' internal timing.
• Size the driver at 120% of your total strip wattage to allow adequate headroom.

4. How far can you run addressable RGB COB strip from one controller?

• Data signal distance: Most SPI IC chips support approximately 5–10 m of reliable data transmission per run before signal degradation causes colour errors or unresponsive segments.
• Power distance: Voltage drop on the 24 V DC power lines limits brightness consistency to approximately 5 m per single-end feed — inject additional power at 5 m intervals for longer runs.
• For runs beyond 10 m, use SPI signal amplifiers and multiple power injection points to maintain both data integrity and consistent brightness.

5. What IC chips are used in ATOM LED addressable COB strip?

• ATOM LED stocks addressable COB strip with IC types suitable for the most widely used SPI protocols in the UK market — confirm the specific IC chip for your chosen product on the product page or by calling 01952 370028.
• Common IC families include WS2811, WS2812B, WS2818, and SK6812 variants — each with slightly different data timing and capabilities.
• Always match your SPI pixel controller protocol setting to the exact IC chip on your strip — mismatched protocols produce no output or erratic colours.

6. Can addressable RGB COB strip produce white light?

• RGB produces a mixed white by running red, green, and blue at full output simultaneously — the result is a cold, violet-tinged white that looks noticeably artificial compared to a dedicated white LED.
• For clean white light, use RGBW COB strip which includes a dedicated white channel alongside the RGB LEDs.
• In mixed projects, pair addressable RGB in feature/effects areas with RGBW or single-colour white strip in task and ambient areas.

7. Is addressable COB strip suitable for outdoor use?

• Yes, in IP67 or higher ratings. IP67 addressable COB strip is suitable for garden features, facades, and covered outdoor areas exposed to UK weather.
• IP65 is not sufficient for permanent UK outdoor installations — it protects against surface splashes only, not sustained rain, frost, or humidity.
• Seal all cut ends and connections with IP-rated connectors and end-caps to maintain the Waterproof rating after installation.

8. How many pixels or segments per metre does addressable COB strip have?

• Segment density varies by product and IC chip type — typical addressable COB strips offer between 10 and 60 individually controllable segments per metre.
• Higher segment density produces finer, more detailed effects (smoother gradients, more precise colour-zoning) but requires a controller that supports higher pixel counts and more data bandwidth.
• Check the product specification on each ATOM LED product page for exact segment-per-metre counts for your chosen strip.

9. Can I connect addressable COB strip to a smart home system?

• Yes, via a compatible SPI controller that integrates with your smart home platform — many 2026 SPI controllers offer Wi-Fi, Bluetooth, or Zigbee connectivity alongside their SPI output.
• Direct connection to smart dimmers or smart switches will not work — the strip needs SPI data, not a dimmed mains or DC supply.
• For whole-home integration, use an Art-Net or DMX-capable SPI controller that your smart home hub can send commands to via network.

10. What is the refresh rate on addressable COB strip and why does it matter?

• Quality addressable COB strip typically operates at 1,000–2,000 Hz refresh rate, meaning the IC chips update colour and brightness data over a thousand times per second.
• High refresh rate prevents visible flicker on camera — critical for retail displays, broadcast environments, and any installation that will be filmed or photographed.
• Low refresh rate strips (below 400 Hz) show visible banding and flicker in video content, even if they appear flicker-free to the naked eye.

11. Do I need aluminium profiles for addressable COB strip?

• Strongly recommended for all addressable installations. The IC chips on addressable strip generate more heat than standard COB strip — aluminium profiles act as a heatsink, drawing heat away from the LEDs and ICs to extend operational life.
• Profiles also provide a clean mounting surface, protect the strip from physical damage, and house a diffuser that enhances the dot-free COB effect.
• Never mount on bare metal without insulation between the strip and surface — exposed PCB traces on the underside will short-circuit against uninsulated metal.

12. What happens if the SPI data signal is lost mid-strip?

• All segments downstream of the signal break will either freeze on their last received colour, display random colours, or go dark — depending on the IC chip type and its built-in failover behaviour.
• Segments before the break continue to operate normally because they have already received and processed their data before passing it along.
• To diagnose, check solder joints, connector pins, and data cable continuity at the point where working segments end and non-responsive segments begin.

13. How does voltage drop affect addressable COB strip?

• Voltage drop on the power lines causes segments at the far end of a run to appear dimmer and shift colour — reds and warm colours are affected first because they draw more current than blues and greens.
• Inject additional 24 V DC power every 5 m in parallel (not series) to maintain consistent brightness and colour accuracy across the full strip length.
• The data signal is not affected by power-line voltage drop — it travels on a separate low-current data wire — but the data signal has its own distance limitation of approximately 5–10 m per run.

14. Can I mix addressable and non-addressable strip on the same project?

• Yes, and it is common practice in 2026. Use addressable RGB COB for feature areas requiring dynamic effects and standard single-colour or RGBW for ambient/task lighting — all running on 24 V DC from the same driver infrastructure.
• Each strip type needs its own controller: SPI pixel controller for addressable, standard RGB/RGBW controller for non-addressable, and a compatible dimmer or driver for single-colour.
• Share the 24 V DC power supply across all strip types where practical — just ensure total wattage (with 20% headroom) does not exceed the driver's rated output.

15. What warranty does ATOM LED offer on addressable COB strip?

• 5-year warranty on all COB DC voltage strip including the addressable RGB range — one of the longest in the UK LED strip market as of 2026.
• Cut technology: Cutting at any marked cut point does not void the warranty — the 5-year coverage applies to every cut piece.
• Contact ATOM LED on 01952 370028 or operations@atomled.co.uk for warranty claims, technical support, or product specification queries — free support from the Telford-based team, Monday to Friday 9 am–5 pm.

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Ready to specify addressable RGB COB strip for your project?

ATOM LED supplies addressable digital RGB COB strip from UK stock with free delivery, a 5-year warranty, and technical support from a team that understands SPI protocols, controller pairing, and real-world installation. Whether you are specifying for a commercial fit-out, a residential feature, or a stage production, the ATOM LED team in Telford can help you get the specification right first time.

• Browse the range: Addressable Digital RGB COB Strip
• Choose your controller: SPI Pixel Controllers
• Select a driver: 24 V LED Drivers
• Call us: 01952 370028 (Monday–Friday, 9 am–5 pm)
• Email us: operations@atomled.co.uk

Free UK delivery on 97% of products. UK stock — dispatched from Telford, Shropshire. 5-year warranty on all COB DC voltage strip.

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Can you cut addressable digital COB strip to a custom length?

Addressable COB strip cuts at pixel boundaries — typically every 33.3mm (3 pixels per 100mm) on 30-pixel/m models or every 16.7mm on 60-pixel/m models. ATOM LED cuts to your specified length at the nearest pixel boundary before dispatch. A 3.8m gaming room ceiling run ships as one continuous piece with the data-out end left open for an optional extension. No charge, no minimum length. All three variants (RGB, RGBW + 3000K, RGBCCT) available in IP20, IP67, and IP68.

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Related Collections

• LED strip range
• SPI digital pixel controllers
• RGBW COB strip for zone colour control
• addressable pixel neon flex
• 24V constant voltage drivers
• running water SPI COB strip

Last reviewed: March 2026 — ATOM LED technical team, Telford, Shropshire. Specifications current as of 2026.

🏭 UK LED specialist, Telford, Shropshire  ·  ☎️ 01952 370028  ·  🚚 Free UK delivery on 97% of products