Questions tagged [led-strip]

LED Strips come in two designs, both on Flex Printed Circuits (FPC). 1. Simple LED + Resistor versions, typically with multiple parallel segments of three LEDs with matching resistors. 2. Digitally controllable with embedded controllers. Data is wired in series while power is paralleled by segments or pixels. Both have different and similar application challenges.

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Is it possible to use a Shelly RGBW controller with SK6812 RGBW [closed]

I’m trying to figure out the best LED strip when using the Shelly RGBW. I have a SK6812 that I was hoping to use, but I’m not sure how to wire it up or if there is a way to configure it work with a ...
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LED strip lumen calculations

I built a vertical hydroponic farm for lettuce. I used 8W T5 LED fluorescent, but my lettuce did not grow well because the lights were not bright enough. I would like to use horticulture LED lights ...
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Using USB-C PD 12V to power LED strip?

My Philips Hue light strip 30W / 12V power supply died, and I'm looking to replace it. The OEM replacement is big and heavy; meanwhile there are GaN-based USB-C wall plugs, that can deliver 30W / 12V,...
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Calculating Multi-phase Buck Output Capacitance with WS2812b LED Strips as Load

EDIT: New info at the end based on more information I've found. I'm currently designing a fan/RGB controller for use in a pc that uses 12V from an 8pin PCIE connector as the input. The most ...
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Can I power RGB LED strips with only the positive charge from a battery?

I'm looking to make this really cool model that I can 3D print. I have the RGB LED strips that I need as they are extras from my gaming setup. The GOVEE LED lights have only a positive charge to them, ...
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4 answers
297 views

PWM LED strip dimmer induces noise in power supply

I've developed a PWM dimmer to dim 100W of LED strips. As I dim it to low PWM values, the power supply begins to hum. I have tried to use also higher PWM frequencies of up to 30kHz, but the problem ...
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How to prevent LED strip from flashing at full brightness when the ESP32 boots

I have a QtPy ESP32-S2 powered by USB, running CircuitPython. It hosts a single web page that allows setting the red, green, blue, and white values for a 12V RGBW strip. The pins A0 - A3 send PWM ...
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Driving an RGB LED Strip with an ESP8266

simulate this circuit – Schematic created using CircuitLab That's my circuit, although it's an RGB LED strip that I'm driving, rather than three individual LEDs. It works. I can PWM each channel ...
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CD4053B Triple 2:1 MUX/DEMUX For Switching Three LED Channels To Multiple Zones

My last post (Multi-Zone Addressable RGB+CCT LED Mode Switching) got closed as off-topic because I was “seeking recommendations for a specific product”... I found on my own what I believe to be the ...
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Can I have more voltage but ok wattage on a led strip? [duplicate]

I have 1.2 meters of a 12V 14.4 W/M LED strip, I also have a 64V power supply with 300mA, a.k.a an 18W power supply. My question is if the 64V could damage the 12V strip even though amperage is low ...
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Power injection LED strip: best method art instalation?

I'm building a modular art installation consisting of multiple 1 meter LED bars. From the power supply / microcontroller there are multiple lines consisting of 2 - 6 bars. The led strips I got need ...
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LED strip flickering at low brightness, using ESP8266, IRF510 MOSFETs and 12V power

I have a very simple circuit, where the ESP8266 controls a non-addressable 12V RGBW led strip. I works properly at normal and high brightness, but when I set the brightness to low, the LED strip ...
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Constant current power supply and 4 unique loads that I would like to individually control via PWM. Loads are to be driven at varying currents

I have a 1400ma constant current power supply (plenty of power to drive all loads at 100% duty), and I want to PWM 4 separate loads that are all driven optimally at either 350ma, 700ma, or 1400ma. The ...
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Building a simple USB notification light

I successfully used an Arduino with the FastLED library to operate my WS2812 Ring Light. For my next project, I want to create a notification light for my PC. Instead of using an arduino, I picked up ...
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Driving LED module using CC driver

I am using 3x10 COB LED along with CC driver that is 960 mA, 30-35 V and the connection type is series-parallel. Now the issue is if one of my string fails so will it add up to the remaining LED or no?...
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To power an arduino that isn't always on, should I connect a switch before or after a buck converter?

I am adding an RGBW led light bar to the rear hatch of my car. I control the brightness with an Arduino powered with a buck converter, which is connected to the car battery (via an always-hot line ...
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How to control 200 RGB LEDs (on a light strip, able to address individually)? [closed]

I want to make a grid of 10x20 RGB LEDs, and I think that RGB light strips might work. Can I power all of the LEDs (I'm not sure which kind I'll use but they won't be extremely bright) directly from ...
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Is it possible to connect a linear and a switched-mode power supply in parallel?

I'm working on a project and I need to power some RGB LED strips; three strips that need 12 V, 5 A each. The thing is that I have one switched-mode power supply of 12 V, 10 A and some 12 V, 5 A power ...
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Control LED strip with microcontroller using n-channel MOSFETs

I am struggling to set up the wiring for controlling a LED Strip using MOSFETs. I have seen a lot of different tutorials. According to this tutorial for example, source and gate are connected with a ...
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Are AO3400 MOSFETs good for my LED strip 'project'?

I read a lot about MOSFETs, but since I do not have much electronic background most official 'notes' are quite above my knowledge. So I hope someone can beware me of making some trivial mistakes. Why ...
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How to control an LED strip with RaspberryPi/ESP32 using N-channel MOSFETs?

I am trying to control my LED-strip with N-channel MOSFETs. The problem is it won't turn off after removing the current from the hate. More details below. I bought these MOSFETs, and am currently ...
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How to auto-manage wires in Proteus?

The problem I am having is that I created a schematic of a game that uses shift registers to drive LEDs, and in that game, you need to on-and-off the data line back-and-forth in order to display a ...
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Powering 12 V LED strip from a 3.3 V esp32 including PWM

I'm developing an automation board and want the facility to PWM dim a strip of LEDs up to 5-10 amps @12 V. These are plain 2 wire LED strips, positive and negative, nothing special. My esp32 will be ...
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Is my LED strip broken?

I'm attempting my first ever electronics project, trying to do what's in this video. I have: A WS2812B LED strip (60 LEDs/m), 5V An Alitov 5V 15A power supply An Arduino Nano Some little corner ...
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Microcontroller MOSFET-driven RGB LED strip controller

I'm trying to DIY a very simple RGB strip controller, nothing fancy. The goal is that it has to be driven from a 3.3 V / 5 V microcontroller output, using some N-channel MOSFETs. I will control them ...
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Ways to Control RGBW LED Strip

There are these RGB & RGBW LED strips with a common anode (V+) input that I want to control. In the past, I've built circuits around the AL8861Y-13 LED driver IC that can control RGBW LEDS if all ...
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LED Driver Advice Reqd

I'm looking to put LED strips into my converted van. Using some before, it wasn't long before they dimmed or individual leds failed. I was told it was because automotive voltage, especially on newer ...
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2 answers
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Connecting 12 V led strips to 48 V PSU in series

I have 4 led strips of 12 V, I want to connect them to a 48 V PSU, is the schematic bellow correct? Can I connect them in series? Or do I have to connect them using a step down buck to 12 V? Thanks.
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Why is my calculated wire size a lot bigger than the traces on my LED strip?

I've 3D printed a nanoleaf assembly which will have WS2812B LED strips in them. I'm calculating the correct wire size but my result seems off. I have 14 hexagonal parts which have sides of 10 cm. I ...
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Flashing random LEDs when multiple wires fished through hole

I've been building a large, 3D printed dodecahedron infinity mirror. Prior to adding the polycarbonate pentagons with mirror film applied, the LEDs worked perfectly in the frame. Once I fished the ...
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Is it safe to attach COB LED light strips to a desk with a metal frame?

I am kind of new to electronics, and I wanted to make sure that I am not doing something dumb. My SO and I work on one big desk, 177 inches / 4.5 meters long. It has a metal frame and a MDF desktop. ...
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2 votes
1 answer
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Can't read power from this product description (10W + 10W notation)

Here is the product in question: https://www.ledbe.com/24v-cob-tunable-white-led-strip My question is: what does it mean by Output Power: 5W+5W, 10W+10W, 15W+15W? ...
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Did I burn out the data pin on my LEDs?

I had my 500 WS2812Bs working. Power injection all along and they were working good for the most part. They had a little flicker when they turned white so I was adding the recommended resistor and ...
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Using constant current and constant voltage power supply with LED strips

I have a Meanwell 12V power supply (ELG-200-12) which is constant voltage and constant current. Note 2: I want to power t one 5 meter 12V LED strip that consume 11.52W/m with it. The specifications ...
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PCB design review request: ESP32 as LED strip controller

I'm trying to create my very first PCB and before wasting my money on ordering non-functional PCB, I'd like to ask your advice. Background: I have WS2815 LED strip, controlled by ESP32 which uses two ...
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LT3965 Octal Bypass Switch

I have 10 strings of LEDs, string 1 to string 6 have 4 LEDs in series, S7 and S8 have 3 LEDs in series, and S9, S10 have 6 LEDs in series. Each LED has a forward voltage of 3.2 V on average. I'm going ...
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AL5873QT16E-13 LED driver

I have a requirement wherein strings of LEDs need to be driven with a maximum forward current of 250 mA, and the dimming should be analog, not PWM. I have chosen AL5873QT16E-13 which has 3 channels ...
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2 votes
1 answer
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Computer PSU tripping as Bench Power Supply

I am currently attempting to construct a bench power supply using an old PC PSU (350W) and having some issues. I have managed to set up a basic standby and power on led's, an on/off switch and a dummy ...
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Running 3-4 red LEDs on 3xAAA batteries efficiently

I have one of these generic Motion Sensor LED Night (example) and I modified it to stay on all night on a much dimmer light. It lasts about 150 hours the way it is now (I just disconnected the IR ...
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Designing UVC LEDs strip using WS2811 LED driver IC

I'm designing a UVC LEDs strip using WS2811 LED driver ICs. I'm using the Vishay UVC emitting diodes [3] having the forward voltage of 6.8 V and the radiant power typically 2.5 mW at 20 mA. I used one ...
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2 votes
3 answers
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How do bicolor LEDs switch colors?

I recently purchased a decorative light with two different bicolor LEDs connected in alternating series fashion. It has red/green and red/blue LEDs connected in alternating series On the driver side ...
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3 answers
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Over 12V output on a 5V power supply? [closed]

I recently bought two 40A, 5V power supplies (Letour) for 990 WS2812B LEDs. Each LED strip (3.3 of them total) is rated for 5V, 20A each. However, when I tested the voltage of both power supplies they ...
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I'm trying to find out the voltage of my TV LEDs as I wish to replace them [closed]

I have a seven LED strip from a 32" Soniq TV. The strip's model number is E340369 and I want to find out its voltage. Could someone please help as I don't have a multimeter to test.
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Determining an Output Capacitor Value for LED Driver

I'm designing a buck LED circuit using a LED2000PUR (Data sheet). The issue that I am having is that the LED I'm designing for doesn't have a data sheet, and I need to determine the dynamic resistance ...
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Connectors on ARGB strip confuse me

I am looking for a nice ARGB strip for a project of mine. I am quite familiar with the 3 pads concept for ground, data and power, but a lot of the strips that I'm looking into buying have multiple ...
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Correct "correlated" voltage tuning for (multiple) LED

I need to tune the voltage between 6 LED drivers (Meanwell hlg-320h-36ab) that delivers 36Vdc and a LED that can take 30-41Vdc 250w for each of its 6 strips (total 1500w). This will change the color ...
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How to maintain a stable DC current in case of intermittent disconnections

Aplogies if the question sounds very basic. I have a set of LED strips which are powered by a 12v 5A LED driver (which is plugged to my wall socket 220V AC). As the intermidiate connection between the ...
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1 vote
1 answer
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4x 12V LED strips in parallel with dimmers on 8xAA batteries?

I've built a play kitchen for my kids and would like to make the stove and oven light up. It's been a long time since I've done electronic tinkering so wanted to check I've done my homework right. The ...
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What is the best LED driver to use for this setup - Help with WS2815 data amp over long lines

Currently have 5 m WS2815 strips installed running from 18 AWG wiring connected to 12 VDC Meanwell power supplies and our controllers (SP108,SP102,SP608), power injection on all lines. When we tested ...
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Heat concerns using 12/14 AWG wire for 30A 5V DC power over shorter distances?

I’m hoping for some advice on wire gauges in practice with respect to heat/safety. I am planning an LED strip setup and have created the following diagram: The setup is designed to be modular, A ...
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