Questions tagged [rgb]

Short for: Red Green Blue. The primary colors in light. Mix them to create any imaginable visible color of light. Questions are typical in reference to RGB Leds, RGB Led drivers, and code related to mixing RGB light, but can include RGB Video Standard in VGA monitors.

Filter by
Sorted by
Tagged with
29
votes
4answers
7k views

Why are the three component LEDs in an RGB LED so unbalanced?

I was recently spec-ing some RGB LEDs for a project, when I noticed that the millicandela ratings on the three colors are rarely close to the same number. (i.e. 710mcd Red, 1250mcd Green, 240mcd Blue)....
9
votes
2answers
23k views

Hooking up multiple RGB LEDs while using a minimal number of PWM pins on an Arduino?

I currently have an anode RGB connected to the 11, 10, & 9 PWM pins on my arduino. However I would like to add 3 more LED's to my project, but I don't want to necessarily take up every single PWM ...
5
votes
3answers
3k views

Why must resistors be on the respective anode terminals instead of the common cathode terminal of a RGB LED?

Different from the best answer of this one: Why does a resistor need to be on the anode of an LED? But well, I'm also an electronics noob ^.^ Recently I bought the official Arduino starter kit and ...
8
votes
5answers
10k views

Is there a single IC that can control a 8x8 RGB LED Matrix

I was wondering if there was a single IC like the MAX6960 that could control a whole 8x8 RGB LED Matrix because the MAX6960 can only control a RGY.
2
votes
1answer
155 views

MOSFET always slightly on and other strange behaviour

I'm trying to control my RGB LED strip with my arduino, using IRLZ34N MOSFETs according to this schematic simulate this circuit – Schematic created using CircuitLab I tried it out, everything ...
5
votes
5answers
38k views

What resistor to use with this RGB LED?

i have this led, and im not sure what resistor to use to drop the 5v current to an appropriate voltage and produce the appropriate current. the LED is rated at 200mA, but the data sheet says i ...
9
votes
5answers
6k views

Red Green Blue LED

Do you need to use different resistors against each of the colours on an RGB LED?
3
votes
1answer
7k views

how to convert a Sync-on-green to VGA (seperate sync) signal?

I have a computer (VAXstation 3100/M76), that has a sync-on-green output: red --( green + sync --( blue --( I want to attach that to a standard ...
2
votes
2answers
8k views

LDR + RGB Led = Color sensor. How to calibrate it?

1$ color sensor. My adventures in electronics continue. While talking with a friend about colors, he told me about color sensors. Later I remembered the video where they sort smarties and so I ...
7
votes
3answers
4k views

POV globe speed questions

I am planning on creating a RGB LED POV globe only physically larger then that one. I am planning on using 64 RGB LEDs, requiring 3x pins per LED for a total of 192 outputs. Obviously I am going to ...
6
votes
1answer
1k views

RGB LED - Set intensity on Red and Blue

I've recently purchased SparkFun's starter arduino kit, which comes with a 4-legged RGB LED. If I understand correctly, this RGB LED should be able to access the full range of RGB colors, with 255 ...
3
votes
1answer
5k views

Read and decode .led file

I'm working on a flexible LED screen persisting of 20 meters of digital RGB LED strip with WS2811 IC for each LED. I want to control this using Arduino, which isn't a problem using FastSPI. My ...
1
vote
1answer
80 views

Please review my RGB Controller

First off, I just want to say that I'm still pretty new to PCB and schematics design, and electronics in general, so any suggestions on improvement are much appreciated! I'm creating a basic circuit ...
0
votes
1answer
226 views

A led mystery ? how to connect? [closed]

We have ordered from a supplier some high power leds - 20W RGB. They dont have any data sheet , and so we where thinking that we would try and find quickly how to ...
-1
votes
1answer
243 views

RGB LED and which drivers

I previously asked a question regarding 50W RGB multi chips and 50W warm white drivers. Here is the driver, a 50W RGB chip draws much lower amperage and compatible drivers usually max out at 650 ...
-1
votes
2answers
421 views

Driving RGB LED's on white LED driver?

Hello I have recently bought a driver for 50w white LED, I was wondering if it is possible to power 50W RGB LED chip via this driver? I know white LED has different amperage, my driver is for warm ...