Short for: Red Green Blue. The primary colors in light. Mix them to create any imaginable visible color of light.
3
votes
4answers
153 views
Voltage regulator too hot to touch [duplicate]
I'm working on an RGB LED project. I'm using this as the power supply: https://www.sparkfun.com/products/114
It uses an LM317 which according to the data sheet can supply up to 1.5A. The LED's I'm ...
2
votes
0answers
38 views
Digital RGB interface EMI filtering
Consider the following system:
where:
The motherboard contains a LCD controller (SSD1963 from Solomon Systech) and other components (application processor, solenoid drivers, power supplies, etc.)
...
0
votes
3answers
122 views
Inexpensive programmable RGB LED driver/IC/solution?
My desire is to have a simple setup with a dial device (ideal would be a 3 click dial with 3 distinct settings but an analog dial would also be appropriate) whereby position 1 would display a color ...
1
vote
1answer
58 views
What value resistors should I use for this LED?
I'm trying to figure out the actual value resistance I need for the RGB LED I bought from here: http://www.adafruit.com/products/314#Description
According to most of the online calculators, for the ...
1
vote
1answer
125 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 ...
0
votes
2answers
275 views
coding using Arduino, two 74HC595 and two RGB LED, problems with shifting out database
the whole point of this was to be able to send 8 bits of color code to 2 rgb leds through 2 74hc595 registers. if i can get the default color for each led to be sent out then the next part of code is ...
0
votes
3answers
134 views
RGB LED Diffuser
I have come across different techniques for diffusing colors. I found Fresnel Lens can be use for diffusing RGB led colors.Is it worth using it or not. I have tested transparent plastic and some ...
4
votes
1answer
97 views
RGB and SRGB difference and their use
I am working on a project which include displaying RGB colors. I would like to know what is the difference between RGB and SRGB. Is it possible to have srgb colors in led. As SRGB has been used for ...
1
vote
1answer
62 views
LED holder modification
I'm working on a project where I will be using a bunch of RGB LED's. I bought a quantity of this style of LED holders:
https://www.sparkfun.com/products/11147
The way they work is you slide the ...
-1
votes
1answer
111 views
LED RGBW Lighting, Will this Design work?
I've got this schematic for a very small lighting setup for my basement. The goal is to have two fixtures that have red, green, and blue lights that can be controlled with knobs on a Separate ...
0
votes
1answer
161 views
Converting DisplayPort to 24 bit RGB parallel. Possible?
Is it possible to interface a DP1.1 complaint source to a TFT Module that uses 24 bit RGB? I'm investigating the possibility of interfacing an Atom D2550 with This Display.
I have 3 options to ...
4
votes
2answers
296 views
Small, cheap, and simple driver for 16 RGB LEDs
I am working on a board design that will put 16 RGB LEDs in a circle around a rotary encoder. I want this setup to be simple so that I can run it from any micro with limited software (ie. built in PWM ...
1
vote
1answer
115 views
RGB led each color on at a specific voltage
My set up is a small solar panel(10W) charges battery's in my camper, the old led showing that it was charging no longer works, The old led had epoxy around it with 3 diodes in it as well,being a ...
0
votes
1answer
474 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 ...
4
votes
2answers
638 views
Fading RGB led with ATtiny2313 timer
I'm trying to make mood lamp with only hardware PWM and interrupts (i. e. main loop should be empty). I'm doing it as a challenge to learn how timers work, not for any practical reason. So far I've ...
6
votes
1answer
197 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 ...
1
vote
3answers
401 views
RGB LED - Fade Between Random Colors
I am trying to generate a random color RGB value -> light up RGB led -> wait for 5 minutes -> generate next random color -> fade from old color to new color.
For showing the color on LED I am using ...
0
votes
2answers
197 views
Anode RGB LED Arduino Hookup Confusion
I'm having a really hard time getting this RGB Led working with my arduino. First i'll describe my setup (schematic) , and then i'll show you the code I have.
I have 5 volts going into the second pin ...
1
vote
3answers
588 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 ...
2
votes
1answer
372 views
Choosing between RGB LED types
I am building a POV LED Globe using ~200 RGB LEDs.
I have three different types I am looking at and have no experience with:
5mm RGB LEDs - Diffused (example)
5mm Straw Hat RGB LEDs - Water Clear ...
0
votes
0answers
41 views
What are appropriate driver chips to drive a 16x16 RGB LED display using the I2C pins from a Raspberry Pi [duplicate]
Possible Duplicate:
20x20 RGB LED Matrix controller project
I am trying to make a 16x16 RGB LED display using multiplexing and I2C to drive them. I can't seem to find a good matrix driver ...
4
votes
2answers
320 views
Powering RGB LED's and using a PWM chip; series or parallel?
I'm working on a hobby project where I will be using an Arduino board and a TLC 5940 to control 5 different groups of RGB LED's. The number of LED's in any particular group will not necessarily match ...
0
votes
1answer
309 views
7-color RGB LED Help
I bought a 3 legged Blinking (I have a theory this might be my problem) RGB LED from Radio Shack. I am not quite sure on how to code my arduino to make it emit one solid color constantly.
The closest ...
8
votes
2answers
728 views
Controlling an RGB LED color range from an analog temperature sensor (no Arduino, etc.)
I'd like to combine an analog temperature sensor with an RGB LED so that I get a range of colors based on temperature. Low temperature blue, high temperature red, with color fade between them as the ...
1
vote
2answers
209 views
RGB LED lighting controller
I am after an RGB controller or amp capable of powering 8 x strips of the RGB lights that come on 5 meter reels, which are 36W each.
The problem T have is the client has supplied the lights which come ...
3
votes
4answers
241 views
Painting Rainbows
I was painting my 2 year old's daughter's bedroom yesterday, she handed me a paint brush and asked me to paint her a rainbow.
I could paint her a rainbow, using paint, but I don't have many colour ...
1
vote
2answers
554 views
How to run 25 RGB LEDs by an arduino Duemilanove
I am constructing a 5x5 LED grid that has an RGB LED under a plastic cover, and a piezo sensor that changes the RGB LED to one of 8 colors when pressed.
So as far as I can tell I need 75 outputs ...
1
vote
2answers
831 views
ATtiny25 PWM LED driver with brightness control
I'll be building a piece of RGB LED jewelry for my beloved one for the holidays. It's basically a pair of earphones with one or two RGB LEDs on each, with a small ATtiny25-based PWM driver in a small ...
1
vote
3answers
813 views
Blending RGB LED colors together
Although this question is more of an optics than electronics, it strongly involves LEDs so I think it is a good idea to post it here.
I have a simple 3W, RGB LED with a 5deg lens. Everything is ...
0
votes
2answers
248 views
Glowing pressure plate
I need to build a pressure plate to go on the front of a prop to be used in Airsoft.
The idea is this plate is both an target to be shot at and a visual representation of "health".
My initial ...
14
votes
1answer
1k views
What makes a good RGB LED
I am looking for supplier for RGB LEDs for an upcoming project RGB POV LED Globe. Normally I would go to my local electronics supply story, but this project requires lots (~1000) of LEDs and my local ...
5
votes
3answers
2k 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 ...
0
votes
3answers
436 views
Do RGB LEDs actually behave like three separate LEDs?
I am trying to operate a lot of RGB LEDs for a project. I came up with a crazy scheme which only works if the RGBs work exactly as three separate LEDs.
What I want to do is connect the R, G and B ...
2
votes
1answer
887 views
Arduino, RGB LED, BlinkM MaxM controller
I'm a student from QUT doing interaction design this semester (you've probably heard from a few of us over the past few months). Anyway I just order the 25 diffused RGB Leds if that rings a bell for ...
3
votes
1answer
156 views
Colour correcting RGB LEDs - possibly with science
I have some RGB LEDs (eBay - no datasheet, 4 pin, common cathode, 5mm). I am colourblind.
I'd like to create a palette of colours which appear distinctly for most people's eyes, perhaps 16 colours or ...
7
votes
5answers
978 views
Red Green Blue LED
Do you need to use different resistors against each of the colours on an RGB LED?
6
votes
5answers
2k 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.
