Hey guys new to arduino but got a general knowledge of electronics. I came upon a instructables not to long ago showcasing something called a lampduino, basically just an 8v8 64 RGB LED matrix. The instructables is here: http://www.instructables.com/id/Lampduino-an-8x8-RGB-Floor-Lamp/
Anyways I wanted to do something similar but for my coffee table. It would have to be rectangular so my question is on that instructables it is an 8x8, am I able to do a 6x10? Would it be wired the same? In the guide it says I can have a max of 64 leds, what would I do if I wanted to do 128 leds instead? Just looking for some general guidance, it says to use a colorduino, can I just buy that or do i need an arduino aswell to go with it? Also how do I wire these? In series, parallell or?
So basically you want to make this RGB Dot Matrix into a table? Sounds doable. And you are in luck, because you can wire multiple matrices together and there is an easy to use library.
Option one: Arduino Playground - LEDMatrix
Option two: Google Code Archive - Long-term storage for Google Code Project Hosting.
Wiring diagram: http://www.instructables.com/id/16x8-LED-dot-matrix-with-MAX7219-module/
Yes something like that but I was wondering if it had to be 8x8 or if I could do 6x10? Also It says I can use a max of 64 leds, how would I go about being able to use 128 leds?
Yes something like that but I was wondering if it had to be 8x8 or if I could do 6x10? Also It says I can use a max of 64 leds, how would I go about being able to use 128 leds?
A single driver (MAX7219 module) can control 64 LEDs, to add more, you need another chip and cascade the two, as done in the wiring diagram. ( See the yellow line going from the first driver to the second)
I'm looking to use signle rgb leds and not a bunch of the matrix modules. basically just like this http://www.instructables.com/id/Lampduino-an-8x8-RGB-Floor-Lamp/
The module was just an example to show the 64 LEDs. You can use individual LEDs, just make sure your wiring is correct.
how would i wire the rgb leds?
Matrix wiring: http://www.logiccircuit.org/images/LEDMatrix0.jpg
This is the driver you can use if you don't want to get the individual chips:
*Note this only controls 64 LEDs, so two of these will be needed.
That matrix schematic seems very confusing, from what I can tell each row is wired seperately?
what about the common pin on the led? Leds are 4 pins and this diagramn only shows the RGB pins. and I dont understand why the 1-8 rows connect to every pin in that 1 row?
8x8 is really 24x8 with RGB LEDs, or 8x24.
Easy way is to have common cathode RGB LEDs.
Have 24 anode source drivers and 8 common cathode sink drivers.
I have a board with 96 channels of 24mA drivers and 9 current sinks (was designed for a 9x9x9 LED cube, with an extra shift register added for other uses).
Could use that to make up to 32x9 RGB matrix, with LEDs physically arranged however you'd like. Add 3 more N-channel MOSFETS (unused IO of the cathode shift registers are broken out to pads), and it can be a 32x16 RGB matrix.
See my recent topic 9x9x9 LED cube for a picture of the card from an odd angle, and the recent topic 8x8x8 LED cube for a better picture and schematic.
(I'd look them up, but IE8 crashes on me when I try - and no permissions to install another browser).
Thanks - I can't see to be able to attach pictures either!
The 8x8x8 topic has a better pic and a large (not for forum viewing) schematic if interested.
Correct me if I am wrong but from what I got from the diagram is
THE VERTICAL ROWS (26,25,24,23,10,9,8,7) are where I would use the common anode on the led correct? and then the horizontal rows are connected downwards to each led, red with red blue with blue then green to green?
Is that correct?
If your looking at my wiring diagram, all the pins at the top are common cathode, so all the RED LEDs in column 9 are tied together by their cathodes. Blue...Green...
vertical are common anodes?
