I would like to build a fancy chandelier that floats over our dining room table, made of LED lights, perhaps each LED light suspended by its own wire to make the whole thing like a flattened cube.
Anyone has any suggestion wrt the controlling circuit? I'd like to change the intensity of the lights, and turn them on/off based on some patterns.
One thought is to have the lights controlled from an old laptop that I have through its serial interface to the controlling circuit and supply it with a matrix of data, so that if there are 10x7x4 LEDs the matrix will look like:
v(0,0,0) = 0
v(0,0,1) = 2
v(0,0,2) = 1
...
v(10,7,3) = 3
v(10,7,4) = 0
Where do I get that many LEDs for cheap?
Anyone has any suggestion wrt the controlling circuit? I'd like to change the intensity of the lights, and turn them on/off based on some patterns.
One thought is to have the lights controlled from an old laptop that I have through its serial interface to the controlling circuit and supply it with a matrix of data, so that if there are 10x7x4 LEDs the matrix will look like:
v(0,0,0) = 0
v(0,0,1) = 2
v(0,0,2) = 1
...
v(10,7,3) = 3
v(10,7,4) = 0
Where do I get that many LEDs for cheap?
Hi,
Ebay would be your best bet.
We made a list recently of reliable sellers of hobby stuff. Can't remember the thread off the top of my head though
Cheers!
Jamh said:Where do I get that many LEDs for cheap?
Ebay would be your best bet.
We made a list recently of reliable sellers of hobby stuff. Can't remember the thread off the top of my head though
Cheers!
I'd probably set up four matrix driver boards, one for each 10 x 7 matrix. Then wire the LEDs so that they are addressed by specific row and column drivers. You PC program will have to address the four matrices (your z coordinate) and the specific LEDs you want turned on/off (your x, y coordinates).
I would use PICs for the matrix drivers, unless there is an off-the-shelf LED matrix driver that can do the job, and there probably is if you search long enough.
There's going to be a LOT of wiring to address that many LEDs.
I_F
I would use PICs for the matrix drivers, unless there is an off-the-shelf LED matrix driver that can do the job, and there probably is if you search long enough.
There's going to be a LOT of wiring to address that many LEDs.
I_F
Jamh said:
That's a bit dated! You can definitely do better with modern parts. Use high pin count PICs or smaller PICs plus power shift register chips such as the TPIC6C596.
I think you can drive a 10x7 array of LEDs using a PIC with 28 pins, but there are some thermal considerations that limit the number of LEDs can be on at the same time.
I_F
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