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Topic: LED RGB 64-control individually (Read 14 times) previous topic - next topic

Omnimusha

Hi, I need to individually control 64 RGB LED, intensity, on / off and range or palette the colors

I have sought information and I met this 16-channel Multiplexer 74HC4067.

  74hc4067 Multiplexer, I allow only the ignition internal / off the LEDs? Will I be able to just change the color scheme?, or will I need also the ULN2803, to change the color palette?

coneciones my diagram here, do me a favor and put two hechele a mirada.solo 74hc4067 Multiplexer for the case
The procedure is repeated.





CrossRoads

Look at TLC5940, 16 channel (so 5 RGB LEDs)
http://www.ti.com/product/tlc5940
Can do the color pallette with individual control of PWM per channel.
Another option is WS2803, an 18 channel driver with PWM control per channel.
Possible link to datasheet:
www.world-semi.com/en/Driver/Lighting_LED_driver.../WS2803/
and a forum discussion
http://arduino.cc/forum/index.php/topic,89104.0.html

I think you can find Arduino libraries for each.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Riva

I would also suggest the WS2803, on eBay you can pick them up for a little over a pound ($1.50) each in small quantities and even less for larger 25+ numbers. They work well and daisy chain together without problem.

Omnimusha

thanks for your help.
that the difference between the WS2803 and WS2801?
I can not find info on how to connect in cascade.

  the WS2801 to sparkfun is at $ 0.75 dollars.https://www.sparkfun.com/products/10444
library as well as for the WS2803 and WS2801. https://github.com/adafruit/Adafruit-WS2801-Library

Riva

Quote
that the difference between the WS2803 and WS2801?

The WS2801 is only 3 channels per chip (1 RGB LED per chip) and the WS2803 is 18 channels (6 RGB LED's per chip).

Quote
I can not find info on how to connect in cascade.

Connect arduino to SDI & CKI of first chip then just connect SDO & CKO of this chip to SDI & CKI of next chip and so on.

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