Automatic LED Display

[wmyatthu]

Hi

I want to build a LED Display that automatically change one color to another. I will use Red, Green and Blue LEDs. I want to do it in following orders: Red, Red+Green, Green, Green+Blue, Blue, Blue+Red. So the display will rotate in that order. Any one has experience in this type of LED Display. And ideas and tutorials please! Thanks.

 

[Azka]

I think u should use microcontroller to do that like PIC

 

[wmyatthu]

Yes. I will use PWM control of PIC16F628. Any one has such an experience, plz share me. Thanks.

 

[blueroomelectronics]

The 16F628A has only 1 PWM channel. But it's easy to do in software.

 

[alexz]

Assuming you are talking about High Power LEDs.
You would need 4 channels of PWMs to drive and dim the 4 LEDs R/G/B/W.
You would also need 4 channels of high current LED drivers.
NEC Electronics has just released a new microcontroller which has everything you need on-chip. And a low cost starter kit is also available.
**broken link removed**