Re: [beagleboard] Re: driving 48 RGB LEDs on BBB

2014-06-23 Thread lynton . reed
This below from the ws2801 datasheet , I think this means they can be up to 6 meters apart. ? The Connection and Driving of Cascading Operation The transmit the data over long distance by cascading, the WS2801 integrates push-pull output stage with strong driving capability which enables the

[beagleboard] Re: driving 48 RGB LEDs on BBB

2014-06-22 Thread lynton . reed
thanks for that advise I hadn't realized those strips had pwm drivers in them already, this looks like a much easier approach. looking at these now 12mm Diffused Thin Digital RGB LED Pixels (Strand of 25) https://www.adafruit.com/product/322 Only thing is I need each LED to be about 2 meters

Re: [beagleboard] Re: driving 48 RGB LEDs on BBB

2014-06-22 Thread lynton . reed
These is a data sheet for the WS2801 http://www.adafruit.com/datasheets/WS2801.pdf But what should I be looking for ? I found some cheap alternatives on ebay from hong kong which have 50 pieces for only $30

[beagleboard] driving 48 RGB LEDs on BBB

2014-06-19 Thread lynton . reed
Hi, I am programmer and new to electonics and BBB, so please be gentle with me :) I have a project that involves controlling 48 RGB LEDS and want to be able to control color and brightness and animation of the LEDs based on other sensory inputs. eg changing colors, brightness and patterns