I'm trying to blend RGB to make other colors, so I was under the (wrong) impression that all the colors can be turned on at the same time with each one being able to dim independently. I tried connecting a power source with all three colors in parallel. It seems like R G B is prioritized, so only one color can be on at a time. Any way to turn all colors on at once? Looks like a standard emitter with R+, G+, B+, and -. I bought 10 for $16 from china.
Hi,Adafruit has a nice tutorial for a lot of arduino stuff including RGB-leds.http://learn.adafruit.com/adafruit-arduino-lesson-3-rgb-ledshttp://learn.adafruit.com/adafruit-arduino-lesson-7-make-an-rgb-led-faderArduino boards are quite popular by the way, googling Arduino +component (and perhaps "tutorial") often shows tons of results.
Anyways, I figure out that if I activate each one color at a time without delay, then they are pretty much all on at once.
I still have a big problem controlling them with tlc5940 because it is (-) in LED (+) out, therefore I cannot use it to control high current transistors
They are not connected directly to the Arduino. They are using TIP122 transistors which should be able to handle at least one LED. Also, for testing purpose, I am supplying just one of them with something like this:http://www.ebay.com/itm/30V-5A-110V-Precision-Variable-DC-Power-Supply-w-Clip-Cable-Digital-Adjustable-/321214987873?pt=LH_DefaultDomain_0&hash=item4ac9e7be61