Mixing different colored LEDs in series-parallel arrays
I've been doing lots of research, both on other internet sites and the LED projects posted here, but can't find out how to mix colours in LED displays.
My plan is to build better Christmas displays from LEDs than the rope light ones you can buy. I've found out how to drive LEDs from a power supply both in series and parallel, with a current limiting resistor. What no one seems to discuss though is driving sets of LEDs off the one power supply where they use different coloured LEDs of different voltages.
If I want to wire up lots of red LEDs (2.0V drop) in series and some green LEDs (3.3V drop) in series for example, can I just wire the two sets in parallel to each other (assuming both sets of LEDs in series don't require more voltage than the power supply?