thatoneguy
- Joined Feb 19, 2009
- 6,359
Yes, you should have a resistor to limit the 20mA for each LED (R,G,B). What is perfect for one may give too much current to another.
LED series parallel array wizard
That is a useful tool, there are many like it on the net, but most give some very wrong answers.
LED series parallel array wizard
That is a useful tool, there are many like it on the net, but most give some very wrong answers.