Just making sure I won't blow out my LEDs, I used this site to figure resistors. I went to the series calculator and I figured I could run 6 LED's on a series without a resistor, at least that's what the calculator said. My LED specs have this: (Foward Voltage: 2) - (LED Current: 20mA)
Is that right?
Another question: when using a parallel circuit, do I put the resistor on before it hits any LEDs, so the resistor would be the first thing the electrons hit?
Last minor question: what's the difference between +12v and -12v?