how much did it cost you?

and again, could I wire up 2 leds together on the same servo extension? yes or no. I calculated it out, and I could run the leds separately on individual ports. tight squeeze though. don't have enough servo extensions is why I wanted to fit 2 leds on one.

Very little, $2-3 at most I'd guess.

where is a good spot to get the parts? I was thinking ebay, but that would be a pain with shipping and everything else. not in an area with very good electronic shops. I believe online is the only place I could find those parts.

ok. so. I have found everything I need but the strip board on ebay. totals up to $10 with shipping included. again, that doesn't have the strip board included. any idea on where to get the strip board?

You can do it all inline without stripboard.

$10 seems pretty high for a TIP120/TIP122 and a resistor though.

Without stripboard; Solder the resistor directly to the base of the transistor Solder the white signal wire to the other side of the resistor Solder the black ground wire directly to the emitter Solder the red wire to the anodes of the LEDs Solder a black wire between the cathodes of the LEDs and the collector

Use heat shrink to keep it nice and neat and free from shorts.

ok thanks. i don't know. i'm looking at my options right now. i could connect the leds to the ezb using servo extensions on individual ports. i counted and i have enough space. what do you think?

That's how I plan to do mine