Let's Make Robots!

Putting 5 volts on a LED

Putting 5 volts on a LED

I have a couple of LED's installed but when used with a resistor the light intensity is not that good (ultrabright LEDs). If I loose the resistor and hook it up to 5 volts it's great (and so far working). I guess I'm just drastically reducing the lifespan of the LED. Anyone a clue how long they will hold this way? Or of any other consequence?

Thanks!