Do you need a resistor to power more than 1 LED?

The title says it all.

If you put the LEDs in series, no, you only need one resistor per chain.
framistan6 years ago
without the resistor, you will burn out the LED. The LED will make ONE blink... and thats the last light it will ever put out. There are lots of instructables for using LED's. Just do a search on that subject.
lemonie6 years ago

No, or yes, or maybe.
What have you got, what do you want to do?

L


aelias366 years ago
Yes. Yes you do. Here's a nice website to find out which ones:

http://led.linear1.org/led.wiz