On the spaceship project there are 3 output jumpers connecting the led lights.
I noticed there wasn't a resister placed before any of them.
On the introductory video there was a resister between the power and the led so it wouldn't over heat. It wasn't using an output pin but was directly connect to the 5V power source.
My questions is do the pins on the arduino board control the resistance.
I am very new. I haven't even done one project however I did run the on board blink sample.