Resistor Values for LED's

[peAk]

Very cool Dave!

[guile]

Just a bunch of random bits gathering dust thrown together into something useful. Idea was put forward by Mark Hammer over at diysb.
dave

Well... Could you throw that together again?

[muddyfox]

i do it on a small breadboard. A led, followed by a 1k followed by a 100kB pot. insert led, twist pot till desired led brightness, measure pot, add 1k
i have a tiny breadboad dedicated to this, with two pots so that i can judge the brightness of two separate leds at the same time (because sometimes even leds from the same batch are sufficiently different in output). not fancy but very efficient and easy to put together and use.