Hi guys, newbie here :slight_smile: I've read in some well-respected tutorials (like the one from the sparkfun starter kit) that you should put the resistor on the short (-) lead; some others put it on the long (+) one (like this one ). If I understand correctly, a diode only allows current to flow…

Resistance and LED: on the anode or on the cathode?

leon_heller September 20, 2012, 7:51pm 4

The resistor and LED are in series, and the same current will flow through both of them.

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