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Jul 12, 2018 at 15:06 comment added aaa I believe LEDs do not need an resistor if you have other means of limiting current or voltage.
Jul 12, 2018 at 14:24 history edited sa_leinad CC BY-SA 4.0
Corrected the English :)
Feb 12, 2014 at 19:41 comment added apnorton Something that could be attached to bullet point 4: Yes, LEDs need resistors. :) This has to be the most common Arduino mess-up ever.
Feb 12, 2014 at 7:48 review First posts
Feb 13, 2014 at 17:01
Feb 12, 2014 at 7:33 history answered Klaus-Dieter Warzecha CC BY-SA 3.0