Willen
Well-Known Member
Talking about Arduino UNO, some UNO has built-in LED (L LED permanently connected to 13th pin) in the board and dafault 'blink' program use it to blink the LED. But during other projects, many programs uses same 13th pin for other type of signal out. In this time, the signal has a 1k and a LED always in parallel. Won't the parallel LED affact different types of signal comming out from the 13th pin?
(Additional: Some Chinese clone (CH34) UNOs has no such L LED, just has empty pads on boards.)
(Additional: Some Chinese clone (CH34) UNOs has no such L LED, just has empty pads on boards.)