Just what the subject says... Resistance doesn't matter; I've got a ton of resistors, but should I use one at each anode or just put a single one at the common cathode?
You should use one for each LED, it does work with a single resistor but the brightness of the display varies markedly depending on the number of segments lit.
Rob
Strange, it doesn't seem to... perhaps this display is internally compensated for that or something? I'm a little confused.
Are you saying that with a resistor on the CC and 5v on any anode you don't get a lit segment?
Or is it that your program is not working?
Rob
I'm saying it works perfectly, and there's no noticeable dimming with different numbers of segments lit.
I'm saying it works perfectly, and there's no noticeable dimming with different numbers of segments lit.
Write a sketch that slowly alternates between the display of a '1' (2 segments) and the display of an '8' (7 segments). Then observe the brightness of segments 'b' and 'c' as the numbers alternate.
Don