Hi I suppose to make 2 digit 7 segment LED display, but don't have multiplexor or shift register, so I suppuse use Arduino Sensor shield to this project. I use for power source 2 LiPo batteryes, so it's voltage is 7.2v My Idea is to connect all LED in parallel lines, by 2 or any (till 6, as many as resolve breadboard) in line with 10 Kohm resistors one for each line to signal pin. And the positive pin of all 7 segment LEDs connect not to +5v, but to difference Output arduino's pin. And use positive strobe for power only one digit at a time.
When I make positive 1s output pin, will work 1st digit only, and if positive strobe will be on 2nd output pin, will works 2nd digit, not depends on signal pins state.
But i have to doubts here: 1.Does it Arduino sensor shields V.5.0 output pins has enough power to pass such a current or blow out? I can't count it to precizeance, so any idea, please.
2.Which pin i need use for strobing power - digital or analog? And why? (I think myself, that no difference, but doubt - may be difference exist?) possible some has more current, or can switch quickly or something else?
I just newby, as you understand, but i'm afraid to blow out my pet it if i don't see something under watwer.