Binary Clock-LED not working, why?
But Instead I used a 555 in astable to run about 1Hz. I already tested the 555 on a individual led and it worked.
Now I finally completed my work and my leds are not lighting up. I believe I should remove the resistor since the max output of the counter is only about 4mA so I would be limiting my current, ALOT.
The thing is, I tested every LEDS with a multimeter both including resistors and not and they are all lighting up all fine, but when I install my counter, see that the led are not working and I try to make a diode test, they doesn't light up at all.
I need to remove the counter in order to be able to light them up.
What is the solution and why?
Is it sinking current? But it design is not to sink, but to source.....
Help please, thanks.