Hello there!
I have recently started learning electronics and I have now successfully programmed a PIC and made a 8-flashing-LED-circuit
First I made it with a resistor on every LED connected pin, but then I realized it could be done with a single resistor between all the LEDs and the ground. But now with this connection setup the LEDs get very dim when several are lighten up at the same time. My thought of this is that the resistor only can let through a fixed amount of current. So what I wonder is wheter I'm right or if this has something with the PIC to do? I've read about "pull-up resistors" several times, but I haven't yet understood what that is. I would be glad if anyone could enlighten me!
I have recently started learning electronics and I have now successfully programmed a PIC and made a 8-flashing-LED-circuit
First I made it with a resistor on every LED connected pin, but then I realized it could be done with a single resistor between all the LEDs and the ground. But now with this connection setup the LEDs get very dim when several are lighten up at the same time. My thought of this is that the resistor only can let through a fixed amount of current. So what I wonder is wheter I'm right or if this has something with the PIC to do? I've read about "pull-up resistors" several times, but I haven't yet understood what that is. I would be glad if anyone could enlighten me!