Hello.
I’m new here, and I have just finished “hello world” with the arduino.
I’m using an arduino uno board, and I have a question.
Is it possible to light several LEDs in sequence using 1 pin, like an LED array?
In sequence, I mean, the first lights up, then goes off, then the second, etc.
Forgive me if this is a simple thing, I’m just learning and I was hoping to have this as my first project to learn
Is it possible to light several LEDs in sequence using 1 pin,
No, you need one pin per LED ( don't forget the resistor ) or an external chip like a shift register, that requires 3 pins, or an I2C device that requires 2 pins.
I thought it would be something like that. I was hoping to do a really big light bar, 60 LEDs...
Why the 1 pin limit? with 3 pins you can light up as many as you like by cascading shift registers, You can even dim them with this software. http://www.elcojacobs.com/shiftpwm/
with 3 pins you can light up as many as you like by cascading shift registers,
Again, I am super new to arduino, what is a shift register?