555 timer using PWM to throb an LED?
I'm trying extremely hard to figure out how to make an led throb with a 555 timer using PWM. What I have figured out how to do so far is how to make a 555 circuit with a potentiometer and manually throb it with the pot. But I don't want to just keep turning the pot to throb the led. Is there a I can put a potentiometer in the circuit to control the speed of the throb rather than dim the led?
I need to use PWM for the throbbing. And the throbbing speed needs to be adjustable with a potentiometer.
I'm really new to circuits, but I'm learning a lot. Can someone point me in the right direction? This is an extremely important project for me.