Arduino LED Chaser with Buttons
This circuit has 6 LEDs and 3 buttons, the LEDs are arranged in a circle
The LEDs are connected to PWM outputs and their brightness is continuously adjusted on a sine wave pattern The brightness of each led is 60 degrees out of phase with the next This gives the impression of LED brightness rotating around the circle
Button 1 increases the speed of rotation Button 2 decreases the speed of rotation Button 3 reverses the speed of rotation