Analog Comparator In Avr. Inputs can either be one of the selectable internal references or from external pins. When the changing voltage exceeds the reference voltage an led is flashed.
This video shows the circuit operating. It compares the value between the ain0 positive pin and the ain1 negative pin. The comparator in the attiny2313 is used to compare a changing voltage with a fixed reference voltage.
The analog comparator is already set to compare the two default inputs and if the interrupts are enabled it will trigger on both rising and falling edge this is the toggle mode.
Analog comparator is a pretty simple peripheral but it can give big benefits. The analog comparator is a crazy little thing. A capacitive sense mode. Analog comparator is a device which compares two input voltages and generates output accordingly.
