To experiment with that, [Mark Gutierrez] tried rolling some home-brew capacitors for his electric ... with a potentiometer forms a variable low-pass filter. A rich folklore has developed over ...

Subsequently, the cost is lower when a single filter serves many analog inputs. You can use a dual digital potentiometer, two capacitors, and a single amplifier to configure a low-pass, second-order ...

When these capacitors are set, the resistors in the circuit are changed to appropriate values for the circuit implementation. For example, a programmable second-order, low-pass Butterworth filter ...

As you can see above, the low pass filter is made up of one resistor and one capacitor. The theory is not hard to understand, and with [Scott’s] help you’ll become much more comfortable with ...

In the above circuit i choose the cutoff frequency to be approximately 5KHz so i used the resistor R of value 10KΩ and capacitor of value 3nF. You can change it if you want to by using the above ...