I am not really afraid to get flamed tbh . Criticism , both good and bad , helps people grow . Everyone is entitle to their opinion . <| sep |> Yes , because X 7 Defenders are craaaaazy . <| sep |> Yes , From the Atmega 328 p datasheet 23 . 6 . 1 Analog Input CircuitryThanks for that ! That 24 . 6 . 1 for those who are curious and will actually read it . Yes , although it depends on your input impedance . Low impedance inputs will cause the reading to settle very quickly . Note that an unconnected input is effectively infinite impedance . Yes I understand , thanks . Easiest way is to put 10100 nF capacitors on each input , they should trivially overpower the internal capacitance of the ADC , but may also slow down your signal a little which isn ' t a problem if your signal is fairly slow anyway . Got it , ok . Yep , that way the impedance isn ' t infinite when the input is open , rather the pin goes to a known voltage in the absence of a sensor , and you can detect in your code that there ' s likely no sensor attached . Most sensors should have no trouble driving a moderate resistance of 10100 k , but check the sensor ' s datasheet to be sure . I ' ll keep this in mind when designing circuits from now on .