Enginursday: Detecting Knob Changes

Comparing an ADC value with a previous value can detect a changed state, but what if noise is introduced? See some topologies in action for detecting purposefully changed inputs while rejecting noise. See http://ift.tt/2xAEOXc for more information. SparkFun parts used in this video: SparkFun RedBoard - Programmed with Arduino http://ift.tt/2m1BxO9 Black Knob - 15x19mm http://ift.tt/1PbuTIH Rotary Potentiometer - 10k Ohm, Logarithmic http://ift.tt/2d4JlIA Teensy 3.2 http://ift.tt/1izqDsY SparkFun TeensyView http://ift.tt/2m6TJqn Proto Pedal Enclosure http://ift.tt/2cUIhIg SparkFun Proto Pedal http://ift.tt/2dkZLfi Code used in this video can be found on github:: http://ift.tt/2wkT2x4 The referenced book is called: Design Patterns: Elements of Reusable Object-Oriented Software ISBN-13: 978-0201633610