We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. ... The Schematic. Do not power ...

Autozero circuit that allows the user to automatically adjust the zero-point virtual ground terminal of the scope with the ...

The potentiometers were particularly frustrating. ... There’s really no point to this other than I wanted something that would work out the analog circuit simulation as well as the Arduino.