For jobs like this, it’s tempting to just use an analog input on an Arduino and take care of conversions in code. But it’s nice to know how to do it old school, too, and hats off to [Kerry ...

Ask me how I know. However, others are more complex. Certain luxury cars in the late 1990s use a digital audio input over optic fibre that is difficult to spoof with off-the-shelf hardware.

The goal in digital feedback control design is to determine the performance criteria needed for a sensor’s analog-to-digital converter (ADC) and the controller’s digital-to-analog converter (DAC).