Controlling the World with Raspberry Pi

I know I’ve mentioned this before, but on the off chance you’ve forgotten, I graduated from university in 1980. My degree was in Control Engineering. This was based on a core of math (oh, so much math), with “surrounding” subjects of electronics, mechanics, and hydraulics/fluidics.

In those days, most of the control algorithms with which I worked were things like proportional-integral-derivative (PID), the implementations of which were analog in nature. The only computer that physically resided in the engineering department was an analog monster that was not dissimilar to that shown below. Simulating equations on this bodacious beast required you to have good knees because there was a lot of crouching involved.

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