Field Oriented Control is often considered a dark art filled with diagrams, math, and proofs by intimidation.

Often people will show a diagram like this,

and pretend like it's self explanatory.

Not true!

However, once you get an understanding of what the different pieces are and what they are trying to do, you'll realize that it can be quite intuitive.

Let's dive in.

It's just magnets and wires.

Tell me if this sounds familiar:

You're working on a project and want to log some UART data. Nothing too crazy though, logging to an SD card will work fine (you've got a few of those lying around anyways).

We at CGG Labs love the RP2040 ❤️

Here's how to use it with FreeRTOS to unlock the power of full preemptive scheduling.

If you pick up the data sheet for a motor, one of the first things you'll see are the $K_V$ and $K_T$ ratings.

A lot of motors even have these values written on the rotor.

But what do they mean?