Thanks to https://www.PCBWay.com/?from=atomic for supplying the PCBs used in this video.

We're getting somewhere with the PCB motor it spins pretty fast but we're more interested in torque. There's been an interesting question from the viewers why use a wedgeshaped coil? Surely a spiral coil is better.

Let's try and answer this question with a bit of science!

0:00 Why are we here?
1:13 Why not just use a spiral the intuitive explanation
1:47 What kind of forces are we trying to generate?
2:00 Simulating the magnetic field from our coils
4:25 Simulating the force produced by the magnet on our coils


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