> Not all brushless motors have the controller internal.

I'd also like to add that not all brushless motors have controllers,
period. Your typical cheap brushless DC computer fan has 1 hall-effect
sensor, 2 NPN transistors and 3 resistors. The fancy ones may have a
decoupling cap.

Brushless motors don't need to be rocket science if you don't need to go
into space :-)

Cheers,
Bob