Brushless DC motor control?

Wazersdea said:

Hello Community,

My son and I took apart a dead hard drive, and salvaged the motor. Apparently it's a brushless DC motor that needs a dedicated controller. Any way it can be powered by analog, discrete circuitry?

If I understand it correctly, each of the three power wires needs to be energized while the other two wires are held at ground, and the three wires take turns being powered by, what, +5V, right?

Although there are many bldc motor controller but as I'm not much technical at these things so need your suggestions.

Thanks,

Wazersdea

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RCinFLA said:

Do a google search for 'ecm motor control'.

There are several methods of speed control. Some have separate tach sense wires. If only three wires, they use current or only drive two phases using third phase as tach indication.

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