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Is there a way to control brushless DC motor removed from a CD-ROM drive without using an ESC by using an Arduino.

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    \$\begingroup\$ I'm sure there's a way, although you may need a separate power supply for the motor. What's an ESC? \$\endgroup\$ – jbarlow Oct 12 '14 at 8:19
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    \$\begingroup\$ It amounts to building your own ESC (Electronic Speed Controller). \$\endgroup\$ – Brian Drummond Oct 12 '14 at 9:01
  • \$\begingroup\$ Do you have more characteristic data about the motor? \$\endgroup\$ – kimliv Oct 12 '14 at 14:09
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You cannot control a brushless motor by just plugging it in an Arduino. You might have enough parts in your junk drawer to implement a simple brushless controller, but it's not as simple as an H bridge. You need to be able to read in the Hall effect sensor inputs and switch the FETs correctly. You can google for brushless ESC schematics, but here's an example. If I were you, I'd just buy a pre-made one from HobbyKing or something.

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    \$\begingroup\$ Note that many ESC's have the same ATMega chip as an Arduino at their core to drive their bridges. Hall effect sensors or typically not used in these hobby market designs, but rather sensing winding back EMF. And that works even on motors which do have sensors. \$\endgroup\$ – Chris Stratton Oct 15 '14 at 17:41

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