GreekPIC Posted October 20, 2005 Report Share Posted October 20, 2005 I dismantled a dead hard disk and I can't figure out the main motor. Is it a stepper? It has 4 contacts so I thought bipolar stepper. However if it was so, the two pairs should be isolated to eachother which is not the case. I tried to apply voltage in a sequence, it acts kind of like a low resolution stepper (~90 Quote Link to comment Share on other sites More sharing options...
GreekPIC Posted October 21, 2005 Author Report Share Posted October 21, 2005 Anyone?Oh, BTW I meant disk, not dsk...Maybe that's why I get no answers:-Hard dsk? What is that? :)Nikolas Quote Link to comment Share on other sites More sharing options...
gsmaster Posted October 21, 2005 Report Share Posted October 21, 2005 check this http://home.cc.umanitoba.ca/~umparekh/hard_drive_clock.html Quote Link to comment Share on other sites More sharing options...
audioguru Posted October 21, 2005 Report Share Posted October 21, 2005 I like the Stair Lights. The cat seems to be wondering how the light turn on by themselves.I better not let my wifey see the video or I'll be working on my stairs for weeks. ;D Quote Link to comment Share on other sites More sharing options...
GreekPIC Posted October 22, 2005 Author Report Share Posted October 22, 2005 check this http://home.cc.umanitoba.ca/~umparekh/hard_drive_clock.htmlWell thanks but this doesn't really answer my question. This guy powers the HD and it spins up with it's own controller. But how can I use the motor alone with other electronics?Nikolas Quote Link to comment Share on other sites More sharing options...
ante Posted October 22, 2005 Report Share Posted October 22, 2005 The hard drive motor is not a stepper, however it is electronically commutated. The circuit is included in the drives electronics and varies between different manufacturers. Quote Link to comment Share on other sites More sharing options...
Morpheus4893 Posted June 20, 2006 Report Share Posted June 20, 2006 I have also been attempting to use hard disk motors for some time, have found the driver chip on the old board, got the datasheet for the chip & they are not easy to wire up - the driver IC seems to use some kind of serial interface to the main drive controller, But the motors themselves are virtually the same as the motor in a DC brushless fan, might even be able to use a driver chip from one of those... The possibilities are endless... Quote Link to comment Share on other sites More sharing options...
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