4 wire hard drive motor driver

be80be

Im trying to make a clock out of old hard drive spindle motor it has 4 wires red white black green. All of the 10 or so drives that I have stop spinning after 2 or 3 sec. then have to power up agin. And 1 turns the wrong way. I found a lot about them on Google but no real driver for them some say you use to H-bridges. I looked up the chips on 1 controller board and it has a h-bridge going to the motor. thanks fo any help.

Bruce Bates

be80be -

These message should probably help you, but you may have to join the Yahoo Group in which they're contained. The message summary looks real good. Here it is:
http://groups.yahoo.com/group/lrk-torquemax/message/11832

Regards,

Bruce Bates

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When all else fails, try inserting a new battery.

be80be

Thanks Thay have some good data but not much about the controller but now I no for sure about the motor it not a stepper. I think i found what i was looking for now all i need to do is get 1 of these off the hard drive controller board TDA5144AT its the driver for the motor. Thanks agin I been trying to find a way to do this for weeks

be80be

Does any 1 no of a easy driver chip for for wire 4 DC Brushless motors the one on the hard drive is all so the read controller

SRLM

Take a look for stepper control. I'm guessing that is what those are, and there are lot's of control options available. See the N&Vs article "Stepping out with Spin." It uses a "Push-Pull 4-Channel ST Driver" chip to do the work. I just got mine in the mail, and hope to test it out tonight.

$WMc%

be80be

I could be wrong but every HardDrive that I have ever played w/ used a stepper motor.I know it seems unlikely to spin a stepper @ 7500RPM's, But I have a lot of used HardDrives in my junk box and every one of them has a stepper on them.In fact most have the driver attch. to the motor itself.If We stop and think of what is req. of A HardDrive it seems apparent.Even though its buffered on the input/output it still has to get close to a div. bus speed or the I/O buffer would need to be huge.....This is just a thought and I could be wrong....But please drop a post reply on what You find and end up w/.....

____________________________________$WMc%___________________Thinking Positve_________

be80be

well I have about 20 of them and and only 1 has a usable controller the rest will not work with out the read write head hooked up and 1 of the stata drives i had is for sure a DC Brushless motor but the rest could work as steppers thay have 4 wires with 3 ends hooked to hot 3 ends pulsed to gnd.

Post Edited (be80be) : 11/4/2008 11:09:36 PM GMT

$WMc%

be80be
Have You looked at the signals w/ a MultiChannel scope? and then try to revers Eng. the controller???? W/ the one usable controller You have??? And did You mean SATA Drive????


______if it was easy we would be doeing something esle like that " honeydo " list___________________$WMc%_____________

be80be

Put 2 t"s in it lol sata I have 1 that the read head broke on It has 3 wires only from what i can tell its a DC Brushless motor the 1 controller i have that works i have the datasheet for it but it doesn't tell the timing of the phase change but it shows 1 end of all 3 phase tied to vdd and the 3 open ins are switched on and off of vss so i'm going to hook up with 3 npn write some code to switch them with try my luck out to see if it will run . I was thinking thay will have to switch 1800 times a min. or 30sec i think the 1800 is what it would be a min. maybe way off i don't have a scope I was thinking about buying the 1 Parallax has if it works better then the thing i made using the sound card of the computer and winscope.