Make a hard drive constantly spin outside a PC case? Answered
I'm currently working on a POV hard drive clock. Instead of designing and building a separate circuit to drive the motor in the hard drive, I thought I'd just power the circuit board of the hard drive and let that spin the motor itself. I gave it gnd, 5v and 12v and it spun up, fast and stable too.
~30 seconds later, it stopped spinning and the only way to make it spin again was to turn the power off and turn it on again.
Obviously this isn't good for a hard drive clock as it needs to be spinning constantly
So how can I make the hard drive spin constantly?
Can I pulse a request line on the IDE cable every once in a while or do I need to actually transfer data to and from the hard drive? If it isn't too complicated I could program a PIC chip to talk to the hard drive to keep it spinning but I'm not sure about the structure of the data or how to talk to the hard drive.
Anyone know the simplest way to keep it spinning?