Hard Drive Motor Controller Circuit

In this projet i re use a bldc motor that i retrieved from an old hdd the seagate st31722a it s a 3 5 inch hdd and 1 7gb of storage capacity.

Hard drive motor controller circuit.

Your hard just quit and it has some priceless data that isn t backed up. First you have to select the drive by connecting the correct drive select signal to ground. Suitable for hard drive brushless dc motor brushless dc motor drive and other miniature 3 wire or 4 wire brushless dc motor without sensor. These tools allow students hobbyists and professional engineers to design and analyze analog and digital systems before ever building a prototype.

Tvs diodes short circuit can be test by a multimeter. We can see a burnt hole or raised part on it. This is much more likely to work on a brand new drive that just. Hard disk controller known as the adapter of hard disk driver is the interface device between computers and hard disk driver.

Most hdd pcbs failures are caused by motor controller chip burnt then the tvs diodes burnt and main controller ic burnt. The following signals are used to control the disk drive stepper motor controller circuit. Hard disk controller is used to receive and interpret the computer order and then send various control signals to hard disk adapter. Then you use the direction signal to select the direction which you want the motor to take step.

The stepping is controlled using. Online schematic capture lets hobbyists easily share and discuss their designs while online circuit simulation allows for quick design iteration and accelerated learning about electronics. In most cases motor controller chip burnt can be seen by eyes. The motor maximum speed is 4500 rpm 75 rotation second and the maximum power is reached during the seeki n g phase is about 6 4w.

How to swap a hard drive controller circuit. The new l7208 hdd motor controller integrates all of the circuits needed to control and drive the hdd spindle motor and voice coil actuator including all the necessary power fet devices and is designed to save space and to minimize the drive s power consumption. Hello all here i have tried to run the hard disk with ic 555 and ic 4017 and motor controller ic l293d the idea is simple hard disk motor requires 3 shifted pulses to run you can get information about the stepper motor and running machanism in some other article of instructible. Hard drives disk have high speed low profile brushless motors that can be re used called bldc.

This is a long shot but worth trying in some cases.