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How to find out what voltage/current I should give to a motor?

post #1 of 4
Thread Starter 
So I took apart some old hard drives, and one particular WD1200JB Western Digital Caviar hard drive yielded a motor which looks intact and operable. It has a interface board with four contacts. I would like to play a bit with it, but I don’t know how to figure out what kind of current I should put and onto which contacts. I imagine a pair of contacts is responsible for giving the power, while the other pair — for controlling the spin, but how to figure them out, I don’t know.
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Workstation mk II
(16 items)
 
ASUS A73S
(16 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7-4790K Gigabyte G1.Sniper 5 GTX 1080 8GB GB GTX 1080 8GB GB 
RAMHard DriveHard DriveCooling
G.Skill Ares 16GB 2133 dual channel kit Crucial 893 GB SSD 3x HGST 3TB SATA3 H110i v2 
OSMonitorKeyboardPower
Windows 10 Acer XB271HK FILCO Majestouch 2 EVGA Supernova 1300 80 gold 
CaseMouseMouse PadAudio
Corsair 900D Cougar 700M Mionix Sargas 400 Asus Xonar u7 
CPUMotherboardGraphicsRAM
Core i7 2670qm ASUSTeK K73SD GeForce 610M 8 GB Samsung 
Hard DriveOptical DriveCoolingOS
750 GB Hitachi HTS54somenumbers Matshita DVD-RAM UJ8B0AW Laptop cooling — snakey heatpipe, some heatsink... Windows 8 pro 
MonitorMonitorKeyboardPower
Some 17" 1600×900 glossy panel, not too shabby. LG Flatron W2343T Most keys are perfect square. A few elongated r... The AC/DC adapter makes a high-pitched sighing ... 
CaseMouseMouse PadAudio
Not slim. Nexus silent mouse Custom handmade Built in, some realtek crap. 
CPUMotherboardGraphicsRAM
Pentium® III-S 1.13 GHz Compaq ProLiant ML330 G2 ATI Rage XL/XC 2 GB Kingston 
Hard DriveHard DriveOptical DriveCooling
A couple 500GB SCSI II disks in raid 1. 120GB SCSI II disk HL-DT-ST DVD-RAM Stock. It’s noisy. 
OSPowerCaseAudio
Windows XP Pro SP 3 Some PSU I pulled out from under my bed. Compaq. Very genuine case. Some Legacy audio. 
OtherOther
Realtek RTL8169/8110 Gigabit ethernet NIC AMI MegaIDE raid controller 
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post #2 of 4
http://www.epanorama.net/circuits/diskstepper.html
- This is what I found from a search. They are stepper motors, so they aren't like regular 2 wire DC motors.
post #3 of 4
Thread Starter 
Quote:
Originally Posted by Kleer Kut View Post

http://www.epanorama.net/circuits/diskstepper.html
- This is what I found from a search. They are stepper motors, so they aren't like regular 2 wire DC motors.

Thanks, that looks credible. I’ll try to get that thing spinning.
Workstation mk II
(16 items)
 
ASUS A73S
(16 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7-4790K Gigabyte G1.Sniper 5 GTX 1080 8GB GB GTX 1080 8GB GB 
RAMHard DriveHard DriveCooling
G.Skill Ares 16GB 2133 dual channel kit Crucial 893 GB SSD 3x HGST 3TB SATA3 H110i v2 
OSMonitorKeyboardPower
Windows 10 Acer XB271HK FILCO Majestouch 2 EVGA Supernova 1300 80 gold 
CaseMouseMouse PadAudio
Corsair 900D Cougar 700M Mionix Sargas 400 Asus Xonar u7 
CPUMotherboardGraphicsRAM
Core i7 2670qm ASUSTeK K73SD GeForce 610M 8 GB Samsung 
Hard DriveOptical DriveCoolingOS
750 GB Hitachi HTS54somenumbers Matshita DVD-RAM UJ8B0AW Laptop cooling — snakey heatpipe, some heatsink... Windows 8 pro 
MonitorMonitorKeyboardPower
Some 17" 1600×900 glossy panel, not too shabby. LG Flatron W2343T Most keys are perfect square. A few elongated r... The AC/DC adapter makes a high-pitched sighing ... 
CaseMouseMouse PadAudio
Not slim. Nexus silent mouse Custom handmade Built in, some realtek crap. 
CPUMotherboardGraphicsRAM
Pentium® III-S 1.13 GHz Compaq ProLiant ML330 G2 ATI Rage XL/XC 2 GB Kingston 
Hard DriveHard DriveOptical DriveCooling
A couple 500GB SCSI II disks in raid 1. 120GB SCSI II disk HL-DT-ST DVD-RAM Stock. It’s noisy. 
OSPowerCaseAudio
Windows XP Pro SP 3 Some PSU I pulled out from under my bed. Compaq. Very genuine case. Some Legacy audio. 
OtherOther
Realtek RTL8169/8110 Gigabit ethernet NIC AMI MegaIDE raid controller 
  hide details  
Reply
Workstation mk II
(16 items)
 
ASUS A73S
(16 items)
 
 
CPUMotherboardGraphicsGraphics
Intel Core i7-4790K Gigabyte G1.Sniper 5 GTX 1080 8GB GB GTX 1080 8GB GB 
RAMHard DriveHard DriveCooling
G.Skill Ares 16GB 2133 dual channel kit Crucial 893 GB SSD 3x HGST 3TB SATA3 H110i v2 
OSMonitorKeyboardPower
Windows 10 Acer XB271HK FILCO Majestouch 2 EVGA Supernova 1300 80 gold 
CaseMouseMouse PadAudio
Corsair 900D Cougar 700M Mionix Sargas 400 Asus Xonar u7 
CPUMotherboardGraphicsRAM
Core i7 2670qm ASUSTeK K73SD GeForce 610M 8 GB Samsung 
Hard DriveOptical DriveCoolingOS
750 GB Hitachi HTS54somenumbers Matshita DVD-RAM UJ8B0AW Laptop cooling — snakey heatpipe, some heatsink... Windows 8 pro 
MonitorMonitorKeyboardPower
Some 17" 1600×900 glossy panel, not too shabby. LG Flatron W2343T Most keys are perfect square. A few elongated r... The AC/DC adapter makes a high-pitched sighing ... 
CaseMouseMouse PadAudio
Not slim. Nexus silent mouse Custom handmade Built in, some realtek crap. 
CPUMotherboardGraphicsRAM
Pentium® III-S 1.13 GHz Compaq ProLiant ML330 G2 ATI Rage XL/XC 2 GB Kingston 
Hard DriveHard DriveOptical DriveCooling
A couple 500GB SCSI II disks in raid 1. 120GB SCSI II disk HL-DT-ST DVD-RAM Stock. It’s noisy. 
OSPowerCaseAudio
Windows XP Pro SP 3 Some PSU I pulled out from under my bed. Compaq. Very genuine case. Some Legacy audio. 
OtherOther
Realtek RTL8169/8110 Gigabit ethernet NIC AMI MegaIDE raid controller 
  hide details  
Reply
post #4 of 4
You wont get a stepper motor spinning properly without a driver they don't work the same was as a normal DC motor. If i recall correctly the steppers in an HDD and DVD drive are 4 pin motors which you can get a cheap driver for like 3$ on ebay.
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Teh YayZors!
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