Stepper motors from dead printers

[RAJAH235]

Do you mean a voltage doubler, Ken? T'is a simple circuit but, why not just use '12 volt' steppers? They're very cheap.
Rob,Stepper driver kits are also avail & cheap from u know who. Try Oatley Electronics/D.Smith etc etc. L.

[FNQ_View (Mick)]

As avandonk said, steppers don't really have an operational voltage. It depends on how you control them. My big box of steppers are all 1.8 deg/step and the listed voltages range from 3.6 to 9.4. All motors came from copiers that have supply rails of 5 & 24VDC.

The one on my desk is listed at 4.2V & 1.5amps, weighs in at 600g. These are fairly typical motors to salvage from copiers.

Mick - Xerox Technician

[shredder]

For those still interested in controlling the Serial Port of the PC here is a link to a good Java Tutorial for it.

http://www.javaworld.com/javaworld/j...5-javadev.html

Note there is a lot of assumed knowledge in these tutorials, but it does show the basics of how to do it.

Cheers

Michael

[RAJAH235]

Ta Mick/Michael. Wasn't too sure re; applied voltages. All the circuits I've come across have been run on 5/12 volts only for the 'ease of access/simplicity/cost' factors, ie; batteries/plug packs. Should have looked more closely @ the circuit I posted. It shows/states you can apply up to 35 volts to the steppers....... L.

[Merlin66 (Ken)]

Just bought a kit from jarcar for $45 does both 555 manual and parallel port control.

[avandonk]

Originally Posted by Merlin66

Just bought a kit from jarcar for $45 does both 555 manual and parallel port control.

What kit was that? Thanks in advance

Bert

[Merlin66 (Ken)]

Comes with a small bi-polar stepper motor and a couple of versions of software ( two for windows and one for DOS)