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snow
Joined: 28 Jun 2005 Posts: 200 Location: Ashburton / Mid Canterbury / New Zealand
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Posted: Sun Nov 20, 2005 9:12 am Post subject: Stepper motor driver |
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Howdy All
I'm looking at making a CNC mini engraver. I was woundering if any one has done anything with stepper motor drives using a bipolar stepper motor. I want to use this type as the torque figures are pretty good and i have some lying around. I will be using step and direction form my PC parallel port. and using an avr 8535 for the interface driver.
Any pointers would be welcome.
Cheers
Snow |
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Luciano
Joined: 29 Nov 2004 Posts: 3149 Location: Italy
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Posted: Sun Nov 20, 2005 9:47 am Post subject: |
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Hi,
Stepper power board based upon L6208 circuit:
Stepper bipolar command (4 wires)
Maximum current 2.5A per phase
Mode : 1/2 step (Or full step, see pin 12).
Bridge control : 'Slow decay' (see datasheets)
Command Step/direction
Power supply unstabilised, but rectified and filtered, maximum 32V
Power supply stabilised, maximum 40V.
http://www.otocoup.com/CarteL6208_e.htm#Specif
====================
Same but from Italy:
http://www.robotfactory.it/CncBoard/StepperBoard.htm
Schematic: (English)
http://www.robotfactory.it/CncBoard/Schema_board_P.jpg
====================
Some notes:
- The L6208 has indipendent Signal and Power Ground.
- Beware to never shutdown the signal power supply (+ 5V) before
the stepper power supply, that will destroy power circuits.
- Cooling fan mandatory.
Best regards,
Luciano |
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snow
Joined: 28 Jun 2005 Posts: 200 Location: Ashburton / Mid Canterbury / New Zealand
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Posted: Sun Nov 20, 2005 8:10 pm Post subject: |
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Thanks Mate, will look into it |
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Duval JP
Joined: 22 Jun 2004 Posts: 1161 Location: France
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Posted: Sun Nov 20, 2005 9:14 pm Post subject: |
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hi,
a module of system "Extralink" is very powerfull, speed, acceleration, step counter, switch of end,
another one is DC motor with encoder
They are available :
[url]www.sidena.com [/url]
Regards
JP |
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robpar
Joined: 18 Feb 2005 Posts: 32 Location: Vancouver BC
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Posted: Mon Nov 21, 2005 5:24 am Post subject: |
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I have used a motor controller from Gecko, their web site is http://www.geckodrive.com/. This uses step and direction and
will do multi stepping etc.
I am using their products to control my telescope motors with great success. In my research there were a number of people using these controllers for CNC conversions. They use simple step and direction input and have models for both stepper and servo systems. Give them a look they are reasonably priced.
Bob Parry |
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bzijlstra
Joined: 30 Dec 2004 Posts: 1179 Location: Tilburg - Netherlands
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