I wonder why an where they have to be synchronized? The pulswide is
different most of the time. Is it than the frequencie that has to be
synchronized?=20

Willy


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of Samuel BOUQUET
Sent: woensdag 19 mei 2004 18:14
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [EE:] pic: Roman Blacks Linistepper stepper motor
controller


The problem is that you have to "synchronize" all the PWM!

-----Message d'origine-----
De : pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]
De la part de Willy Gooris Envoy=E9 : mercredi 19 mai 2004 17:36 =C0 :
PICLIST@MITVMA.MIT.EDU Objet : [PICLIST] pic: Roman Blacks Linistepper
stepper motor controller


To all, but specially to Roman Black.

I found this list by looking for a "stepper motor controller"  and I am
also beginning with pic micro chips.

I read the spec's about "Roman Blacks Linistepper stepper motor
controller". It makes use of power transistors in the output stage. It
was readings somewhere that they are running hot.

Question:
Is it not possible to put 4 pwm devices in the place of the end
transistors. These PWM devises could be 4 pics with a PWM output and a
MOSFET. This may be simplistic, but ........

Is there somebody that has done this? Or is this to difficult to do? How
would you do it.

Thanks,

Willy

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