Need help with L298 driver
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Need help with L298 driver

 
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peanutbutter



Joined: 11 Aug 2007
Posts: 2
Posted: Sat Aug 11, 2007 8:41 am    Post subject: Need help with L298 driver Reply with quote
Hi I am new here.
I need some help with motion control; currently I am programming the PIC18f4520 microcontroller connected with the LM629 motion controller and the L298 driver.
How do I vary the speed of a motor? Because there are two output pins of the LM629 giving the PWM magnitude and PWM sign.
I feed in the PWM mag into the enable pin of L298 and the PWM sign to transistors(switches) to both input pins of L298.
However does changing the voltage level of the enable pin change the speed of the motor? The PWM sign to the input pins vary the direction but does also vary the SPEED through the duty cycle?
This part here I am quite unsure.
Someone enlighten me please thanks very much.

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neon



Joined: 25 Feb 2006
Posts: 585
Posted: Sun Aug 12, 2007 10:08 am    Post subject: Reply with quote
i CANNOT HELP YOU I HAVE NO IDEA WHAT IS AN L298 datasheet locator cannot find it. please submit a schematic to look at. sorry maybe somebody else can do it. mabe lmxxx
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peanutbutter



Joined: 11 Aug 2007
Posts: 2
Posted: Sun Aug 12, 2007 12:45 pm    Post subject: Reply with quote
haha its ok.
any idea abt lm629 and motion control?
what i think is that the speed and direction are controlled by the input pins not the enable pin right

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