Some advices for a noob
02 Jul 2013 22:23 - 02 Jul 2013 22:24 #36238
by andypugh
Something like
loadrt threads name1=fast, name2=slow, period1=50000, period2=1000000
www.linuxcnc.org/docs/html/man/man9/threads.9.html
net pwm-out pwmgen.0.pwm => parport.0.pin-04-out
(or similar)
Replied by andypugh on topic Some advices for a noob
If you want a useful PWM output then you will need a fast thread as well as the the slower "servo" thread.loadrt threads
here i don't have servo_thread or base_thread only thread1
Something like
loadrt threads name1=fast, name2=slow, period1=50000, period2=1000000
www.linuxcnc.org/docs/html/man/man9/threads.9.html
setp pwmgen.0.enable 1here how i connect pwmgen.0.value ,and pwmgen.0.pwm to parport.0.pin-09.out ?
net pwm-out pwmgen.0.pwm => parport.0.pin-04-out
(or similar)
Last edit: 02 Jul 2013 22:24 by andypugh.
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03 Jul 2013 00:08 #36243
by kenran
Replied by kenran on topic Some advices for a noob
Ok my configure doesn't crash anymore at startup but now how i connect xstep to pwmgen ?
net Xstep => pwmgen.0. value ?
net Xstep => pwmgen.0. value ?
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03 Jul 2013 01:54 #36246
by andypugh
Why would you want to do that? What do you expect that to achieve?
Replied by andypugh on topic Some advices for a noob
Ok my configure doesn't crash anymore at startup but now how i connect xstep to pwmgen ?
Why would you want to do that? What do you expect that to achieve?
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03 Jul 2013 02:19 #36247
by kenran
Replied by kenran on topic Some advices for a noob
I try to move my X axis via pwmgen (like a spindle but in fact it's a linear axis)
I found a good configuration i think :
linuxcnc.org/lucid/emc2/index.php/russia...os-1-stepper?limit=6
connecting pwm pulse to the opto pwm->analog converter in LPT pin 5 :
net Xpwm pwmgen.0.pwm
net Xpwm => parport.0.pin-05-out
connecting direction signal to LPT pin 6:
net Xdir <= pwmgen.0.dir
net Xdir => parport.0.pin-06-out
various signals :
net Xenable => pwmgen.0.enable
I just need to configure an encoder to have feedback position
I found a good configuration i think :
linuxcnc.org/lucid/emc2/index.php/russia...os-1-stepper?limit=6
connecting pwm pulse to the opto pwm->analog converter in LPT pin 5 :
net Xpwm pwmgen.0.pwm
net Xpwm => parport.0.pin-05-out
connecting direction signal to LPT pin 6:
net Xdir <= pwmgen.0.dir
net Xdir => parport.0.pin-06-out
various signals :
net Xenable => pwmgen.0.enable
I just need to configure an encoder to have feedback position
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03 Jul 2013 02:22 #36248
by andypugh
OK, what you have is a servo config, using the word "step" just confused me.
You will need a PID component too.
Replied by andypugh on topic Some advices for a noob
I try to move my X axis via pwmgen (like a spindle but in fact it's a linear axis)
OK, what you have is a servo config, using the word "step" just confused me.
You will need a PID component too.
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