Tuning question, stepper motor mill
23 Feb 2019 02:41 #126981
by Leon82
Replied by Leon82 on topic Tuning question, stepper motor mill
Ok I'll reduce it and see what it does. I tried 20k and then went up.35000 is pretty long for a reset time, I would suggest not using a rest time longer than half your base-thread time. if you have trouble at that speed,either try inverting your step signal or don't use the reset feature.
The reason being the reset feature holds the real time system hostage for the amount of time it counts down and if your computer is twiddling it thumbs for more than half the time... you get the picture.
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23 Feb 2019 23:52 #127024
by Leon82
Replied by Leon82 on topic Tuning question, stepper motor mill
Is it common to use the double freq ? It appears that i am.
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24 Feb 2019 16:57 - 24 Feb 2019 20:16 #127063
by Leon82
Replied by Leon82 on topic Tuning question, stepper motor mill
I reduced the reset to 10000
Dirhold 50000
Dirsetup 35000
Also I had an old video card lying around which was newer than the one in the machine. In reading the wiki it said that cards that shared the motherboard memory we're not recommend. I think the old card did this. With the new (old) card and disabling a bunch of stuff in the bios the service thread is at 17000 and base thread 21000.
When I used to boot up wheezy it would say bad thermal sensor and cool and quiet was on in the bios .
It runs nice at 96ipm.
On wheezy this machine is around 6000 in both threads.
Dirhold 50000
Dirsetup 35000
Also I had an old video card lying around which was newer than the one in the machine. In reading the wiki it said that cards that shared the motherboard memory we're not recommend. I think the old card did this. With the new (old) card and disabling a bunch of stuff in the bios the service thread is at 17000 and base thread 21000.
When I used to boot up wheezy it would say bad thermal sensor and cool and quiet was on in the bios .
It runs nice at 96ipm.
On wheezy this machine is around 6000 in both threads.
Last edit: 24 Feb 2019 20:16 by Leon82.
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24 Feb 2019 22:47 #127070
by Leon82
Replied by Leon82 on topic Tuning question, stepper motor mill
What does inverting the step pin do?
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24 Feb 2019 23:24 #127073
by PCW
Replied by PCW on topic Tuning question, stepper motor mill
If you have very large direction setup and hold times, (larger than drive specified setup and hold times + step time) probably nothing
If you have small direction setup and hold times set you may violate these timings and lose/gain steps on reversals
Inverting the step pulse is not something to do randomly, you figure out which edge
of the step pulse the drive uses and set the step output polarity to match.
If you have small direction setup and hold times set you may violate these timings and lose/gain steps on reversals
Inverting the step pulse is not something to do randomly, you figure out which edge
of the step pulse the drive uses and set the step output polarity to match.
The following user(s) said Thank You: Leon82
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24 Feb 2019 23:45 #127074
by Leon82
Replied by Leon82 on topic Tuning question, stepper motor mill
Thanks,
from what I have tested it does not like anything under 5000 for dir hold.
Dir setup it will accept a value of 1000 with a high dirhold pulse.
It will not run with the 201 preset.(I have 201x).
from what I have tested it does not like anything under 5000 for dir hold.
Dir setup it will accept a value of 1000 with a high dirhold pulse.
It will not run with the 201 preset.(I have 201x).
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25 Feb 2019 00:26 #127077
by PCW
Replied by PCW on topic Tuning question, stepper motor mill
Is I mentioned before, there is basically zero cost to using large direction setup and hold times so 10000 for each is a good and almost universal number
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25 Feb 2019 01:19 - 25 Feb 2019 01:20 #127078
by Leon82
So.....
Back into step config, 201 preset with inverted step and it's zooming at 120 ipm. No latency warnings either and no crunchy sounds.
I came across another post here about the geckos on the back part of the pulse. It uses really low dir and setup values and with your comment I figured I would try it out.
Replied by Leon82 on topic Tuning question, stepper motor mill
Is I mentioned before, there is basically zero cost to using large direction setup and hold times so 10000 for each is a good and almost universal number
So.....
Back into step config, 201 preset with inverted step and it's zooming at 120 ipm. No latency warnings either and no crunchy sounds.
I came across another post here about the geckos on the back part of the pulse. It uses really low dir and setup values and with your comment I figured I would try it out.
Last edit: 25 Feb 2019 01:20 by Leon82.
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