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Can the OPI5 be Configured to Run LCNC?
- echristley
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3 years 4 months ago #273888
by echristley
Replied by echristley on topic Can the OPI5 be Configured to Run LCNC?
Another note, the OPi5 is sensitive to heat.
Set the servo to 1200000 and the P to 833 and ran a couple of the example programs. No problem. I left the system up while I went in for dinner. Came back out intending to run a couple more, but it just failed to complete the reads. Reset the servo to 2000000, and still got the read errors. Didn't have a small fan ,to I put my big shop fan to blow on it. Cooled it right down, and the read errors disappeared.
Set the servo to 1200000 and the P to 833 and ran a couple of the example programs. No problem. I left the system up while I went in for dinner. Came back out intending to run a couple more, but it just failed to complete the reads. Reset the servo to 2000000, and still got the read errors. Didn't have a small fan ,to I put my big shop fan to blow on it. Cooled it right down, and the read errors disappeared.
- royka
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3 years 4 months ago - 3 years 4 months ago #273933
by royka
Replied by royka on topic Can the OPI5 be Configured to Run LCNC?
The Opi5 can run pretty cool, with 2 cores isolated and a good heat sink it takes some time before it begins to throttle.
I wonder if it was because of throttling or might one of the other chips get overheated? Ethernet chip or PMU?
You could check the cpu temp with armbianmonitor -m
Did you try to set the servo back to 1000000 with the big fan on it?
I wonder if it was because of throttling or might one of the other chips get overheated? Ethernet chip or PMU?
You could check the cpu temp with armbianmonitor -m
Did you try to set the servo back to 1000000 with the big fan on it?
Last edit: 3 years 4 months ago by royka. Reason: typo
- echristley
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3 years 4 months ago #273954
by echristley
Replied by echristley on topic Can the OPI5 be Configured to Run LCNC?
No. I didn't try that. I'll do that tonight. I don't think it likely to succeed. The failures happen early on after boot-up before. But, it is easy to do.
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3 years 4 months ago #273956
by PCW
Replied by PCW on topic Can the OPI5 be Configured to Run LCNC?
Not sure if this applies to the OPI5 but typically you cannot have any kind
of CPU speed modulation enabled with real time operations as the CPUs is
often halted for milliseconds when stepping between speeds.
of CPU speed modulation enabled with real time operations as the CPUs is
often halted for milliseconds when stepping between speeds.
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- royka
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3 years 4 months ago #273969
by royka
Replied by royka on topic Can the OPI5 be Configured to Run LCNC?
The same with the OPI5, it's disabled in the kernel config. I assumed it would still throttle as a safety, but you are right. Forgot I had tried that once without a fan or heat sink but 2 cores isolated, at 85 celcius degrees (max temp) it still didn't throttle. That could also give problems.
If echristley still has these issues while cooling I'll try to reproduce the error.
If echristley still has these issues while cooling I'll try to reproduce the error.
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3 years 4 months ago #273972
by echristley
Picture of the setup. Motors on top, beside the monitor. White box on the right with the scope sitting on it is the power box. Fan is blowing directly on the OPi5.
I moved the servo period to 10000000, and the P factor to 1000. Opened up Gmoccapy and loaded the "cds" example file. Before it got the bit into position to do the first cut, it failed to read.
Shifted to 1500000 (how ever many zeros that is supposed to be). Ran the same example file, and got maybe halfway through.
Replied by echristley on topic Can the OPI5 be Configured to Run LCNC?
Picture of the setup. Motors on top, beside the monitor. White box on the right with the scope sitting on it is the power box. Fan is blowing directly on the OPi5.
I moved the servo period to 10000000, and the P factor to 1000. Opened up Gmoccapy and loaded the "cds" example file. Before it got the bit into position to do the first cut, it failed to read.
Shifted to 1500000 (how ever many zeros that is supposed to be). Ran the same example file, and got maybe halfway through.
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