LinuxCNC compatible industrial PC
13 May 2025 19:21 - 13 May 2025 21:26 #328410
by tommylight
Replied by tommylight on topic LinuxCNC compatible industrial PC
Yeah, sorry LangdonS, but do not use inexpensive power supplies, not worth the headache they cause, the time wasted finding they are the problem, nor the damage they might cause, and some are danger to life by not being isolated from the mains.
At a minimum use MeanWell or even better Delta, the price difference is not big.
Also, using old laptop power supplies is a very good idea, they are very high quality and do not fail.
For 5V supplies, there are very cheap and good quality ones form Anker, Baseus, Satechi, Gembird, just look for 5V only, so no QC or PD, always under 10$, isolated, protected, low ripple, etc.
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Another good idea is those same companies but the 65W PD adapters, use a trigger board set to 20V, they can be found on sale for 15-20$. I have plenty of these, like everywhere.
Waiting for 140W/28V ones to drop in price, one of these can easily handle 4 of so called TB6600 drives at full load with low inductance motors.
Although from experience, they really do not like back EMF. I killed one testing drones, as soon as you pull back the throttle fast = they die!
Anker 65W, only the output in use died, the second output still works fine.
At a minimum use MeanWell or even better Delta, the price difference is not big.
Also, using old laptop power supplies is a very good idea, they are very high quality and do not fail.
For 5V supplies, there are very cheap and good quality ones form Anker, Baseus, Satechi, Gembird, just look for 5V only, so no QC or PD, always under 10$, isolated, protected, low ripple, etc.
-
Another good idea is those same companies but the 65W PD adapters, use a trigger board set to 20V, they can be found on sale for 15-20$. I have plenty of these, like everywhere.
Waiting for 140W/28V ones to drop in price, one of these can easily handle 4 of so called TB6600 drives at full load with low inductance motors.
Although from experience, they really do not like back EMF. I killed one testing drones, as soon as you pull back the throttle fast = they die!
Anker 65W, only the output in use died, the second output still works fine. Please Log in or Create an account to join the conversation.
28 May 2025 10:06 #329305
by workshop54
Replied by workshop54 on topic LinuxCNC compatible industrial PC
I started with the latency tests, but then I found the script to run latency tests.
The best result I got with with latency-histogram --nobase was about 230000
I logged every change I made and the results after the change, which gives me some nice insights what happens, but I cannot get the latency any lower.
I mentioned the "Atom platform", but I don't have enough experience with hardware to know exactly what you mean by that. I can make an educated guess, but that's basically it.
So instead of looking for PC's of a specific brand and type, would it be better to look at platforms that work well?
The best result I got with with latency-histogram --nobase was about 230000
I logged every change I made and the results after the change, which gives me some nice insights what happens, but I cannot get the latency any lower.
I mentioned the "Atom platform", but I don't have enough experience with hardware to know exactly what you mean by that. I can make an educated guess, but that's basically it.
So instead of looking for PC's of a specific brand and type, would it be better to look at platforms that work well?
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