MESA Card Recommendation

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27 Jun 2017 07:57 #95023 by tecno
tecno replied the topic: MESA Card Recommendation
r1.iso either 64 bit or 32bit
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27 Jun 2017 08:10 #95024 by rodw
rodw replied the topic: MESA Card Recommendation
I see you found your your way to the other thread:
i386 = 32 bit
amd64 = 64 bit

Zsync is a file transfer program but I think it also allows you to (z)sync a remote .iso to your PC without having to download the complete .iso every time it changes.
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27 Jun 2017 08:22 #95025 by Clive s
Clive s replied the topic: MESA Card Recommendation
Thanks Rod and Tecno
It was the Zsync clarification that was confusing me
The following user(s) said Thank You: rodw
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27 Jun 2017 23:11 #95081 by Jono
Jono replied the topic: MESA Card Recommendation
Hello Clive

When you have tried that out, if you can post a brief update about how easy/difficult that was and how successful, I would be very grateful. Thanks. Also, what ethernet card are you using?

Regards
Jono
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28 Jun 2017 01:04 #95084 by Jono
Jono replied the topic: MESA Card Recommendation
Regarding determination of how many axis' I require on the mesa card(s) :

- for my two servos on X-axix (one each end of gantry), am I correct in assuming that the two sets of servo drive inputs are just twisted together and connected on the single mesa card axis interface?
[with encoders connected to servo drives]

Jono
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28 Jun 2017 01:14 - 28 Jun 2017 01:15 #95086 by rodw
rodw replied the topic: MESA Card Recommendation
A much better way would be to use Master branch and the Joint Axis features now incorporated therein so you can run the gantry motors each as a separate joint. This means you will use separate 7i76e stepgens.
Linuxcnc can then square the axis during the homing sequence for you and you adjust for square using the homing offsets. See homing sequence in the master branch documentation.
Last Edit: 28 Jun 2017 01:15 by rodw.
The following user(s) said Thank You: Jono
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28 Jun 2017 13:32 - 30 Jun 2017 07:02 #95104 by Clive s
Clive s replied the topic: MESA Card Recommendation

Jono wrote: Hello Clive

When you have tried that out, if you can post a brief update about how easy/difficult that was and how successful, I would be very grateful. Thanks. Also, what ethernet card are you using?

Regards
Jono


I am sure I am not the correct person to give this sort of advise. There are many on here much more qualified to comment.
I am using a 5i25-7i76 very successfully for my mill and lathe and very happy with it.
I am thinking of changing from Mach3 with a Purlogic controller that does twin axis homing to a 7i76e mesa on my router but I had forgotten that I need to do it with the Master branch and the Joint Axis features as Rod says above.

Edit: Update: I have tried the Stretch Version (linuxcnc-stretch-uspace-amd64-r1.iso 23-Jun-2017 17:13 1.1G) Iso and it loaded first time it also had the 7i76e board in the Pnconf list.. Happy days. I don't have a 7i76e board yet to try but it looks fine and seems quick.
Last Edit: 30 Jun 2017 07:02 by Clive s. Reason: Added text
The following user(s) said Thank You: Jono
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21 Aug 2017 17:37 #97827 by remrendes
remrendes replied the topic: MESA Card Recommendation
Hi guys!
I'm little bit confused about the Mesa cards. If everything looks like fine, but I'm not really happy with a parallel port speed, which one is a good choice for me? I only need for 3 axis STEP/DIR outputs for ACS606 drivers. Looks like 7i43 will fit, but I did not find a STEP frequency. With a 4000ppr encoder I cant really have a fast enough motions.
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21 Aug 2017 17:59 #97829 by PCW
PCW replied the topic: MESA Card Recommendation
For a simple 3 axis system, I would suggest a 5I25/6I25 (PCI/PCIE) and whatever breakout board you are currently using
If you want an Ethernet connected system I would suggest a 7I92H+ your breakout

Maximum 5I25/6I25 steprate is about 4 MHz, maximum 7I92 steprate is about 10 MHz
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21 Aug 2017 18:23 #97832 by remrendes
remrendes replied the topic: MESA Card Recommendation
Thanks! Yes, this is the other on what I looked. 4MHz looks more than enough.
When do I need a doughter card?
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