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odd motor movement
« on: November 02, 2013, 08:05:40 PM »
Im putting together a new mill . Im using a C35 BOB . CNC4PC ( Maker of the Bob) has an xml file to go with the board. I installed it into mach . All the motors move fine except my X axis. Its very jittery and jumpy but thats not the strangest part. If I hit up itll go up and if I hit down it will move down but sometime when I hit up or down it will go the complete other direction . Not always..
So what do you guys think?

Offline Hood

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Re: odd motor movement
« Reply #1 on: November 02, 2013, 08:47:54 PM »
Sounds like maybe a loose direction wire but if you attach your xml I can look through that to see if there is a problem.
Hood
Re: odd motor movement
« Reply #2 on: November 03, 2013, 05:06:56 AM »
Thanks Hood here is the XML file to get people started that im using.

Offline Hood

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Re: odd motor movement
« Reply #3 on: November 03, 2013, 05:21:30 AM »
Is that the xml you got from CNC4PC? Really need the one you are using as there may have been changes made, so no point in looking at one that is not exactly the same as your setup.
Hood
Re: odd motor movement
« Reply #4 on: November 03, 2013, 04:49:44 PM »
Ya that was the one I got from CNC4PC
Any ways you were right it was a loose wire.
Ill tell ya you would think the RJ45 adapters would be easier to wire up but its really not the case . All the wires at some point have loosened up. \
Thanks for the help as all ways .

Offline Hood

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Re: odd motor movement
« Reply #5 on: November 03, 2013, 05:08:14 PM »
I could not think of a worse method of connecting Step/Dir signals than RJ45 cables. Fine if you have quality pre-made cables and quality sockets but if your sockets and cables are not top quality then you will have plenty problems.
Hood