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Old 12-01-2006, 03:41 PM
 
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Compared to Xylotex

Am checking to see if anyone would compare these two boards off Ebay to the 3-Axis Xylotex board for me. They are cheaper than the Xylotex in dollars but does that mean they are really cheaper in the long run.

thanks
Doug

http://cgi.ebay.com/3-AXIS-CNC-ROUTE...QQcmdZViewItem

http://cgi.ebay.com/ws/eBayISAPI.dll...DME:B:SCO:US:2
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Old 12-01-2006, 05:02 PM
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Looks like they are both based on allegro's a3977, one a tssop package the other the ked package same as Xylotex. I try to say away from critiquing others products, but looking at the visible aspects of the stepmaster, I'd stay away from it. A LONG WAYS AWAY! The other, I'd question why would you purchase from someone who sells on ebay doesn't have a support site, or supporting information when the price is so close to one that does?
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Old 12-01-2006, 05:12 PM
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Spend the little extra and go with Xylotex. You will not be dissapionted. I have purchased a Xylotex board and was impressed with the quality of the product and the support I have recieved.
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Old 12-01-2006, 09:15 PM
 
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Hi,

Pminmo may I ask why you would stay a long way from the stepmaster drive?
If you don’t want to say here would you be kind enough to send me a brief pm. would be grateful for more information.

Thanks,

John
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Old 12-02-2006, 12:20 AM
 
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I definitely appreciate the replies.

I have seen the one that is close to the same price as Xylotex, sell for much cheaper than the asking "buy now" price. Also, the fuses that on that board look like they could save some money down the road. I see in some other forums where the Xylotex boards are damaged and costs the person $55 to get fixed. If these fuses did what I thought they did, they would blow before any damage would be done to the board. This may not be the case.

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DougO
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Old 12-02-2006, 07:10 AM
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DougO, have you emailed the ebay seller? I would be interested knowing what he told you.
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Old 12-02-2006, 08:56 AM
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Originally Posted by DougO View Post

Also, the fuses that on that board look like they could save some money down the road. I see in some other forums where the Xylotex boards are damaged and costs the person $55 to get fixed. If these fuses did what I thought they did, they would blow before any damage would be done to the board. This may not be the case.

thanks
DougO
Possibly, but probably the #1 and #2 most common faults taking out a 3977 isn't a condition that a fuse will blow.
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Old 12-02-2006, 10:09 AM
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Originally Posted by pminmo View Post
Possibly, but probably the #1 and #2 most common faults taking out a 3977 isn't a condition that a fuse will blow.
I think the majority of those $55 repairs are from people miswiring or disconnecting motors with the drives powered. Fuses won't help you there.
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Old 12-03-2006, 03:45 AM
 
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rcrabb - I have emailed the seller but have not heard back. I will let you know what his reply is.

I see where someone had his board messed up by static electricity. It seems static electricity would be hard to keep away from your machines. Would these fuses help in the case of static electricity?

To properly ground your CNC would you run a ground wire attached to you CNC to a ground rod driven in the ground?

thanks
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Old 12-03-2006, 09:39 AM
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Don't let those fuses be your deciding factor. I think most people damage their boards by improper installation. Those fuses are not going to protect the parrallel port side of the board. They are only going to keep you from running too much current through the board on the motor side. Static electricity can easilly damage a board but I you follow the installation instructions and everything is properly grounded you won't have any problems. Is this your first machine? What is your level with electronic circuits?
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Old 12-03-2006, 11:24 AM
 
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This is my second machine. I built the Sosylva CNC and use the Xylotex 269 oz motors and board. I bought an extra motor just in case and have gotten nervous now by reading the posts about blowing up boards. Thought I might go ahead and get a backup board just in case, also.

As far as knowledge - I can follow instructions pretty good. Do not know anything about electronics.

Last edited by DougO; 12-03-2006 at 11:26 AM. Reason: need to add comment
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Old 12-03-2006, 12:04 PM
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Originally Posted by DougO View Post
I bought an extra motor just in case and have gotten nervous now by reading the posts about blowing up boards.
Where are you reading these posts? All the posts I've ever read point to bad wiring as the #1 cause of blown boards. And I've read almost all the posts on the Xylotex support group too.
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