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vmax100uk
03-07-2016, 11:23 AM
Well my first go at a home cnc has got off to a bad start.
Bought a conversion kit for my little Proxxon mf70. Spent all day building it up only to blow the controller.
I got the kit from a company called gocnc.de and the instructions are not brilliant being just a load of pictures rather than anything written. To make matters worse the controller was slightly different to the one in the pic, hence i connected a wire to the wrong terminal and blew the board.
Has anyone had any experience of fitting one of these kits as im not 500 out of pocket with a ruined miller.

m_c
03-07-2016, 04:00 PM
I'm going to guess you've bought some variation of this kit - http://abcnc.de/shop/en/cnc-router/385/proxxon-mf-70-cnc-custom-kit

In which case all you should need is a new Control Card Stepp 2500 from this page - http://abcnc.de/shop/en/cnc-acessories/cnc-controller/

vmax100uk
03-07-2016, 05:19 PM
Yes that's the kit, but the controller was slightly different to the one shown on the site.

magicniner
03-07-2016, 05:25 PM
the controller was slightly different to the one in the pic, hence i connected a wire to the wrong terminal and blew the board.

If they provided the wrong instructions for the supplied hardware and the instructions resulted in damage then surely they should replace the damaged parts FOC?

John S
03-07-2016, 05:32 PM
Post a picture of the board.
Those simple 3 axis boards are about 35 - 40 a pop and not 99 euro's but as said get them to replace it.

vmax100uk
03-07-2016, 05:34 PM
That's what I've put in an email to them but they are the rudest bunch of people I've ever had to deal with so I don't think they are going to play ball unless I get my credit card involved.

vmax100uk
03-07-2016, 05:36 PM
Ok will do once I've got it off the machine.

magicniner
03-07-2016, 05:39 PM
they are the rudest bunch of people I've ever had to deal with .

Provide your CC company with images of the instructions and of the parts shipped which are not identical to the instructions and for good measure any particularly unhelpful or rude emails from the seller and stick a back-charge to them, it sounds like they deserve it!

John S
03-07-2016, 05:42 PM
So if you are on your own on this one and given it's a very low rated unit for the Proxon, I'd be happier with a simple breakout board like this.

http://www.ebay.co.uk/itm/272041782661

And 3 separate drivers like these.

http://www.ebay.co.uk/itm/361465386090

So 16 will get you going again and more reliable, if a driver fries you juts swap it out whereas on the all in one board anything goes wrong it's toast.
Best at 3.81 to get a spare driver or even 2

Clive S
03-07-2016, 06:37 PM
That is a superb solution I have used those drives and as long as you keep the power supply to about 24V they are fine despite all the bad press that they have had, just don't run them at a higher voltage.

vmax100uk
03-07-2016, 08:03 PM
On the left is what they supplied and on the right is the manual. 18852

magicniner
03-07-2016, 08:15 PM
And you asked about the difference before guessing and wiring it up anyway?

vmax100uk
03-07-2016, 08:17 PM
And you asked about the difference before guessing and wiring it up anyway?
Im afraid i didnt so thats where ive shot myself in the foot.

m_c
03-07-2016, 08:23 PM
Having seen the diagrams, I've got to ask, what exactly did you wire up wrong?

Both those seem very similar. Left has two extra terminals for connecting to Pin 12, and the right shows an E-stop switch, a power switch, and a DC jack, however the basic connections are the same.

vmax100uk
03-07-2016, 08:35 PM
18853
Having seen the diagrams, I've got to ask, what exactly did you wire up wrong?

Both those seem very similar. Left has two extra terminals for connecting to Pin 12, and the right shows an E-stop switch, a power switch, and a DC jack, however the basic connections are the same.
I accidentally connected the two wires from the motor to the top two rather than the bottom. Also if i hadn't got that bit wrong i was still left with not knowing where to connect the emergency stop wires as the part supplied is minus the connector shown in the parts check list.

vmax100uk
03-07-2016, 08:42 PM
To be honest if gocnc weren't so bad at answering your emails and showed a bit more interest in helping out customers then i would have taken time out to double check things.
At the end of the day they should understand that this type of kit is probably going to be sold to the inexperienced hobby user, so i feel that if your going to update parts you should supply idiot proof instructions as we're not all electronic geniuses.

vmax100uk
16-07-2016, 12:11 PM
Ok guys after finally getting my machine built and running ive now discovered that the software that comes with the usb control box with this kit will only run files that are HPGL format.
I only need to do cut outs etc in flat plate, so can anyone recommend a nice simple to use program that i can use to create the dxf and add the machinings to. I was hoping to use something like Vcarve but i dont think it saves as a HPGL file.

magicniner
17-07-2016, 01:01 AM
http://www.vectric.com/products/compare.html

FAQ at the bottom of the page, 3rd Q & A

vmax100uk
17-07-2016, 10:25 AM
http://www.vectric.com/products/compare.html

FAQ at the bottom of the page, 3rd Q & A
Cheers for that.
I did try the trail software and its perfect for what i need, just wasn't sure it would save in the format i need. Think I'll take the plunge and buy the 2D desktop version.

cropwell
17-07-2016, 12:00 PM
https://www.coolutils.com/online/DXF-to-HPGL