I am brand new to CNC and have just assembled my 30x30 longmill MK2. I am also using gsender. I am unable to get the probe to pass the connectivity test. I have checked the wiring and have tested continuity at the magnet and banana clip. Both showing ok. There is a small orange light showing in the controller box when I touch the bit with the touch plate but I don’t get the green go/pass to start the job?
Is there a setting that I have turned off?
Hey Mike,
Welcome to the dungeon.
When I got my mill my probe wasn’t properly working either. After some head scratching I opened the magnetic connector and found the the AMP connector was crimped on the isolation in stead of the conductor. After that it worked as it should… for a while.
I now have a probe that might work, so I’m guessing I have a bad wire somewhere. I’ve virtually stopped using the probe for I mostly zero at the cebtre of my projects and us a light to zero my z axis.
When I encounter problems my to goto place is the youtube channel of sienci and find a tut about where my problem is to see if I’m missed out on something. It helped me tackle a lot of problems. Even problems I didn’t knew I had.
Here’s a realy old one on the touch probe that I think doesn’t tell you anything new but… meh… can’t hurt either.
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Thank you for the tip. I will check the magnet. will give the manual zero a go and see how that works out
If you are implying that your brand new MK2 is having a problem, why haven’t you contacted Sienci under their warranty?
I’m sure they are more than eager to get that fixed.
@Last3 I use the centre of my material to set XY0 also. However, keep in mind that if you lose zeroe for any reason - you hit the gantry, the machine freezes, the power goes out, a lighting bolt hits your Long Mill - you will never get your XY0 back to the exact spot to start again or continue. I have found this out the hard way many times. That said, I still do this more often than not. 
The beauty of the touchplate is that if any of these “accidents” happen, you can re-zero to the exact spot and continue.
The touch plate is a pretty simple piece of kit. I’m sure that Sienci will be able to get you fixed up.
Hey Grant,
I too have lost centre xyzeroes a lot. Top mitigate this problem (and to align laser with the mill, I dip my 60deg bit into either the project or in my wasteboard on a known x or y distance from the xyzero. This way I can find my centre zero back no matter what exploded as long as the project didn’t move.
I dare to say it is faster than using probe.
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@Spamming_Eddie That’s a good process. I have a cross hair laser on my LM so I can get back to damn near perfect, too. I simply wanted to acquaint the new user to what can go wrong.
We can agree to disagree on whether our methods are faster than using the touchplate. Since I’m a lowly hobbyist and not on the clock, I’m not too concerned about the added couple of minutes. For me, the touchplate has its place.
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Have reached out. Not open on a stat holiday. Thought I’d ask the community for a possible quick fix.
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A post was merged into an existing topic: Cross hair laser module for zeroing