June 28, 2019 at 7:31 am #104582
I am adding a z-probe to my lowrider. I purchased everything from v1, mini rambo board with lcd. Wondering what, if anything will need to be changed in the firmware to get the z-probe to work, and the process for setting z height using the z-probe. Any help is appreciated.June 28, 2019 at 9:51 am #104591
Nope, nothing needs to be changed. Tool height will depend on the probe height.June 28, 2019 at 9:58 am #104592
Do I need to input the probe thickness into the firmware?June 28, 2019 at 10:11 am #104597
You can manually add it to the gcode like I do and have shown on the basics page, or you can add probe offset in the firmware.June 28, 2019 at 10:20 am #104602
ThanksJune 28, 2019 at 1:23 pm #104614
Michael. Could you document your implementation of the z probe? I’m interested in trying that on my lowrider as well.
DanJuly 1, 2019 at 6:56 am #104842
It is working. It was actually pretty simple. Well, once I realized I didn’t have it on the correct plug it was simple.
Dan, all you need to do attach the probe wires to the Z min “s” and “-” pins. then one wire to the plate and the other to alligator clips. From there it is just a g28 z gcode sent to board via repetier then a g92 z to set the z height to the thickness of your plate. You can find explanation of this on the milling basics page. I haven’t added the gcode into my file gcode yet, just playing with it. One thing to note, a couple of times I had to send the g92 z gcode multiple times before it took, so make sure to look at your LCD to verify that your z position changes from 0 to the thickness of your plate.July 1, 2019 at 7:02 am #104844
Just one more quick question for you guys. Do I need to add everything to the tool change gcode, or can I have the machine pause and send the gcode to set z directly with repetier then have the job continue. The reason I ask is that I had a couple of instances where I had to send the g92 command multiple time before it took and would like to be able to make sure it is right before continuing the job. Although I believe if I add a probe offset in the firmware this should alleviate the issue. I am a little nervous about messing with the firmware though as I don’t really have any experience there and would hate to mess it up.July 1, 2019 at 7:12 am #104845
If I add a z probe offset to the firmware, would it be a + or – value?
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