December 12, 2017 at 3:27 pm #49448
Yeah, sorry but that’s how I roll. I can export a metric set if you need.December 12, 2017 at 3:40 pm #49451
And here’s a video showing the Z axis with dual endstops….December 12, 2017 at 3:46 pm #49452
Dude, Greg, you just absolutely made my day. Thank you for taking the time to make the video, and the endstop brackets. I have to link this in the article. Dam, so cool, I haven’t gotten to try it out yet myself!December 12, 2017 at 4:01 pm #49455
Naa, just throw a note on thingiverse that if their slicer is set for mm, that they need to scale up 2540%December 12, 2017 at 7:12 pm #49457
That’s awesome. Thanks. That is a great build, and the video shows so much detail. Just seeing it climb into shape is so great.December 13, 2017 at 5:32 pm #49484
I’m from Russia and use Google for translation, I apologize in advance.
I make a CNC with a milling cutter on a table with a size of 2000 to 3000, on each axis there will be two motors, very much skewed along the axes, so there is an idea to start work after each motor is leveled by endstops.
Hence the question: is it possible to add dual endstops to the firmware on the X and Y axes?
I really hope for help, thank you in advance.
Sorry for the trouble, badly looking …
I’ll be thereDecember 14, 2017 at 7:57 am #49496
@adam, Just so you know, this is the “advanced” way to do that. The basic way is to use a square, and force the axes to be square before enabling the steppers. Many users have gotten a lot of work done with the manual procedure. This dual endstop feature is not a requirement for most CNC work.
The dual endstops are, however, very cool, and will make things easier.
The manual method is very well proven. If you run into trouble with the firmware, don’t sweat it, and just use the manual method.
I hope that translates well through google. 🙂December 15, 2017 at 12:05 am #49519
Thank you @jeffeb3. Already asked the controller and on the table like everything is working as it should, now I will hang on the frame and debug. I’m just afraid that with such a pipe size in the process of work, the skew of the square is possible which is now perfectly displayed, therefore decided to insure and go this way.December 25, 2017 at 6:57 am #50012
Went ahead and worked out the M666 commands to square up the X and Z axis’ and it worked perfect. Did this after putting on a guiderail on both long sides to help keep the gantry from shifting under cutting load. I didn’t want the side assemblies rubbing on the sides of the table and creating drag, so the wheels now ride in this channel…it’s wall standard for adjustable shelving. 1/2″ tall and 1/2″ wide and keeps the wheels up out of the sawdust.
Attachments:December 25, 2017 at 7:04 am #50014
Interesting. I really feel like I need to revisit the LowRider soon. I think I might have gotten the some of the physics reversed and could make it better. I love using it and each time I do I have a new idea. All of you guys keep trying new things as well so I think we can all push it further.December 25, 2017 at 8:30 am #50015
I like that idea. Mind has a track on the inside, but the only thing keeping it in is the tension from the pipes. This seems like it’s a good idea too.
And Ryan, if you want to use any of my ideas, you can pay me in free design work. You’ve got quite a few credits already built up.December 25, 2017 at 8:41 am #50016
You all can send me a bill and I will get to it in the order received as soon as I get winning lottery ticket.
You know me I can not leave good enough alone, I have a head full of ideas for both cnc’s (even the zenxy). I want to make them better.December 25, 2017 at 9:51 am #50022
I wonder why M666 works for some people and not others.December 25, 2017 at 11:56 am #50026
I did have to enable EEPROM in the dual endstop version of the firmware before it would work.December 25, 2017 at 12:23 pm #50027
It should work as flashed.December 25, 2017 at 12:24 pm #50028
Hmmm, I will check again Wed when the new batch of boards get here, maybe I somehow changed that.December 25, 2017 at 4:04 pm #50031
Wow!!! love the tracks using the big box off the shelf parts!!! I live for alternative uses for parts that can be picked up any time at almost any big box store. Amazon and eBay are worthless when its 9pm Friday night and, like me, waiting for UPS or the mail to maybe show up Monday morning just does NOT cut it!!!
Anyway now that the Holidays are over and the pressure is off to get gifts made I’m going to go ahead and give the dual end stops a try.
Looking forward to the headache! Other than what has been laid out in this thread are there any resources that might help one get through the process of figuring it all out and working through the kinks with a little more ease?December 25, 2017 at 4:44 pm #50032
I’ve got my dual Endstops working perfectly now.
Things to watch for/consider from my trials…
Make sure EEPROM is enabled.
Set one stop a little back from the other so software can adjust for you.
Use fixed, not adjustable stops. Just easier to make them.
Use M500 to write the M666 X and Z adjustments to EEPROM so they are there the next time you start it up.
Make sure your axis’ track repeatedly. That’s why I added the tracks to move.December 25, 2017 at 5:42 pm #50036
The eeprom can be a headache, remember to clear it if you change firmware. I am a little surprised it doesn’t work without it (at least until a restart).December 25, 2017 at 8:06 pm #50040January 8, 2019 at 9:12 am #82685
Is there a dual endstop firmware available for the mini rambo with the lowrider somewhere? Also, Can a touch plate still be used? (I believe the Y max would still be available, can marlin firmware support that?)January 8, 2019 at 9:38 am #82693
Is there a dual endstop firmware available for the mini rambo with the lowrider somewhere?
No you need to make the edits yourself, this is not common as there are hard stops built in.
Can a touch plate still be used? (I believe the Y max would still be available, can marlin firmware support that?)
Yes, but you would still use Z min. It has nothing to do with dual.
1 user thanked author for this post.January 9, 2019 at 2:08 pm #82976
I thought the mini was one driver short of being able to do dual endstops?January 9, 2019 at 2:12 pm #82977
It can do dual on one axis.January 27, 2019 at 5:08 pm #86058
TomParticipantJanuary 27, 2019 at 5:20 pm #86062
Tom – Those rails are Unistrut.January 27, 2019 at 5:55 pm #86077
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