Dual Enstop on Y and Z Axis Configuration

LowRider CNC Troubleshooting
22

You are right, this statement was before your LRV1 reveal. The V1 might have an issue, I was confident everyone had moved on from there.

Again, does not happen after v1. You are trying to solve a problem we fixed three versions ago.

Sorry for all the confusion. V2-4 do not have any of these issues

23

No problem. I was under the impression that you knew I was talking about V1 because I mentioned it in my opening post. Anyways I still believe my suggestion still worth for any type of CNC having dual endstops for the physical integrity and accuracy of CNC job. Any making it optional will be at users choice if they want it or not.

I was looking at the V2 yesterday and I have made some changes to the Y plate to have a bottom wheel to hold the table. Moved the stepper towards the one edge and created slot near the other edge. Used V1 lead screw nut holder as V2 nut wouldn’t be usable anymore. Calculated all distances, positions to confirm everything will be working.

I will cut it after new year. Very busy at the moment with other things.

Happy Christmas and new year to everyone and @vicious1 thanks again for the tip about gcode command to adjust dual endstops positions after homing.

24

We are mostly moving past Marlin. It would not be worth the time to develop this feature and argue that it needs to be pushed upstream. Marlin is open source and you can pay for or develop the feature if you’d like. But I doubt Ryan or the regular contributors here are going to be unterested enough to go for it.

Personally, I don’t like the idea. But I have no problems if it is a configuration variable that someone could use. I am pretty sure I would get frustrated since a failed home requires a restart. I know I can’t hit 2-3mm by eye before starting the machine. I would get annoyed more than anything.

An easier solution I can think of is some combination or procedural fixes:

  • Have a separate gcode or ending gcode that parks your machine gantry out of the way so it is less likely to get out of whack.
  • Have some physical stops (two sticks would work) to get the gantry close to square before powering it on.
  • Update to the v4. It is less likely to break.
  • If you’re having frequent problems with endstops not triggering, you should fix that or test with M119 before homing. They should be reliable enough to home every time.
1 Like
25

@jeffeb3 Thanks for your input. Which firmware we are moving to if moving past Marlin?

26

I imagine he means FluidNC or Kilpper

1 Like
27

FluidNC is what the Jackpot is using and what most recent sales are including.

Klipper is not an easy option and I see no real advantage to it for CNC.

2 Likes