Homex - and I am getting fed up
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Hi all,
OK, so I have a weird issue. When I click on the Homex; it commences the homing, but when it hits the mechanical endstop switch at the minimum position; sometimes it recognises it and everything is fine, but mostly it looks like the motor/head is throwing a tantrum and going 'grrrrrr' asif it does not pick up the end stop and tries to go past it. Using M119, the sensing that I get from the endstops are all sensing correctly.
I have gone now so far as to copy the homey.g to homex.g and modified it where needed.
Here is my config file (endstop section):
; Endstops
M574 X1 S1 P"!xstop" ; x-end stop with inverse operation
M574 Y1 S1 P"!ystop" ; y-end stop with inverse operation
M574 Z1 S2 ; z-end stop with inverse operationAnd here is my homex.g:
G91 ; relative mode
G92 X100 Y100 Z100
G1 Z4 F200 ; raise head to avoid dragging nozzle over the bed
G1 X-300 H1 F2000 ; move up to 240mm in the -X direction, stopping if the homing switch is triggered
G1 X4 F600 ; move slowly 4mm in the +X direction
G1 X-10 H1 F360 ; move slowly 10mm in the -X direction, stopping at the homing switch
G1 Z-4 F200 ; lower the head again
G90 ; back to absolute modeAt this point I am contemplating taking the duet out and putting in a different board. I don't mind struggling with something, but when it comes to inconsistency, it drives me up the wall!
PLEASE HELP!
Tinus
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firmware version?
Your config looks ok.
You could test a different endstop input. Plug it into e0stop and change to
M574 X1 S1 P"!e0stop"Most likely it's a wiring problem, maybe interference?
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Hi!
Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.2.2 (2021-02-11)
Duet WiFi Server Version: 1.25Note: You can install updates on the System page.
I will test with the e0 stop....
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@alankilian it's a mechanical micro switch wired between common and normally open.
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OK tried, no luck with either of the suggestions....
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Do they have the option of being wired normally closed?
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This post is deleted! -
yes I can change it to normally closed; however, the Y end stop is EXACTLY the same, and it is not giving any kind of issues. 100% reliable. I have already swapped out the X end stop switch for a different one too, and the issue is still there.
Next, I guess will be replacing the wiring?
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@Reefwarrior said in Homex - and I am getting fed up:
Next, I guess will be replacing the wiring?
Maybe. Or at least separating it from any other wiring it runs along.
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@Phaedrux Oh brother, rookie mistake. Broken wire. Tested continuity and then realized it was broken - I'm such an idiot!
A bit of a different Q, but still on this (kinda); what AWG wire do you use for the end stops? (And for the rest of the electronics?)
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Just run of the mill 22AWG stuff off amazon that comes in a selection of colors on little spools.
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@Phaedrux Cool thank you
Will have a look at it - I suspect the wire I was/am using is too thin - where I crimp it, sometimes it brakes off - and that means looking for trouble. The other wire I have is too thick - wonderful living in Africa!PLEASE mark this also as Solved?
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@Reefwarrior said in Homex - and I am getting fed up:
@Phaedrux Cool thank you
Will have a look at it - I suspect the wire I was/am using is too thin - where I crimp it, sometimes it brakes off - and that means looking for trouble. The other wire I have is too thick - wonderful living in Africa!Your crimping technique or crimping tools are much more likely to cause the issue you are seeing. You should easily be able to crimp down to 30 ga but may have to bend over the exposed wire in order to get good holding. No matter what, the wire should never 'break off'. How are you stripping the insulation? I find that if you use a 'universal' tool or a stripper that electricians use, you are likely to nick strands which then results in a stress point that cause the wire to break. I use a tool that has different but calibrated cutter openings so the chance of nicking a wire is reduced a lot .... but you can still damage it with poor technique.
If you are over-crimping by using a universal crimp tool, you can easily kill the wire too.
'Engineer' brand hand tools for crimping and stripping are a good investment to reduce frustration! -
@Reefwarrior I'm glad you got it figured out!
It can get VERY frustrating, and when people make a bunch of suggestions that you've already tried, it gets even more frustrating.
But you kept looking and found it!
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@alankilian Yep
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@jens55 I suspect it is the quality of cable. The plastic surrounding the threads are not very pliable like silicone wire - it's a kind of hard plastic. I strip the wires using a sharp knife.
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I strip the wires using a sharp knife.
<shudder> ..... bad ju ju all around !
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@Reefwarrior said in Homex - and I am getting fed up:
I strip the wires using a sharp knife.
I suddenly am not sympathetic.
Frederick
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I met Ben Heck in person and he stripped some wire with his fingernails. Never meet your heroes.
