My Shapeoko 3 has a board Version 2.2 and when I purchased it a few years ago, I paid extra for the homing switches, which were installed upon assembly. I just got a Touch probe as a gift, so my steps were:
Flash the GRBL to 1.1f (no problem)
Install Carbide Motion 4 (problems)
Install touch probe (problem)
Before I even started Step #3, the new Carbide Motion was not working. A few things:
– When I try to “Initialize Machine,” the z-axis bottoms out (sometimes toward the spoil board, sometimes upwards), and produces a red bar with ERROR (3) Homing Cycle Failed and ERROR (4) GRB Error Homing Failed, couldn’t find Limit Switch
– If these errors happen, I cannot get Carbide Motion to do anything.
– In the installation instructions, the Settings menu has two buttons that I DO NOT SEE on my computer. The missing buttons are “toggle shapeoko homing” and “enter sparkfun code” There is nothing in their place, they are simply not present on my screen.
Regarding the Touch Probe install, my Limit Switch wiring looks exactly like this:
As you can see, the wide white wiring harness takes up the slots that the Touch Probe wants to occupy. What am I supposed to do here?
If the limit switches are faulty or something (though they were working before this update), how can I test for their function? Is it possible to switch homing off? What do I do? As of now, I’ve basically disabled my machine!
Quick update: In Carbide Motion, I am able to Connect, go to Settings, click MDI, and even load a file BUT ONLY if I don’t click JOG. Once I click Jog, I cannot leave the screen saying:
Initialize machine
Press button below to begin homing cycle
Clicking this has only resulted in the Z-axis crashing into the top-mounted home button, making that awful crunching noise.
OK hang on. I just figured out that the log shows when a home switch is pressed. Looks like the X and Y work, but Z axis is simply not registering. I was able to confirm by swapping the parts, so somehow this switch went bad while fiddling with the update (or maybe it happened earlier and I didn’t notice?).
Anyway, I guess I need to replace a switch – how do I source new ones?
Sorry to hear about the broken switch.
I guess @WillAdams will tell you to go and contact support@carbide3d.com and you should, they’ll help you with this. The Wiki has some links to source replacement switches too (here), that Omron reference on Digikey looks right.
I had a similar problem with my Z homing switch, it was stuck on. I removed it then I was able to get it unstuck by playing with the spring loaded end and it popped out. I reinstalled it and it worked. It may continue to work for a while but you should probably order a replacement switch from carbide.
Although these are pretty high quality sealed switches, they don’t have much overtravel, which means they can be pretty easily damaged if “pushed too far” - good news is that they’re cheap and easy to replace.