I looked for another thread to add to but didn’t see one.
@SteveO I have one for a Tuesday meeting.I posting this as I am sure the moment I do I will finally see what I screwed up.
I’m working on a simple two-axis machine. My initial thought was to use GRBL on an UNO with CNC Shield with an Octopi with the GRBL plugin. I am now questioning this along with other life decisions.
I got my assembly designed and printed all the parts. I got the Pi and UNO loaded and and running. I got the machine jogging yesterday but ran into a snag. I started getting an error when I tried to home via octopi. The GRBL plugin is fairly limited so I started using UGS to try to get the bug killed.
Xaxis motor and switch:
I edited the config.h file to disable the Z axis homing. Below is default…not what it looked like afterward. I uncommented 112,113 while commenting 105,106.
The problem is the machine will not try to home. I get an error each time I try to enable homing. Going through USG’s software I enable the switches, then enable homing. In the end the software says HOMED when it hasn’t moved. I then get an error when I try to jog it. I have to set $21 (hard limits enable), 22 (home cycle enable), and 23 (home direction invert) to 0 to clear the error and regain motion.
I have tried every variable I can think of.
- Started using NO switches, tried NC.
- Tried using UGS’s setup wizard to setup homing.
- Inverted $5 (invert limit pins)
- Tried 0,1,2,3 on $23 (homing direction input) This was changed by UGS setup.
- Tried lowering $110,111 (max speed)
- Tried $32 1,0 (laser mode)
- I tried unplugging the switches and got the same error.
All of these netted the same result.
I tried to add Jumpers to the other switches to see if it want’s all the switches closed.
Got a different UNO and Shield to ensure hardware wasn’t a factor.
I even took the shield off to verify it wasn’t a factor.
