Hi! I was using the calibration wizard on my laptop controller for my 1010 style cnc. I use the black box. I forget which model but it's the one before the new LED one came out. And an openbuilds interface. I usually use the interface to run my gcode and only ever used the software with my laptop for my initial calibration. Recently I noticed my cuts we not accurate and after using the wizard today I calibrated the x and y (both were off by 1mm) and when I got the the z I noticed it was way off. I did what I normally do like how it prompts me. Mark a before line then another after the wizard moves it. I tell it to move 50mm and when I measure it it reads something like 21.1mm. I punch in the actual measurement. And then jog my machine 10mm to see if it is indeed 10mm and it moved 15ish mm not 10 Do the wizard again have it move 50 and when I physically measure it it's way off still. So I've done it like 10 times and it's just not working lol. The x and y are fine. When I jog 10mm it's 10mm and when I jog 50 for the x and y it is 50. Am I doing something wrong or is it just not taking the calibration for the z? It looks like it does change the value since everytime I calibrate it it's a different number when I jog 10mm. Sometimes more than 10mm sometimes less. Has anyone else had this issue? Should I reinstall the software or reboot everything and see what happens? Thanks
Sounds like either loose setscrews on shaft coupler, wiring (break intermittent on one of the 4 wires) or unexpected Grbl Settings change (max rate / acceleration - any recall of that being changed recently)
I haven't checked the set screws but when I visually observed it it looked pretty solid with no slipping when it did move. And when I would put in the new calibration sometimes it would be so off when I hit 10mm down z jog it would go all the way to the limit switch which makes me thing it's recieving an inaccurate command. I can check the wiring for any breaks too. I did check the connections where the wore is attached to the plug and they all seemed solid and even redid them to be safe. I haven't messed with any settings and my black box and interface is up to date. I did install the newest controller app and tried it with that. It seems better but when I go to calibrate it it's usually off by 1mm too much or too little or it will be off by like 30mm. With the new software when I did the wizard to have it move up 50mm it went to 51 and when I corrected it and went to test it again with the wizard with the same 50mm command it was like 20mm instead so idk where the math isint matching for the wizard lol
I'll double check my set screws and try a different wire since I have some spares. What are somethings I should check with the grbl settings to see if it's correct or not?
1) Check your own memory - do you remember changing anything? 2) Otherwise post a Grbl Settings backup for review (Backup settings button on Grbl Settings tab in CONTROL)
Sounds good, I also reset my grbl and it looksblike it's calibrating fine now. But during my last calibration wizard with the z axis it looks like it can't connect to my black box at all now and now my interface says it can't connect to the grbl when I plug it in lol
Okay so now I have an issue with connecting my pc to the black box. It says no firmware detected using the openbuilds control software
Shorts in cabling somewhere? Could kill the BlackBox. See section 6.3.1 of the FAQ page the onscreen error in CONTROL was pointing you to: docs:blackbox-x32:faq-usb-connection-failed [OpenBuilds Documentation]
I reloaded my original back up and it seems to be working now. It was strange because I didn't touch any of the setting and after I did another calibration wizard round it would not respond to jog commands. Then I reset the black box and reconnected and still wouldn't connect while the black box was receiving power from the power supply. I was able to connect when I just plugged it into my computer and made sure I updated the drivers on it and my interface and still had the same problem till I just used my old back up. After the backup it is calibrating ok now. Its just when i try to fine tune it when its half a mm off that i run into trouble. Like when using the wizard it will tell it to move 100mm but I measure 110mm. So I punch it it. Do the wizard again and it tells it to move 100 and I measure 99.5mm punch it in. Do the wizard again and it moves it like 120 or something way off even though it was only 0.5mm off the last time.
Settings can't affect connection, so do go over that wiring, before its too late Still either stalling (Acceleration/Max Rate set too high) or mechanical slipping (it thinks it moved 120mm, but 20mm of that was slipping/stalling and not actually moving - its basing the calibration math on 120mm, but it didn't do that move in reality. Calibration comes AFTER reliability)
Cool, I did check my connections and fittings and that looked good, but it doesn't hurt to check again. What's the recommended acceleration/max rate? I just used the stock settings for the 1010 machine
Stock is on the conservative end (can usually tune upward) unless there are any 3rd party parts involved (different steppers, different PSU, heavier than normal spindle) or if something is binding up (Nutblocks too tight, wheels too tight etc) For reference though Grbl v1.1 Configuration and Grbl v1.1 Configuration
Looks like my $120, $121, $122 is 150mm/sec² and my $110, $111 and $112 are 2500mm/min. Looks like it says I need to slowly increase the speed for each axis till the motor stalls to get the max number. I'm using the nema 23 stepper motors from openbuilds. I haven't noticed any stalling when running programs before I am using a pretty big Milwaukee router for a spindle but I'll try and see if the limits are close to what is already the default. And I'll double check my fasteners and hardware Also thanks for being patient I only have time to trouble shoot on my weekends lol
Last minute thought: You are remembering to RESET (reboots the BlackBox) after applying a calibration change. Before testing and retrying calibration? You need to give the controller a chance to boot up fresh with the changed settings first?
That Grbl Wiki is sometimes a good read - not be skipped Grbl v1.1 Configuration and all other pages of the same Wiki
Well you'll never guess what happened, it works! I'll definitely give it a read and thanks another for you patience
