I had a try at setting my laser cutter to start from the middle to laser a awkawd shape and raise it little bit on blocks. come to do a test to see where the laser will start so i can position it to start a logo. Clicked on the start from job origin which shows 9 circles to start from. Found that it wasn’t working so went back to to original circle and clicked on home, go to origin but found when the laser head went back to the original left hand corner i always used the homing and belt started making a loud clicking noise so had to turn of machine. Looks like the X Y has gone past its normal stop, usual it come to the corner to start a cut with no noise. Is their a reset mode where the machine goes back to normal, looks like i have messed it up.
If you have homing switches then seems one not tripping.
If no homing switches then shut off machine place laser at corner and restart machine.
For the Ortur, assuming that’s what you’re using here, there are physical switches on the machine (small square switches with a round plastic “post” that sticks out). The laser head moves and when it presses against a switch that direction should stop moving. If you have a cable or something else physically in the way, preventing the carriage or laser head from making contact with the switch, that could cause what you’re seeing.
So i have a Ortur laser master 3, now when i log in on lightburn software design page 400 x400 square i then switch on the machine and the laser section and XY arm which is in the corner against the screw stops as home now starts clicking. I checked for any interference with the laser and arm going home which i found non. I moved the laser unit back towards the middle and it homed into the corner but starts to click when it gets there as if its programmed to move past the home corner rather that stopping. I switch off the laser machine and right clicked on Home on the computer screen to see if the homing could be reset. Doubt it would be the stop switches but most probably i may have set it to the centre of the 400 x 400 work area as i wanted to start in the middle at the green start point which moved there and moved it back to the left corner where i usual start. Did have a look on the tools and settings logo on the top bar but not sure how i would set the home again.
HOME
- Trolley and gantry rapid move towards the switches.
- When the switches are hit, the machine will stop and reverse. It may not reverse until both switches are found.
- The machine will pull off the switches slowly until the switches open.
- The machine will reverse back onto the switches very slowly until the switches close.
- The machine will reverse and pull off the switches slowly until they open.
- The controller establishes this as the Home position. It is usually shown as something very close to 0,0 as the position if the controller is set for the first quadrant. If it shows large numbers, this can be changed with the G10 command.
There is no other version of the Home cycle. If you have limit switches, this is how it should work.
If you do not have limit switches, where it powers up is the Origin. Home is a machine mechanical function. Origin is a software design position. They are not the same thing.
If it fails on Step #2, you either have a bad switch or broken wire.
Seeing as i moved the green start position to the middle of the 400x 400 work area i may have not set it back to the start position thinking i did, back to the bottom left. So the position X and Y is most probably a position number rather than X 0.00 Y0.00 and the program is moving the laser and gantry further past the bottom left 0 position and needs to be reset. Am i correct.
Yes i remember the laser and gantry unit moving a fraction back from its final position.
So to reset the homing position do i go into the tool bar and click on the spanner cog logo to reset?
Use the Home button in the Laser window to re-Home the machine.
Curious, are you using Absolute Coords for your Start from:?
Are you talking about the Device Settings window?
I had some time to turn over the machine and look at the belts but found there were two that pull or push the main gantry not the laser head left and right, separate belt, thought there was one. One of these belts had come out of its toothed grove, which can easily push out. So i popped it back in and ran the machine. Now all working the laser cuts the design.
Now i find that the laser seems to start slightly different and not in the left hand corner where i would like it to start. I may have to home in the corner, it seems the green homing marker follows the design, need to reset it back.
You have to do this once after powering up only. After that, do not move any parts by hand. Use Absolute Coords and you should see a good degree of repeatability.
With limit switckes, the Home position is not adjustable. You have to adjust your project to allow for this start position. With absolute coordinates and Home switches, your Lightburn work space and laser work area will match.
Put in absolute coords, now it works perfectly. Many thanks for your help.