Topics created by nicaris

@nicaris After homing X and Y, your homeall.g tries to move to the bed centre:

; home Z var xCenter = move.compensation.probeGrid.mins[0] + (move.compensation.probeGrid.maxs[0] - move.compensation.probeGrid.mins[0]) / 2 - sensors.probes[0].offsets[0] var yCenter = move.compensation.probeGrid.mins[1] + (move.compensation.probeGrid.maxs[1] - move.compensation.probeGrid.mins[1]) / 2 - sensors.probes[0].offsets[1] G1 X{var.xCenter} Y{var.yCenter} F6000 ; go to bed centre G30 ; probe the bed

Does it move to the centre?

You have a BLTouch configured. What reading do you see in DWC for 'Z-Probe'? It should be '0'. Does the probe pin deploy? If not see https://docs.duet3d.com/User_manual/Troubleshooting/BLTouch_troubleshooting

Test the direction of movement of the Z axis, see https://docs.duet3d.com/en/How_to_guides/Commissioning#h-10-check-stepper-motors
If you command a positive move of the Z axis, the bed should move away from the nozzle. Does it? If not, change the direction of the motor by changing the S parameter of the M569 command of the corresponding motor(s).

Please post the response to M122, so we can see which firmware version you are using.

Ian

@nicaris RRF does support reading the tachos on 3-wire fans provided they are switched fully on or off only, and on 4-wire fans.

@nicaris remove the T100 and set H-1

@nicaris said in Height Map has a substantial Z offset:

@nicaris
So at the moment the height map is saved in heightmap.csv
I create a file called mesh.g for that ? and remove the m401 and m402 from bed.g

The command G29 will run mesh.g.

The commands used to create the heightmap belong in mesh.g.

So mesh,g would be something like this:

; *** THIS EXAMPLE ASSUMES THE PRINTER HAS BEEN HOMED - IT COULD INCLUDE HOMING IF DESIRED *** M290 R0 S0 ; cancel baby stepping G1 Xaaa Ybbb ; move probe to center of bed - change aaa, bbb as needed for your printer G30 ; set the Z=0 datum M557 Xccc:ddd Yeee:fff P20 ; define 400 point mesh - change ccc, ddd, eee, fff as needed for your printer G29 S0 ; probe the bed and create the heightmap.csv file

@quinn He was using P5 M280 P5 S10 ; deploy BLTouch But in RRF3 it should be P0 (or whatever servo pin you've defined in the M950 command for the bltouch servo)