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    • RatRig0331undefined
      RatRig0331 @jay_s_uk
      last edited by

      @jay_s_uk too many points isn’t the issue I think, it must be too few points? With the settings first told to me it wanted to do a 13x12 grid on a 100mmx100mm print 156 points total, than I changed the min max to 50/100 and it only probed the middle and 4 conners and gave the same error

      OwenDundefined dc42undefined 2 Replies Last reply Reply Quote 0
      • OwenDundefined
        OwenD @RatRig0331
        last edited by OwenD

        @ratrig0331

        I believe the problem you are having is that I didn't allow for a probe that was offset to the other side of the extruder to mine.

        Try these files.
        I think it should sort it out.

        ;setDefaultProbePoints.g - to be called from config.g after Z probe configuration section and any time defaults need to be reset.
        
        var SafeZone = 10 ; probing won't be done closer than this amount from bed edge - adjust as required
        var defaultProbeSpacing = 50 ; default mesh grid spacing in mm - adjust as required
        
        ; shouldn't need to edit after here
        var MinReachableX = max(0,sensors.probes[0].offsets[0]) + var.SafeZone
        var MaxReachabeX = move.axes[0].max - abs(sensors.probes[0].offsets[0]) - var.SafeZone
        var MinReachableY =  max(0,sensors.probes[0].offsets[1]) + var.SafeZone
        var MaxReachabeY = move.axes[1].max - abs(sensors.probes[0].offsets[1]) - var.SafeZone
        
        M557 X{var.MinReachableX,var.MaxReachabeX} Y{var.MinReachableY,var.MaxReachabeY} S{var.defaultProbeSpacing}; define mesh grid
        ;echo "M557 X"^{var.MinReachableX}^","^{var.MaxReachabeX}, "Y"^{var.MinReachableY}^","^{var.MaxReachabeY}, "S"^{var.defaultProbeSpacing}
        if !exists(global.minProbeX)
        	global minProbeX = move.compensation.probeGrid.mins[0]
        else
        	set global.minProbeX = move.compensation.probeGrid.mins[0]
        
        if !exists(global.minProbeY)
        	global minProbeY = move.compensation.probeGrid.mins[1]
        else
        	set global.minProbeY = move.compensation.probeGrid.mins[1]
        
        if !exists(global.maxProbeX)
        	global maxProbeX = move.compensation.probeGrid.maxs[0]
        else
        	set global.maxProbeX = move.compensation.probeGrid.maxs[0]
        
        if !exists(global.maxProbeY)
        	global maxProbeY = move.compensation.probeGrid.maxs[1]
        else
        	set global.maxProbeX = move.compensation.probeGrid.maxs[1]
        
        

        revised mesh.g

        ;0:/sys/mesh.g
        ; run when G29 with no paramters is called.
        ; if this file not found G29 S0 will run
        var SafeZone = 3 ; safety margin for probing near edge.
        var MinSpace = 20 ; put default minimum spacing
        var MaxSpace = 60 ; put default maximum spacing
        
        ; these values are place holders aand will be calculated later
        var m557MinX = 40;  ; put your default here
        var m557MaxX = 180;  ; put your default here
        var m557MinY = 20;  ; put your default here
        var m557MaxY = 180;  ; put your default here
        var ProbeCenterX = 90 ; will be updated to probe centre of print
        var ProbeCenterY = 90 ; will be updated to probe centre of print
        var ProbeNumX = 8 ; put default number of probe points
        var ProbeNumY = 8 ; put default number probe points.
        
        
        var MaxProbePoints = max(floor(move.axes[0].max / var.MaxSpace),floor(move.axes[1].max / var.MaxSpace)) ; maximum points in either axis
        
        ;echo "Maximum allowed probe points is " ^ var.MaxProbePoints ^ " using max space of " ^ var.MaxSpace
        
        
        if exists(global.minProbeX)
        	if global.minProbeX < max(0,sensors.probes[0].offsets[0]) + var.SafeZone
        		echo "minProbeX (" ^ global.minProbeX ^ ") unreachable - reset to " ^ (sensors.probes[0].offsets[0] + var.SafeZone)
        		set global.minProbeX = max(0,sensors.probes[0].offsets[0]) + var.SafeZone
        	set var.m557MinX = global.minProbeX
        
        if exists(global.maxProbeX)
        	if global.maxProbeX < (global.minProbeX + (var.MinSpace*2))
        		set global.maxProbeX = (global.minProbeX + (var.MinSpace*2))
        	if global.maxProbeX > (move.axes[0].max - abs(sensors.probes[0].offsets[0]) - var.SafeZone)
        		echo "maxProbeX (" ^ global.maxProbeX ^ ") unreachable - reset to " ^ (move.axes[0].max - sensors.probes[0].offsets[0] - var.SafeZone)
        		set global.maxProbeX = move.axes[0].max - abs(sensors.probes[0].offsets[0]) - var.SafeZone
        	set var.m557MaxX = global.maxProbeX
        
        if exists(global.minProbeY)
        	if global.minProbeY < max(0,sensors.probes[0].offsets[1]) + var.SafeZone
        		echo "minProbeY (" ^ global.minProbeY ^ ") unreachable - reset to " ^ (sensors.probes[0].offsets[1] + var.SafeZone)
        		set global.minProbeY = max(0,sensors.probes[0].offsets[1]) + var.SafeZone
        	set var.m557MinY = global.minProbeY
        
        
        if exists(global.maxProbeY)
        	if global.maxProbeY < (global.minProbeY + (var.MinSpace*2))
        		set global.maxProbeY = (global.minProbeY + (var.MinSpace*2))
        	if global.maxProbeY > (move.axes[1].max - abs(sensors.probes[0].offsets[1]) - var.SafeZone)
        		echo "maxProbeY (" ^ global.maxProbeY ^ ") unreachable - reset to " ^ (move.axes[1].max - sensors.probes[0].offsets[1] - var.SafeZone)
        		set global.maxProbeY = (move.axes[1].max - abs(sensors.probes[0].offsets[1]) - var.SafeZone)
        	set var.m557MaxY = global.maxProbeY
        
        echo "Probing grid - X" ^ var.m557MinX ^ ":" ^ var.m557MaxX ^ " Y" ^ var.m557MinY ^ ":" ^ var.m557MaxY
        
        var MinProbesX = floor((var.m557MaxX - var.m557MinX) / var.MaxSpace)
        ;echo "Min Probes X is " ^ var.MinProbesX
        
        var MaxProbesX = floor((var.m557MaxX - var.m557MinX) / var.MinSpace)
        ;echo "Max Probes X is " ^ var.MaxProbesX
        
        set var.ProbeNumX = min(var.MaxProbePoints,var.MaxProbesX)
        
        var MinProbesY = floor((var.m557MaxY - var.m557MinY) / var.MaxSpace)
        ;echo "Min Probes Y is " ^ var.MinProbesY
        
        var MaxProbesY = floor((var.m557MaxY - var.m557MinY) / var.MinSpace)
        ;echo "Max Probes Y is " ^ var.MaxProbesY
        
        set var.ProbeNumY = min(var.MaxProbePoints,var.MaxProbesY)
        
        ; sanity check probe points
        if var.ProbeNumX<2
        	set var.ProbeNumX=2
        if var.ProbeNumY<2
        	set var.ProbeNumY=2
        
        if var.ProbeNumX > var.MaxProbePoints
        	set var.ProbeNumX = var.MaxProbePoints
        
        if var.ProbeNumY > var.MaxProbePoints
        	set var.ProbeNumY = var.MaxProbePoints
        
        if (var.ProbeNumX * var.ProbeNumY) > 441
        	if var.ProbeNumX > 21
        		set var.ProbeNumX = 21
        		echo "Too many X points - reduced to 21"
        	if var.ProbeNumY > 21
        		set var.ProbeNumY = 21
        		echo "Too many Y points - reduced to 21"
        	
        echo "Probing " ^ var.ProbeNumX ^ " points in X direction & " ^ var.ProbeNumY ^ " points in Y direction"
        
        ;check state of heaters
        var bedState = heat.heaters[0].state
        var bedActiveTemp = heat.heaters[0].active
        var bedStandbyTemp = heat.heaters[0].standby
        var nozzleState = heat.heaters[1].state
        M140 P0 S-276 ; turn off bed heater
        M568 P0 A0 ; turn off nozzle heater
        
        ; do probing
        set var.ProbeCenterX = (global.maxProbeX - ((global.maxProbeX - global.minProbeX)/2)) ; calculate centre point of probe area
        set var.ProbeCenterY = (global.maxProbeY - ((global.maxProbeY - global.minProbeY)/2)) ; calculate centre point of probe area
        echo "Setting Z datum point at X" ^ var.ProbeCenterX ^ " Y" ^ var.ProbeCenterY
        ; set Z = 0 to centre of probe area
        G1 X{var.ProbeCenterX- sensors.probes[0].offsets[0]} Y{var.ProbeCenterY- sensors.probes[0].offsets[1]} Z{sensors.probes[0].diveHeight+2} F3600
        G30
        echo "Mesh probing"
        M557 X{var.m557MinX,var.m557MaxX} Y{var.m557MinY,var.m557MaxY} P{var.ProbeNumX,var.ProbeNumY}
        if result != 0
        	abort "ERROR: could not create mesh" 
        else
        	G29 S0
        	if result != 0
        		abort "ERROR: Mesh probing failed"
        	else
        		echo "Mesh probing successful.   Loading mesh.."
        
        ; set Z = 0 to centre of probe area
        echo "Reset Z datum in mesh centre"
        G1 X{var.ProbeCenterX - sensors.probes[0].offsets[0]} Y{var.ProbeCenterY - sensors.probes[0].offsets[1]} Z{sensors.probes[0].diveHeight+2} F3600
        G30
        
        ; turn the heaters back on if needed
        if var.bedState != "off"
        	M140 S{var.bedActiveTemp} R{var.bedStandbyTemp}
        	if var.bedState="active"
        		M144 P0 S1 ; put bed on active temp
        	else
        		M144 P0 S0 ; put bed on standby temp
        if var.nozzleState	!= "off"
        	if var.nozzleState = "active"
        		M568 P0 A2 ; set nozzle to active
        	else
        		M568 P0 A1 ; set nozzle to standby
        
        1 Reply Last reply Reply Quote 1
        • dc42undefined
          dc42 administrators @RatRig0331
          last edited by dc42

          @ratrig0331 the minimum spacing between points allowed is 0.1mm in each of X and Y. "Spacing too small" means you have tried to specify a smaller spacing than that.

          Duet WiFi hardware designer and firmware engineer
          Please do not ask me for Duet support via PM or email, use the forum
          http://www.escher3d.com, https://miscsolutions.wordpress.com

          OwenDundefined 1 Reply Last reply Reply Quote 1
          • OwenDundefined
            OwenD @dc42
            last edited by

            @dc42 said in Only probe where the part will be printed:

            the minimum spacing between points allowed is 0.1mm in each of X and Y. "Spacing too small" means you have tried to specify a smaller spacing than that.

            In that case I'm at a bit of a loss how @RatRig0331 is getting that error using my code.
            It's early morning here (Australia) and I have to go to work, so I can't look at till I get home.
            @RatRig0331 Can you please un-comment all the lines in the mesh.g that show the calculations and post the output from the console.

            At the start I work out the maximum possible number of probes if a full bed was done using maxSpace.
            Later I use the object size to recalculate the number of probes also using maxSpacing.
            The lesser of these two numbers is used (or should be).

            There must be a fundamental flaw in my logic (at least with your bed size and probe configuration). 😕

            It also occurs to me that I haven't catered for deltas or printers where X0, Y0 is in the center of the bed.

            RatRig0331undefined 2 Replies Last reply Reply Quote 1
            • RatRig0331undefined
              RatRig0331 @OwenD
              last edited by

              @owend

              8/15/2022, 8:04:58 PM Error: M557: bad grid definition: Spacing too small
              8/15/2022, 8:04:26 PM Reset Z datum in mesh centre
              8/15/2022, 8:04:26 PM Mesh probing successful. Loading mesh..
              8/15/2022, 8:04:26 PM 36 points probed, min error -0.141, max error 0.093, mean -0.020, deviation 0.066
              Height map saved to file 0:/sys/heightmap.csv
              8/15/2022, 8:01:59 PM Mesh probing
              8/15/2022, 8:01:50 PM Setting Z datum point at X250.0000 Y250.0000
              8/15/2022, 8:01:50 PM Probing 6 points in X direction & 6 points in Y direction
              8/15/2022, 8:01:50 PM Probing grid - X183.907:316.093 Y188.907:311.093
              8/15/2022, 8:01:32 PM Leadscrew adjustments made: -0.014 0.008 0.009, points used 3, (mean, deviation) before (0.001, 0.010) after (-0.000, 0.000)
              8/15/2022, 8:01:12 PM Leadscrew adjustments made: 0.015 0.022 0.001, points used 3, (mean, deviation) before (0.014, 0.008) after (-0.000, 0.000)
              8/15/2022, 8:00:52 PM Leadscrew adjustments made: 0.102 0.033 -0.002, points used 3, (mean, deviation) before (0.046, 0.040) after (0.000, 0.000)
              8/15/2022, 8:00:32 PM Leadscrew adjustments made: 0.503 0.279 0.452, points used 3, (mean, deviation) before (0.404, 0.087) after (-0.000, 0.000)
              8/15/2022, 7:58:35 PM M32 "0:/gcodes/First_Layer_Test_0.2mm_PLA_10mhhhhhhhhhhhhhh.gcode"
              File 0:/gcodes/First_Layer_Test_0.2mm_PLA_10mhhhhhhhhhhhhhh.gcode selected for printing

              1 Reply Last reply Reply Quote 0
              • RatRig0331undefined
                RatRig0331 @OwenD
                last edited by

                @owend

                8/15/2022, 8:17:42 PM Error: M557: bad grid definition: Spacing too small
                8/15/2022, 8:17:10 PM Reset Z datum in mesh centre
                8/15/2022, 8:17:10 PM Mesh probing successful. Loading mesh..
                8/15/2022, 8:17:10 PM 36 points probed, min error -0.105, max error 0.079, mean -0.005, deviation 0.044
                Height map saved to file 0:/sys/heightmap.csv
                8/15/2022, 8:14:43 PM Mesh probing
                8/15/2022, 8:14:34 PM Setting Z datum point at X250.0000 Y250.0000
                8/15/2022, 8:14:34 PM Probing 6 points in X direction & 6 points in Y direction
                8/15/2022, 8:14:34 PM Max Probes Y is 6
                8/15/2022, 8:14:34 PM Min Probes Y is 2
                8/15/2022, 8:14:34 PM Max Probes X is 6
                8/15/2022, 8:14:34 PM Min Probes X is 2
                8/15/2022, 8:14:34 PM Probing grid - X183.907:316.093 Y188.907:311.093
                8/15/2022, 8:14:34 PM Maximum allowed probe points is 8 using max space of 60
                8/15/2022, 8:14:16 PM Leadscrew adjustments made: 0.002 0.008 0.006, points used 3, (mean, deviation) before (0.005, 0.002) after (0.000, 0.000)
                8/15/2022, 8:13:56 PM Leadscrew adjustments made: 0.016 0.016 0.011, points used 3, (mean, deviation) before (0.015, 0.002) after (0.000, 0.000)
                8/15/2022, 8:13:36 PM Leadscrew adjustments made: 0.168 0.055 0.022, points used 3, (mean, deviation) before (0.084, 0.057) after (-0.000, 0.000)
                8/15/2022, 8:13:16 PM Leadscrew adjustments made: 0.413 0.322 0.388, points used 3, (mean, deviation) before (0.372, 0.035) after (0.000, 0.000)
                8/15/2022, 8:12:01 PM M32 "0:/gcodes/First_Layer_Test_0.2mm_PLA_10mhhhhhhhhhhhhhh.gcode"
                File 0:/gcodes/First_Layer_Test_0.2mm_PLA_10mhhhhhhhhhhhhhh.gcode selected for printing

                OwenDundefined 1 Reply Last reply Reply Quote 0
                • OwenDundefined
                  OwenD @RatRig0331
                  last edited by

                  @ratrig0331
                  The M557 that is causing the error seems to be well after all the stuff I did.
                  Check for an M557 somewhere else in your slicer start gcode

                  RatRig0331undefined 2 Replies Last reply Reply Quote 0
                  • RatRig0331undefined
                    RatRig0331 @OwenD
                    last edited by

                    @owend

                    your right sorry it was in my start code purge line for some reason thank you so much for your time and patients with me this is all still vary new to me

                    8/15/2022, 9:22:31 PM Reset Z datum in mesh centre
                    8/15/2022, 9:22:31 PM Mesh probing successful. Loading mesh..
                    8/15/2022, 9:22:31 PM 36 points probed, min error -0.174, max error 0.083, mean -0.012, deviation 0.067
                    Height map saved to file 0:/sys/heightmap.csv
                    8/15/2022, 9:20:04 PM Mesh probing
                    8/15/2022, 9:19:56 PM Setting Z datum point at X250.0000 Y250.0000
                    8/15/2022, 9:19:55 PM Probing 6 points in X direction & 6 points in Y direction
                    8/15/2022, 9:19:55 PM Max Probes Y is 6
                    8/15/2022, 9:19:55 PM Min Probes Y is 2
                    8/15/2022, 9:19:55 PM Max Probes X is 6
                    8/15/2022, 9:19:55 PM Min Probes X is 2
                    8/15/2022, 9:19:55 PM Probing grid - X183.907:316.093 Y188.907:311.093
                    8/15/2022, 9:19:55 PM Maximum allowed probe points is 8 using max space of 60
                    8/15/2022, 9:19:55 PM Leadscrew adjustments made: -0.003 0.011 0.016, points used 3, (mean, deviation) before (0.007, 0.007) after (-0.000, 0.000)
                    8/15/2022, 9:19:34 PM Leadscrew adjustments made: 0.006 -0.003 0.004, points used 3, (mean, deviation) before (0.002, 0.003) after (0.000, 0.000)
                    8/15/2022, 9:19:14 PM Leadscrew adjustments made: 0.046 0.021 0.031, points used 3, (mean, deviation) before (0.032, 0.009) after (-0.000, 0.000)
                    8/15/2022, 9:18:54 PM Leadscrew adjustments made: -0.011 0.368 0.277, points used 3, (mean, deviation) before (0.213, 0.149) after (-0.000, 0.000)

                    1 Reply Last reply Reply Quote 0
                    • RatRig0331undefined
                      RatRig0331 @OwenD
                      last edited by

                      @owend

                      sorry one more question so far every time the start code hits your lines the hotend and bed turn off during the mesh than back on after. i tryed moving some things around but it still turns off all heaters during the mesh. here is my full start code

                      BED_TEMP=[first_layer_bed_temperature]
                      G90 ; use absolute coordinates
                      M83 ; extruder relative mode
                      M140 S[first_layer_bed_temperature] ; set final bed temp
                      M104 S150 ; set temporary nozzle temp to prevent oozing during homing and auto bed leveling
                      G4 S10 ; allow partial nozzle warmup
                      G28 ; home all axis
                      G1 Z50 F240
                      G1 X50 Y50 F3000
                      M116 ; Wait for all temps to stabilise
                      G32; (TRIM BED)
                      G32; (TRIM BED)
                      G32; (TRIM BED)
                      G32; (TRIM BED)

                      ;;;;;;auto probe print area only;;;;;;

                      set global.minProbeX = {first_layer_print_min[0]}
                      set global.maxProbeX = {first_layer_print_max[0]}
                      set global.minProbeY = {first_layer_print_min[1]}
                      set global.maxProbeY = {first_layer_print_max[1]}
                      M561 ; clear any bed transform
                      M140 S[first_layer_bed_temperature] ; set final bed temp
                      M104 S150 ; set temporary nozzle temp to prevent oozing during homing and auto bed leveling
                      G4 S10 ; allow partial nozzle warmup
                      G29 ; do mesh for printed area
                      G29 S1 ; load small mesh
                      G01 X0 Y{"{move.axes[1].max}"} Z0.6 F1500 ; Move to back corner while heating
                      M568 P{current_extruder} R{"{heat.coldExtrudeTemperature+5}"} S{first_layer_temperature[current_extruder]} A2 ; (set standby and active temperatures for active tool. Standby is 5 degrees above cold extrude temp )
                      M116 ; Wait for all temps to stabilise

                      ;;;;final temp and purge line;;;;

                      M104 S{first_layer_temperature[initial_extruder]+extruder_temperature_offset[initial_extruder]} ; set final nozzle temp
                      M190 S[first_layer_bed_temperature] ; wait for bed temp to stabilize
                      M109 S{first_layer_temperature[initial_extruder]+extruder_temperature_offset[initial_extruder]} ; wait for nozzle temp to stabilize
                      G4 S10 ; allow partial nozzle warmup
                      G1 Z2.0 F3000; (MOVE Z AXIS UP LITTLE)
                      G1 X0.1 Y20 Z0.35 F5000.0; (MOVE TO PURDGE START)
                      G1 X0.1 Y200.0 Z0.35 F1500.0 E25; (DRAW FIRST LINE)
                      G1 X0.4 Y200.0 Z0.35 F5000.0; (MOVE TO THE SECOND LINE)
                      G1 X0.4 Y20.0 Z0.35 F1500.0 E30; (DRAW SECOND LINE)
                      G92 E0; (EXTRUDER RESET)

                      OwenDundefined 2 Replies Last reply Reply Quote 0
                      • OwenDundefined
                        OwenD @RatRig0331
                        last edited by

                        @ratrig0331
                        The turning off of the heaters is deliberate and is done in mesh.g
                        I find that the accuracy of my bltouch suffers if they are on when probing
                        I run a 240v bed.
                        I'll have a look later and add an option to not turn off heaters.

                        dc42undefined 1 Reply Last reply Reply Quote 0
                        • dc42undefined
                          dc42 administrators @OwenD
                          last edited by

                          @owend you can turn off heaters temporarily during probing by using the B1 parameter in your M558 command.

                          Duet WiFi hardware designer and firmware engineer
                          Please do not ask me for Duet support via PM or email, use the forum
                          http://www.escher3d.com, https://miscsolutions.wordpress.com

                          OwenDundefined 1 Reply Last reply Reply Quote 0
                          • OwenDundefined
                            OwenD @dc42
                            last edited by

                            @dc42
                            Roger that..
                            That makes that section of code superfluous.
                            Does it turn off the bed heater as well?

                            dc42undefined 1 Reply Last reply Reply Quote 0
                            • OwenDundefined
                              OwenD @RatRig0331
                              last edited by OwenD

                              @ratrig0331 said in Only probe where the part will be printed:

                              You can remove these lines in your slicer as you have set your temps elsewhere in your start code.

                              M568 P{current_extruder} R{"{heat.coldExtrudeTemperature+5}"} S{first_layer_temperature[current_extruder]} A2 ; (set standby and active temperatures for active tool.  Standby is 5 degrees above cold extrude temp )
                              M116 ; Wait for all temps to stabilise
                              

                              This version removes all the code related to heating from mesh.g

                              ;0:/sys/mesh.g
                              ; run when G29 with no paramters is called.
                              ; if this file not found G29 S0 will run
                              var SafeZone = 3 ; safety margin for probing near edge.
                              var MinSpace = 20 ; put default minimum spacing
                              var MaxSpace = 60 ; put default maximum spacing
                              
                              ; these values are place holders aand will be calculated later
                              var m557MinX = 40;  ; put your default here
                              var m557MaxX = 180;  ; put your default here
                              var m557MinY = 20;  ; put your default here
                              var m557MaxY = 180;  ; put your default here
                              var ProbeCenterX = 90 ; will be updated to probe centre of print
                              var ProbeCenterY = 90 ; will be updated to probe centre of print
                              var ProbeNumX = 8 ; put default number of probe points
                              var ProbeNumY = 8 ; put default number probe points.
                              
                              
                              var MaxProbePoints = max(floor(move.axes[0].max / var.MaxSpace),floor(move.axes[1].max / var.MaxSpace)) ; maximum points in either axis
                              
                              ;echo "Maximum allowed probe points is " ^ var.MaxProbePoints ^ " using max space of " ^ var.MaxSpace
                              
                              
                              if exists(global.minProbeX)
                              	if global.minProbeX < max(0,sensors.probes[0].offsets[0]) + var.SafeZone
                              		echo "minProbeX (" ^ global.minProbeX ^ ") unreachable - reset to " ^ (sensors.probes[0].offsets[0] + var.SafeZone)
                              		set global.minProbeX = max(0,sensors.probes[0].offsets[0]) + var.SafeZone
                              	set var.m557MinX = global.minProbeX
                              
                              if exists(global.maxProbeX)
                              	if global.maxProbeX < (global.minProbeX + (var.MinSpace*2))
                              		set global.maxProbeX = (global.minProbeX + (var.MinSpace*2))
                              	if global.maxProbeX > (move.axes[0].max - abs(sensors.probes[0].offsets[0]) - var.SafeZone)
                              		echo "maxProbeX (" ^ global.maxProbeX ^ ") unreachable - reset to " ^ (move.axes[0].max - sensors.probes[0].offsets[0] - var.SafeZone)
                              		set global.maxProbeX = move.axes[0].max - abs(sensors.probes[0].offsets[0]) - var.SafeZone
                              	set var.m557MaxX = global.maxProbeX
                              
                              if exists(global.minProbeY)
                              	if global.minProbeY < max(0,sensors.probes[0].offsets[1]) + var.SafeZone
                              		echo "minProbeY (" ^ global.minProbeY ^ ") unreachable - reset to " ^ (sensors.probes[0].offsets[1] + var.SafeZone)
                              		set global.minProbeY = max(0,sensors.probes[0].offsets[1]) + var.SafeZone
                              	set var.m557MinY = global.minProbeY
                              
                              
                              if exists(global.maxProbeY)
                              	if global.maxProbeY < (global.minProbeY + (var.MinSpace*2))
                              		set global.maxProbeY = (global.minProbeY + (var.MinSpace*2))
                              	if global.maxProbeY > (move.axes[1].max - abs(sensors.probes[0].offsets[1]) - var.SafeZone)
                              		echo "maxProbeY (" ^ global.maxProbeY ^ ") unreachable - reset to " ^ (move.axes[1].max - sensors.probes[0].offsets[1] - var.SafeZone)
                              		set global.maxProbeY = (move.axes[1].max - abs(sensors.probes[0].offsets[1]) - var.SafeZone)
                              	set var.m557MaxY = global.maxProbeY
                              
                              echo "Probing grid - X" ^ var.m557MinX ^ ":" ^ var.m557MaxX ^ " Y" ^ var.m557MinY ^ ":" ^ var.m557MaxY
                              
                              var MinProbesX = floor((var.m557MaxX - var.m557MinX) / var.MaxSpace)
                              ;echo "Min Probes X is " ^ var.MinProbesX
                              
                              var MaxProbesX = floor((var.m557MaxX - var.m557MinX) / var.MinSpace)
                              ;echo "Max Probes X is " ^ var.MaxProbesX
                              
                              set var.ProbeNumX = min(var.MaxProbePoints,var.MaxProbesX)
                              
                              var MinProbesY = floor((var.m557MaxY - var.m557MinY) / var.MaxSpace)
                              ;echo "Min Probes Y is " ^ var.MinProbesY
                              
                              var MaxProbesY = floor((var.m557MaxY - var.m557MinY) / var.MinSpace)
                              ;echo "Max Probes Y is " ^ var.MaxProbesY
                              
                              set var.ProbeNumY = min(var.MaxProbePoints,var.MaxProbesY)
                              
                              ; sanity check probe points
                              if var.ProbeNumX<2
                              	set var.ProbeNumX=2
                              if var.ProbeNumY<2
                              	set var.ProbeNumY=2
                              
                              if var.ProbeNumX > var.MaxProbePoints
                              	set var.ProbeNumX = var.MaxProbePoints
                              
                              if var.ProbeNumY > var.MaxProbePoints
                              	set var.ProbeNumY = var.MaxProbePoints
                              
                              if (var.ProbeNumX * var.ProbeNumY) > 441
                              	if var.ProbeNumX > 21
                              		set var.ProbeNumX = 21
                              		echo "Too many X points - reduced to 21"
                              	if var.ProbeNumY > 21
                              		set var.ProbeNumY = 21
                              		echo "Too many Y points - reduced to 21"
                              	
                              echo "Probing " ^ var.ProbeNumX ^ " points in X direction & " ^ var.ProbeNumY ^ " points in Y direction"
                              
                              
                              ; do probing
                              set var.ProbeCenterX = (global.maxProbeX - ((global.maxProbeX - global.minProbeX)/2)) ; calculate centre point of probe area
                              set var.ProbeCenterY = (global.maxProbeY - ((global.maxProbeY - global.minProbeY)/2)) ; calculate centre point of probe area
                              echo "Setting Z datum point at X" ^ var.ProbeCenterX ^ " Y" ^ var.ProbeCenterY
                              ; set Z = 0 to centre of probe area
                              G1 X{var.ProbeCenterX- sensors.probes[0].offsets[0]} Y{var.ProbeCenterY- sensors.probes[0].offsets[1]} Z{sensors.probes[0].diveHeight+2} F3600
                              G30
                              echo "Mesh probing"
                              M557 X{var.m557MinX,var.m557MaxX} Y{var.m557MinY,var.m557MaxY} P{var.ProbeNumX,var.ProbeNumY}
                              if result != 0
                              	abort "ERROR: could not create mesh" 
                              else
                              	G29 S0
                              	if result != 0
                              		abort "ERROR: Mesh probing failed"
                              	else
                              		echo "Mesh probing successful.   Loading mesh.."
                              
                              ; set Z = 0 to centre of probe area
                              echo "Reset Z datum in mesh centre"
                              G1 X{var.ProbeCenterX - sensors.probes[0].offsets[0]} Y{var.ProbeCenterY - sensors.probes[0].offsets[1]} Z{sensors.probes[0].diveHeight+2} F3600
                              G30
                              
                              
                              1 Reply Last reply Reply Quote 0
                              • OwenDundefined
                                OwenD
                                last edited by OwenD

                                @RatRig0331

                                While I was thinking about how to make these macros "universal" to suit all sorts of configurations, it occurred to me that they had, over time, grown ever more complicated with little benefit.
                                Bed sizes and the probe positions don't tend to change after all.

                                I have therefore decided to simplify things.

                                I still call "setDefaultProbePoints.g" from config.g and anywhere else I might want to set the mesh for the entire bed.
                                Rather than me trying to calculate the area that can be probed, you just enter your M557 just as you would normally do in config.g

                                ;setDefaultProbePoints.g
                                M557 X10:470 Y10:470 P6 ; set values as you would normally do in config.g
                                

                                In superslicer, rather than call G29, I call mesh.g using M98, but pass the parameters for the min/max print values and the distance between probe points
                                A=xMin of print area
                                B=xMax of print area
                                C=yMin of print area
                                D=yMax of print area
                                N=distance between probe points (equivalent to S parameter in M557)

                                M98 P"0:/sys/mesh.g" A{first_layer_print_min[0]} B{first_layer_print_max[0]} C{first_layer_print_min[1]} D{first_layer_print_max[1]} N30 ; set N to your desired distance between points
                                G29 S1 ; load small mesh
                                

                                In mesh.g I check if all those parameters have been passed.
                                If they have, I do the small mesh.
                                If they haven't I reload the defaults and probe the full bed.
                                Therefore if you send G29 or select mesh probing in DWC it will do the entire bed even if you forget to reset the defaults.

                                ;mesh.g
                                M98 P"setDefaultProbePoints.g"
                                if (exists(param.A) && exists(param.B) && exists(param.C) && exists(param.D) && exists(param.N))
                                	M557 X{max(move.compensation.probeGrid.mins[0],param.A),min(move.compensation.probeGrid.maxs[0],param.B)} Y{max(move.compensation.probeGrid.mins[1],param.C),min(move.compensation.probeGrid.maxs[1] ,param.D)} S{param.N}
                                	if result != 0
                                		abort "Invalid M557 parameters"
                                
                                G29 S0
                                

                                If you wanted to set the number of probe points rather than the distance between them just change S{param.N} to P{param.N} in the M557 line in mesh.g

                                1 Reply Last reply Reply Quote 2
                                • oozeBotundefined
                                  oozeBot
                                  last edited by

                                  This might be useful: https://forum.duet3d.com/topic/29647/you-down-with-opp-oozebot-post-processor

                                  1 Reply Last reply Reply Quote 0
                                  • dc42undefined
                                    dc42 administrators @OwenD
                                    last edited by

                                    @owend said in Only probe where the part will be printed:

                                    @dc42
                                    Roger that..
                                    That makes that section of code superfluous.
                                    Does it turn off the bed heater as well?

                                    Yes, it turns all heaters off. In the past it's been the bed heater that causes most of the problems for Z probes, however I suspect that with Revo and similar hot ends the hot end heater might affect Z probes too because of the higher magnetic field they are likely to produce.

                                    Duet WiFi hardware designer and firmware engineer
                                    Please do not ask me for Duet support via PM or email, use the forum
                                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                                    1 Reply Last reply Reply Quote 0
                                    • RatRig0331undefined
                                      RatRig0331 @OwenD
                                      last edited by

                                      @owend I’m getting some mix results with the bed mesh either works out great or works out horrible with driving my nozzle right into the bed I don’t know is doing a 3 point axis bed level is messing with the bed mesh or the last z offset probe touch

                                      OwenDundefined 1 Reply Last reply Reply Quote 0
                                      • OwenDundefined
                                        OwenD @RatRig0331
                                        last edited by

                                        @ratrig0331
                                        There's nothing in the code which can cause intermittent faults such as that you describe.
                                        The problem is either wiring related, electrical interference , or a faulty BlTouch.
                                        You can check if the BlTouch is in an error state or already deployed using the object model, but this only serves to allow you to cancel the process.
                                        You need to find the root cause.
                                        You need to provide details of what is happening exactly. What lights are on the BlTouch. What messages appear in DWC
                                        It's probably better to start a new thread.

                                        RatRig0331undefined 1 Reply Last reply Reply Quote 0
                                        • RatRig0331undefined
                                          RatRig0331 @OwenD
                                          last edited by

                                          @owend I have a Theory to why it’s crashing. My 3 point bed leveling before the new smaller mesh on my 500x500mm bed is just too much of a difference from the outter most points of the bed level to the new inner smaller point bed mesh. I manually moved the three probe points much closer the the center and the mesh looks quite a bit better as well as flatter with less extreams. My z changed quite a bit with this new bed level as well by almost .45mm.

                                          Is there a way to auto ajust the bed level points to be in the same area of the auto bed mesh?

                                          1 Reply Last reply Reply Quote 0
                                          • OwenDundefined
                                            OwenD
                                            last edited by

                                            @ratrig0331

                                            What you're describing doesn't sound right to me.
                                            I suggest you study this page
                                            https://docs.duet3d.com/User_manual/Connecting_hardware/Z_probe_auto_levelling
                                            To get your 3 point levelling right.
                                            The probe points must be near the lead screws.

                                            RatRig0331undefined 2 Replies Last reply Reply Quote 0
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