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    Having problems with Anycubic Kossel Linear Plus calibration

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    • SnakeSPundefined
      SnakeSP
      last edited by SnakeSP

      I'm new to the Duet, love this board already - fast and it is possible to make configurations on the fly.
      Yet i have problems with calibrating my delta printer. It was initially on Marlin 1.1.9 and i even managed to get acceptable prints on it before.
      Now i have installed Duet board and moved to 24 V power supply. No changes to heat bed (except for wiring of course), MK3+Ultrabase. No changes to rods and carriages. Changed the heating cube and nozzle.
      Now i'm trying to calibrate using the original Anycubic Z probe (switch). Mesured it's trigger height: G31 P500 X0 Y0 Z15.893
      Trying to calibrate using 6-factor calibration. The results are not good: when i try to print, the printing goes too high from bed and plastic (PETG, 230 on hotend, 70 on bed) does not stick to bed at all. I try baby stepping going down to -0,13 - still not sticking. With babystepping -0.14 the plastick is smiply smashed into bed, it sticks, but won't go from bed after cooling and removing the print.
      Can you, please, help me out and point what i'm missing?

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      • Vetiundefined
        Veti
        last edited by

        post your config. you might have not configured the thermistor correctly and therefore printing at the wrong temperature.

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        • SnakeSPundefined
          SnakeSP
          last edited by SnakeSP

          Here are config.g, config-override.g and bed.g.
          I tried to change bed temperature to 80 С with no success.
          Thermistor used on hotend is this one: HT-NTC100K
          2_1567334916468_config-override.g 1_1567334916468_config.g 0_1567334916467_bed.g

          BTW i'm on Firmware Version: 2.0(RTOS) (2018-06-05b3)
          WiFi Server Version: 1.21
          Web Interface Version: 1.22.6
          Do you think updating to 2.04 RC1 will do anything better?

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          • Vetiundefined
            Veti
            last edited by

            does this happen for pla as well?

            SnakeSPundefined 1 Reply Last reply Reply Quote 0
            • SnakeSPundefined
              SnakeSP @Veti
              last edited by

              @veti yes, just the same with PLA

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              • Vetiundefined
                Veti
                last edited by

                ; Axis Limits
                M208 Z0 S1 ; Set minimum Z

                this will disallow babystepping below 0 i believe

                SnakeSPundefined 1 Reply Last reply Reply Quote 0
                • Vetiundefined
                  Veti
                  last edited by

                  also you have 271.5 as the rod length. marlin has 267 for it.

                  SnakeSPundefined 1 Reply Last reply Reply Quote 0
                  • jay_s_ukundefined
                    jay_s_uk
                    last edited by

                    Your steps per mm are wrong. These should be 80 and not 100.
                    Are you using mesh compensation as well in case your bed is slightly tilted?

                    Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

                    SnakeSPundefined 1 Reply Last reply Reply Quote 0
                    • SnakeSPundefined
                      SnakeSP @Veti
                      last edited by

                      @veti Good point, will double check.

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                      • SnakeSPundefined
                        SnakeSP @Veti
                        last edited by SnakeSP

                        @veti Yes, Marlin has 267, i took 271.5 after one of the calibration attempts. Will change to 267 and try again (actial measurements show 266.5, but not sure that those are really accurate as i was using just a metal ruler).

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                        • SnakeSPundefined
                          SnakeSP @jay_s_uk
                          last edited by

                          @jay_s_uk No, steps are correct, i'm using 16 teeth pulleys now, not 20 teeth as in the original build.
                          Tried bed compensation - did not help.

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                          • SnakeSPundefined
                            SnakeSP
                            last edited by SnakeSP

                            Set L=267, recalibrated with S6:

                            6:22:32 PMM666
                            Endstop adjustments X-0.86 Y0.95 Z-0.09, tilt X0.00% Y0.00%
                            6:22:27 PMM665
                            Diagonal 267.000, delta radius 133.934, homed height 287.589, bed radius 115.0, X 0.517°, Y -0.986°, Z 0.000°
                            6:22:11 PMG32
                            Calibrated 6 factors using 16 points, deviation before 0.041 after 0.041

                            Checked with S-1:
                            6:28:52 PMG32
                            G32 bed probe heights: 0.061 0.048 -0.070 -0.012 0.047 0.035 -0.052 -0.038 0.061 0.031 -0.060 -0.030 0.000 0.011 0.019 -0.029, mean 0.001, deviation from mean 0.043

                            Checked that the nozzle goes to correct position: lowered nozzele to Z=0 and was hardly able to put paper between nozzle and bed (just as back then when i was on Marlin), so Z=0 is about 0.08 mm above the bed at center. Tried moving nozzle at Z=0 - height is about the same.

                            Commented M208 Z0 S1 in the config.goes

                            Tried printing PLA at bed 50C and hotend at 190C. Layer = 0.2, no offsets applied. Printing goes mid air.
                            Tried using baby stepping. No changes till -0.2. With baby stepping = -0.2 plastic hardly sticks to bed but is moved away by the nozzle when it goes to the next line.
                            Baby stepping = -0.22 made plastc smash into the bed.

                            I really do not understand what's wrong...

                            Vetiundefined 1 Reply Last reply Reply Quote 0
                            • Vetiundefined
                              Veti
                              last edited by

                              @snakesp said in Having problems with Anycubic Kossel Linear Plus calibration:

                              really do not understand what's wrong...

                              while printing do a M122 and show us the output. just to make sure that no mesh bed leveling is active.

                              SnakeSPundefined 1 Reply Last reply Reply Quote 0
                              • SnakeSPundefined
                                SnakeSP @Veti
                                last edited by

                                @veti said in Having problems with Anycubic Kossel Linear Plus calibration:
                                7:03:57 PMM122
                                === Diagnostics ===
                                RepRapFirmware for Duet 2 WiFi/Ethernet version 2.0(RTOS) running on Duet WiFi 1.02 or later
                                Board ID: 08DGM-9T6BU-FG3SW-6J1FG-3SS6L-KBTHH
                                Used output buffers: 3 of 20 (15 max)
                                === RTOS ===
                                Static ram: 28380
                                Dynamic ram: 95920 of which 16 recycled
                                Exception stack ram used: 372
                                Never used ram: 6384
                                Task NETWORK ready, free stack 396
                                Task HEAT blocked, free stack 1256
                                Task MAIN running, free stack 3624
                                === Platform ===
                                Last reset 00:18:40 ago, cause: software
                                Last software reset at 2019-09-01 18:45, reason: User, spinning module GCodes, available RAM 6384 bytes (slot 1)
                                Software reset code 0x0003 HFSR 0x00000000, CFSR 0x00000000, ICSR 0x0041f000, BFAR 0xe000ed38, SP 0xffffffff
                                Error status: 0
                                Free file entries: 9
                                SD card 0 detected, interface speed: 20.0MBytes/sec
                                SD card longest block write time: 0.0ms
                                MCU temperature: min 56.2, current 56.4, max 56.6
                                Supply voltage: min 23.2, current 23.9, max 24.3, under voltage events: 0, over voltage events: 0
                                Driver 0: ok, SG min/max not available
                                Driver 1: ok, SG min/max not available
                                Driver 2: ok, SG min/max 75/194
                                Driver 3: ok, SG min/max not available
                                Driver 4: standstill, SG min/max not available
                                Date/time: 2019-09-01 19:03:55
                                Slowest loop: 174.92ms; fastest: 0.08ms
                                === Move ===
                                Hiccups: 0, StepErrors: 0, LaErrors: 0, FreeDm: 228, MinFreeDm 213, MaxWait: 0ms, Underruns: 0, 0
                                Scheduled moves: 56, completed moves: 53
                                Bed compensation in use: none
                                Bed probe heights: 0.000 0.000 0.000 0.000 0.000
                                === Heat ===
                                Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
                                Heater 0 is on, I-accum = 0.1
                                Heater 1 is on, I-accum = 0.2
                                === GCodes ===
                                Segments left: 1
                                Stack records: 2 allocated, 0 in use
                                Movement lock held by null
                                http is idle in state(s) 0
                                telnet is idle in state(s) 0
                                file is doing "G1 X9.475 Y-40.525 F900" in state(s) 0
                                serial is idle in state(s) 0
                                aux is idle in state(s) 0
                                daemon is idle in state(s) 0
                                queue is idle in state(s) 0
                                autopause is idle in state(s) 0
                                Code queue is empty.
                                === Network ===
                                Slowest loop: 3.74ms; fastest: 0.01ms
                                Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
                                HTTP sessions: 1 of 8

                                • WiFi -
                                  Network state is running
                                  WiFi module is connected to access point
                                  Failed messages: pending 338, notready 0, noresp 0
                                  WiFi firmware version 1.21
                                  WiFi MAC address 4c:11:ae:02:e3:cf
                                  WiFi Vcc 3.33, reset reason Turned on by main processor
                                  WiFi flash size 4194304, free heap 16200
                                  WiFi IP address 192.168.1.37
                                  WiFi signal strength -70dBm, reconnections 0, sleep mode modem
                                  Socket states: 0 0 0 0 0 0 0 0
                                  === Expansion ===

                                M122

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                                • Vetiundefined
                                  Veti
                                  last edited by

                                  @snakesp said in Having problems with Anycubic Kossel Linear Plus calibration:

                                  RepRapFirmware for Duet 2 WiFi/Ethernet version 2.0(RTOS) running on Duet WiFi 1.02 or later

                                  you are using a very old version of the firmware. just to rule out any problems there update to 2.04RC1

                                  but the problems comes down to this? with marlin pla sticks on the ultrabase. with duet it does not?

                                  SnakeSPundefined 1 Reply Last reply Reply Quote 0
                                  • SnakeSPundefined
                                    SnakeSP @Veti
                                    last edited by SnakeSP

                                    @veti Simply put, yes, with Marlin prints were ok, with Duet plastic does not stick (not only PLA, PETG also).
                                    But i'm almost sure this is due to i'm doing something wrong.
                                    Will try updating to 2.04 RC1 today and recalibrate.
                                    Also it may occur that thermistors are configured incorrectly (hotend thermistor is changed from original one, but the bed is the same except changing it to 24V).
                                    Possibly bed or hotend or both produce lower temperature than expected, but not sure how test this. But on the other hand PLA should stick even to cold bed.

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                                    • Vetiundefined
                                      Veti @SnakeSP
                                      last edited by

                                      @snakesp said in Having problems with Anycubic Kossel Linear Plus calibration:

                                      lowered nozzele to Z=0 and was hardly able to put paper between nozzle and bed

                                      this means that your offset is wrong btw. if there is space between the nozzle and bed for paper, then z=0 is not z=0 rather something like z=0.1+movement space.

                                      SnakeSPundefined 1 Reply Last reply Reply Quote 0
                                      • Vetiundefined
                                        Veti
                                        last edited by

                                        what thermistors have you configured in marlin?

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                                        • SnakeSPundefined
                                          SnakeSP @Veti
                                          last edited by SnakeSP

                                          @veti
                                          Current Z probe offset is Z15.791, do you mean i should change it to 15.891 ?
                                          It was
                                          5 : 100K thermistor - ATC Semitec 104GT-2/104NT-4-R025H42G (Used in ParCan & J-Head) (4.7k pullup)
                                          in Marlin, but that was original Anycubic thermistor. Same one for the bed.

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                                          • Vetiundefined
                                            Veti
                                            last edited by

                                            that is significantly different.

                                            semitec is B4725 C7.060000e-8

                                            SnakeSPundefined 1 Reply Last reply Reply Quote 0
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