Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login

    termistors

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
    6
    16
    414
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • minimaxerundefined
      minimaxer
      last edited by

      Hello I have the Duetwifi built into the UM2. Only the termistors are plugged into the borad - now both indicate wrong temperatures.

      what could that be?Bildschirmfoto 2019-12-28 um 14.57.28.png

      1 Reply Last reply Reply Quote 0
      • Dougal1957undefined
        Dougal1957
        last edited by

        post your config.g!

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

          what thermistors does the um2 have?

          Dougal1957undefined minimaxerundefined 2 Replies Last reply Reply Quote 0
          • Dougal1957undefined
            Dougal1957 @Veti
            last edited by

            @Veti said in termistors:

            what thermistors does the um2 have?

            don't UM2's use Thermocouples or have I remembered incorrectly (Highly possible)

            1 Reply Last reply Reply Quote 0
            • minimaxerundefined
              minimaxer @Dougal1957
              last edited by

              @Dougal1957

              the config.g

              ; Configuration file for Duet WiFi (firmware version 2.03)
              ; executed by the firmware on start-up
              ;
              ; generated by RepRapFirmware Configuration Tool v2.1.4 on Sat Dec 28 2019 00:04:16 GMT+0100 (CET)

              ; General preferences
              G90 ; send absolute coordinates...
              M83 ; ...but relative extruder moves
              M550 P"My Printer" ; set printer name

              ; Network
              M552 S1 ; enable network
              M586 P0 S1 ; enable HTTP
              M586 P1 S0 ; disable FTP
              M586 P2 S0 ; disable Telnet

              ; Drives
              M569 P0 S1 ; physical drive 0 goes forwards
              M569 P1 S1 ; physical drive 1 goes forwards
              M569 P2 S0 ; physical drive 2 goes backwards
              M569 P3 S1 ; physical drive 3 goes forwards
              M584 X0 Y1 Z2 E3 ; set drive mapping
              M350 X256 Y256 Z256 E256 I0 ; configure microstepping without interpolation
              M92 X80.00 Y80.00 Z4000.00 E420.00 ; set steps per mm
              M566 X900.00 Y900.00 Z12.00 E120.00 ; set maximum instantaneous speed changes (mm/min)
              M203 X6000.00 Y6000.00 Z180.00 E1200.00 ; set maximum speeds (mm/min)
              M201 X500.00 Y500.00 Z20.00 E250.00 ; set accelerations (mm/s^2)
              M906 X800 Y800 Z800 E800 I30 ; set motor currents (mA) and motor idle factor in per cent
              M84 S30 ; Set idle timeout

              ; Axis Limits
              M208 X0 Y0 Z0 S1 ; set axis minima
              M208 X220 Y220 Z200 S0 ; set axis maxima

              ; Endstops
              M574 X1 Y1 Z1 S1 ; set active high endstops

              ; Z-Probe
              M558 P0 H5 F120 T6000 ; disable Z probe but set dive height, probe speed and travel speed
              M557 X15:215 Y15:195 S20 ; define mesh grid

              ; Heaters
              M305 P0 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 0
              M143 H0 S120 ; set temperature limit for heater 0 to 120C
              M305 P1 T100000 B4138 R4700 ; set thermistor + ADC parameters for heater 1
              M143 H1 S280 ; set temperature limit for heater 1 to 280C

              ; Fans
              M106 P0 S0 I0 F500 H-1 ; set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
              M106 P1 S1 I0 F500 H1 T45 ; set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on

              ; Tools
              M563 P0 D0 H1 F0 ; define tool 0
              G10 P0 X0 Y0 Z0 ; set tool 0 axis offsets
              G10 P0 R0 S0 ; set initial tool 0 active and standby temperatures to 0C

              ; Custom settings are not defined

              1 Reply Last reply Reply Quote 0
              • minimaxerundefined
                minimaxer @Veti
                last edited by

                @Veti what thermistors does the um2 have?

                Is a UM2 +, the termistors have previously worked properly.

                1 Reply Last reply Reply Quote 0
                • minimaxerundefined
                  minimaxer
                  last edited by

                  I have to make every connector for the Duet, but before the termistors do not work - it has no purpose.

                  1 Reply Last reply Reply Quote 0
                  • minimaxerundefined
                    minimaxer
                    last edited by

                    IMG_1401.JPG IMG_1400.JPG

                    Termistor for hotend and heating bed

                    1 Reply Last reply Reply Quote 0
                    • DocTruckerundefined
                      DocTrucker
                      last edited by

                      What is the resistance of the sensor when disconnected from the board?

                      What values have you found for the sensors?

                      Running 3 P3Steel with Duet 2. Duet 3 on the shelf looking for a suitable machine. One first generation Duet in a Logo/Turtle style robot!

                      minimaxerundefined 1 Reply Last reply Reply Quote 0
                      • aidarundefined
                        aidar
                        last edited by

                        From UM2 firmware, it seems they use PT100 instead of regular thermistors, both hotend and bed.

                        1 Reply Last reply Reply Quote 0
                        • minimaxerundefined
                          minimaxer @DocTrucker
                          last edited by

                          @DocTrucker

                          112k

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

                            @minimaxer said in termistors:

                            @DocTrucker

                            112k

                            Are you sure you mean 112K, not 112 ohms?

                            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
                            • minimaxerundefined
                              minimaxer
                              last edited by

                              oh sorry - 112 ohm

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

                                @minimaxer said in termistors:

                                oh sorry - 112 ohm

                                In that case, @aidar is right, they are PT100 sensors, not thermistors. To use them with Duet you need the PT100 daughter board. One board handles two PT100 sensors.

                                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
                                • minimaxerundefined
                                  minimaxer
                                  last edited by

                                  Ok, I read it, the UM2 + has PT100 sensors and I need an extra board -: ((

                                  DocTruckerundefined 1 Reply Last reply Reply Quote 0
                                  • DocTruckerundefined
                                    DocTrucker @minimaxer
                                    last edited by

                                    @minimaxer wasn't able to get back online last night but suspected PT100 as I had the same issue when converting an Up Plus 2 for someone an age ago.

                                    Ok extra cost but the boards mount on Duets (post 0.6 or 0.8.5) with no extra hardware. PT100 are better sensors on many measures, but rely on a well shielded system. That said, if you are converting a machine like the ultimaker then shielding issues are likely already sorted, unless it is broken accidentally in the conversion.

                                    Just keep an eye out for impossible heat changes on the temp plot. In other words if there are sudden changes of 5-10C or more in reported temp in an instant then you have wiring or noise issues.

                                    Running 3 P3Steel with Duet 2. Duet 3 on the shelf looking for a suitable machine. One first generation Duet in a Logo/Turtle style robot!

                                    1 Reply Last reply Reply Quote 0
                                    • First post
                                      Last post
                                    Unless otherwise noted, all forum content is licensed under CC-BY-SA