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

    Duet WIFI with Micron Cobra extruder temperature setting

    Scheduled Pinned Locked Moved
    General Discussion
    4
    31
    4.2k
    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.
    • Guyarosundefined
      Guyaros
      last edited by

      I'm glad I could help.
      You are welcome to ask further questions.

      1 Reply Last reply Reply Quote 1
      • Saltypetzundefined
        Saltypetz
        last edited by

        Next problem. The board can't handle the power the heaters needed so I have one more power supply. I using the tevo black widow mosfet and the other power supply and the wire gets reat hot to the heater. But when I hooked up the heat to the Duet WIFI the wires also got real hot. Could if be something in the config file.

        Here is the config info.

        ; Heaters
        M301 H0 S1.00 P24.54 I4.3 D34.97 T0.4 W180 B30 ; Use PID on bed heater (may require further tuning)

        M305 P0 T100000 B4036 C0 R4700 ; Set thermistor + ADC parameters for heater 0
        M143 H0 S80 ; Set temperature limit for heater 0 to 80C
        M305 P1 X150 T"K"; ; Set thermistor + ADC parameters for heater 1
        M143 H1 S300 ; Set temperature limit for heater 1 to 300C

        Thank you for the help.

        1 Reply Last reply Reply Quote 0
        • Saltypetzundefined
          Saltypetz
          last edited by

          Forgot to say this I can see the temperature going up for the WIFI page.

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

            Which heater wires are getting hot: the bed heater wires, or the extruder heater wires?

            What is the power rating of the heater concerned, and what thickness wires are you using?

            If you are using 24V power, are you sure that the heater is a 24V heater not a 12V heater?

            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
            • Saltypetzundefined
              Saltypetz
              last edited by

              The extruder wires are getting real hot but I turned it off. The extruder is on a 12V 25A power supply.

              1 Reply Last reply Reply Quote 0
              • Saltypetzundefined
                Saltypetz
                last edited by Saltypetz

                This is from the Micron support page.

                https://cdn.shopify.com/s/files/1/0388/6813/files/INSTALLATION_GUIDE_FOR_MICRON_3DP_EXTRUDERS-REV--4_c75de786-b674-4987-9203-ce1c53da23af.pdf?3870582523988255141

                Electrical:
                Step motor connections
                Connect the motor wires according to the attached motor spec.
                If you are working with 24V Power supply, reduce the driver (pololu or similar) to about 50% current. This
                can be done by: disconnect PS, rotate the current pot fully counterclockwise and then about 1/8 of a turn
                clockwise, connect the PS and check if the extruder stepper motor able to extrude the filament without
                losing steps (don't forget to turn on the heater).
                Another approach to reduce the current is in the firmware configuration, this can be done only if you have
                a controller and drivers that support this.
                NTC thermistor
                The thermistor type is: 100K ohm EPCOS B57560G104F NTC THERMISTOR
                Polarity for the NTC is not important. Connect it to the Temperature input on the
                Ramps/Sanguilolu/Smoothieboard/Etc.
                For Marlin firmware, the thermistor number is type 1.
                Heaters
                Micron 3DP extruder's heaters are rated for 12V and about 60W (120W for the dual extruder). Make sure
                your board fuse can handle that.
                It is possible to operate the heaters using 24V PS. In this case, reduce the power to 60 % by changing the
                heaters parameters in the firmware. In case of using Marlin firmware, you should look for #define
                PID_MAX 255 in configuration.h file and change it to #define PID_MAX 155
                Polarity for the heater is not important; just connect it to the heater exit

                Thank you for the help

                1 Reply Last reply Reply Quote 0
                • Guyarosundefined
                  Guyaros
                  last edited by Guyaros

                  Cobra extruder is available with 2 voltage configuration: 12[V] or 24[V].
                  the difference between the configurations is the Fan voltage rating and Heater resistance.
                  Also, there are several heaters options: 50[W] / 64[W] /100[W].
                  Duet extruder heaters can output 9[A], so for 12[V] the power output is 108[W], so no problem at all.
                  Please measure the resistance of the heater you have, using Digital Multi Meter, and report here.

                  I have never experienced a situation where the heaters wiring of the Cobra got hot. Please take a picture of your wiring. This is very odd.

                  1 Reply Last reply Reply Quote 0
                  • Guyarosundefined
                    Guyaros
                    last edited by

                    After you'll fix the "hot wires" problem you should run Heater Auto PID tuning
                    Please read here before tuning:
                    https://duet3d.dozuki.com/Wiki/Tuning_the_heater_temperature_control

                    To run PID tuning in your case, use this command:
                    M303 H1 P1.0 S230

                    After the PID tuning is completed, write the command
                    M307 H1
                    and write down or print screen the tuning results.

                    then, edit your config.g file, and add this line:
                    M307 H1 Annnn.n Cnnn.n Dnn.n S1.0;
                    Replace nnn.n with the results from the PID tuning.

                    1 Reply Last reply Reply Quote 0
                    • Saltypetzundefined
                      Saltypetz
                      last edited by Saltypetz

                      So you want me to unhook the heater and put the meter on the heater wires. Is that what you want me to do?
                      If that is what you are asking me to do it is 600 - 700 on 2000k on the meter.
                      Can these extruders run off the board or should I put them on a different power supply. I don't want to burn up the board. I had them hooked up to the board and the shut down from low power. Right now I have them on a different power source with the tevo black widow mosfet. But the wires get hot hooked to the board or the mosfet.

                      Thank you

                      1 Reply Last reply Reply Quote 0
                      • Guyarosundefined
                        Guyaros
                        last edited by Guyaros

                        @saltypetz said

                        So you want me to unhook the heater and put the meter on the heater wires. Is that what you want me to do?

                        Yes, I want you to measure the resistance of the heater.

                        Take a picture of your multimeter, with the measurement you did, so I can help you further.
                        A reading of 600-700 it's not what it suppose to read.
                        I don't think 2000k mode on your DMM (Digital Multi-Meter) is the correct mode.

                        I think there is a language barrier between us, so please upload a picture.

                        As I said, the extruder heater supposes to be connected directly to the Duet.
                        But first, we need to investigate whats wrong with your wiring, because wires getting hot is not normal, and maybe you have kind of a shortage which causes a high current draw, or that you used very thin wires that aren't sufficient to handle high loads.

                        1 Reply Last reply Reply Quote 0
                        • Saltypetzundefined
                          Saltypetz
                          last edited by Saltypetz

                          There is no language barrier I understand what you want but I only have a junky meter at home. I can go get my Klein from my warehouse. But this meter will only work on 2000k nothing else.
                          I put a URL from photobucket but nothing shows up.
                          http://i1024.photobucket.com/albums/y301/loosewire1234/20180422_110352_zpshbnvi6rf.jpg
                          I am still trying to up load the picture but it is a Greenlee DM-20.
                          If I need to I will go pick up the meter now. Klein

                          Thank you for your help

                          1 Reply Last reply Reply Quote 0
                          • Guyarosundefined
                            Guyaros
                            last edited by Guyaros

                            Set the DMM to 200[ohm] mode.
                            The resistance of heaters (in general) is in range of 1.5 to 6[ohm], so you will need to use the minimal range of your meter which is 200 in your case.
                            If it's a faulty meter, then throw it away and get a new one.

                            I'm trying to figure out what causing the wires to get hot.
                            so please upload pictures of your wiring and connections to the Duet, this may help.

                            1 Reply Last reply Reply Quote 0
                            • Saltypetzundefined
                              Saltypetz
                              last edited by Saltypetz

                              Here are the pictures and I think it what you are asking me to do. I'm not a great electronics guy but i will try my best.
                              http://i1024.photobucket.com/albums/y301/loosewire1234/20180423_144447_zpsj3ljlw1p.jpg
                              http://i1024.photobucket.com/albums/y301/loosewire1234/20180423_144440_zpski3b8rjj.jpg
                              In the wifi software when I try to turn on the heater where it says Sensors it drop down to 5 vovlt and the fan on the power supply shuts off. Do I need to go get a Atx power supply. If so what Atx sould I buy. With nothing on there It's only 18.9 volts. Could this be the whole problem.

                              1 Reply Last reply Reply Quote 0
                              • Saltypetzundefined
                                Saltypetz
                                last edited by

                                I just hooked up the atx power supply and the wires still get hot but now faster. The bed heats up no problem at all. Should I hook up the other hotend to see if it has the same problem. Let me know what you think.

                                Thank you. You have been very help full.

                                1 Reply Last reply Reply Quote 0
                                • Saltypetzundefined
                                  Saltypetz
                                  last edited by

                                  I can say for sure it not the Duet Wifi board I hooked it to a rambo and it has the same problem.

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

                                    @saltypetz, photbucket does not let other people see your photos unless you pay them. So please host your photos elsewhere.

                                    It sounds to me that you may have a shorted heater cartridge.

                                    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 1
                                    • Saltypetzundefined
                                      Saltypetz
                                      last edited by

                                      It you add this to google chrome it works no problem.

                                      https://chrome.google.com/webstore/detail/photobucket-hotlink-fix/kegnjbncdcliihbemealioapbifiaedg?hl=en

                                      1 Reply Last reply Reply Quote 0
                                      • Saltypetzundefined
                                        Saltypetz
                                        last edited by Saltypetz

                                        I hooked up the second heater it works no problem wires are not hot. Bad heater out of the box. the wires are not even warm.

                                        1 Reply Last reply Reply Quote 0
                                        • Saltypetzundefined
                                          Saltypetz
                                          last edited by Saltypetz

                                          It is all working now. Till the next problem. I still have to do the end stops and the motors. So I'm sure I will be back.

                                          Thank you for all the help

                                          1 Reply Last reply Reply Quote 0
                                          • Saltypetzundefined
                                            Saltypetz
                                            last edited by Saltypetz

                                            How do I make optical sensor work on the Tevo Black Widow. There is one link but not to much information.
                                            Guyaros and dc42 you have been great help for a beginner.

                                            Thank you

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