No hotend reaction
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Hi,
I´m a beginner with 3D Printers. And now I have a serious problem with my Duet 0.8.5. When I want to switch on the hotend with pronterface, nothing is gonna happen. The LED which should light up also doesn´t show any reaction. The heat element (incl. wires) and the thermistor is working fine. I checked both of the hot end plugs and none of them is showing a voltage output.
Cheers
Nico
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Hi Nico,
It sounds like a configuration issue so post your config.g so that we know where to start looking. Also, it would help if you can tell us a bit about your printer, like is it a Cartesian or delta, how many extruders does it have, what voltage your power supply and heater are etc.. Just basic stuff to help us understand your problem.
Ian
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Hi Ian,
I have a Kossel XL with only one extruder. I am using the dc42Kossel config:
[; Configuration file for dc42 Kossel ; Communication and general M111 S0 ; Debug off M550 PKossel ; Machine name (can be anything you like) M551 Preprap ; Machine password (used for FTP) M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0x42 ; MAC Address ;*** Adjust the IP address and gateway in the following 2 lines to suit your network M552 P192.168.0.14 ; IP address (0 = use DHCP) M554 P192.168.1.10 ; Gateway M553 P255.255.255.0 ; Netmask M555 P2 ; Set output to look like Marlin M575 P1 B57600 S1 ; Set auxiliary serial port baud rate and require checksum (for PanelDue) ; Axis and motor configuration M569 P0 S1 ; Drive 0 goes forwards M569 P1 S1 ; Drive 1 goes forwards M569 P2 S1 ; Drive 2 goes forwards M569 P3 S0 ; Drive 3 goes backwards M569 P4 S0 ; Drive 4 goes backwards M574 X2 Y2 Z2 P1 S1 ; set endstop configuration (all endstops at high end, active high) M665 L333 R213.5 H288 B150 X0 Y0 ; set delta radius, diagonal rod length, printable radius, homed height and XY tower corrections M666 X0 Y0 Z0 ; put your endstop adjustments here, or use auto calibration to find them M92 X160 Y160 Z160 ; Set axis steps/mm (20 tooth pulleys, 0.9deg/step motors) M906 X1000 Y1000 Z1000 E800 ; Set motor currents (mA) M201 X3000 Y3000 Z3000 E1000 ; Accelerations (mm/s^2) M203 X18000 Y18000 Z18000 E3600 ; Maximum speeds (mm/min) M566 X600 Y600 Z600 E600 ; Maximum instant speed changes G21 ; Work in millimetres G90 ; Send absolute coordinates... M83 ; ...but relative extruder moves ; Thermistors and heaters M305 P0 T100000 B3950 R4700 H0 L0 ; Typical Chinese bed thermistor. Put your own H and/or L values here to set the bed thermistor ADC correction. M305 P1 T100000 B4388 R4700 H0 L0 ; E3Dv6 hot end. Put your own H and/or L values here if necessary to set the first nozzle thermistor ADC correction. M301 H0 P20 I0.5 D1000 T0.85 W150 B5 ; PID settings for the bed M301 H1 P10 I0.10 D100 T0.50 ; PID settings for extruder 0 M570 S200 ; Allow extra heating time M106 P1 T45 H1 ; Hot-End Lüfter beginnt erst bei 45°C ; Tool definitions M563 P0 D0 H1 ; Define tool 0 G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures M92 E420 ; Set extruder steps per mm for first and second extruders ; Z probe and compensation definition M558 P1 X0 Y0 Z0 H3 F300 T12000 ; Z probe is IR and is not used for homing any axes, Z probe dive height 3mm, probing speed 300mm/min, travel speed 12000mm/min G31 X0 Y0 Z1.66 P500 ; Set the zprobe offset and threshold (put your own values here). For a delta, use zero X and Y offset. ;*** If you are using axis compensation, put the figures in the following command M556 S78 X0 Y0 Z0 ; Axis compensation here M207 S7.0 F3600 Z0.1 ; Set firmware retraction details M572 D0 S0.1 ; set pressure advance T0 ; select first print head ]
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Ok, I found the bug. I don´t know why that is so, but never mind. I changed the wire orientation of the thermistor and that was it. Is there any diode in the thermistor or why the orientation matters? I thought that a thermistor is a restistor with a almost linear restistance dependency to the temperature.
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Ok, I found the bug. I don´t know why that is so, but never mind. I changed the wire orientation of the thermistor and that was it. Is there any diode in the thermistor or why the orientation matters? I thought that a thermistor is a restistor with a almost linear restistance dependency to the temperature.
I thought so too - it shouldn't matter which wire goes to which side of the thermistor. Maybe you have a bad connection somewhere which coincidentally got disturbed when you were swapping wires? I can't see anything obviously wrong with your configuration.
