HUGE FAIL - had to disconnect nozzle

[TFMike]

Is the output on the RAMBO actually supplying the heater with power? What are your heating settings (PID Max, P, I, D, Max PWM power, etc)?

max temp was changed from 247 to 290, min defect was -10, max defect was 300
pwm was 255

any other numbers you want me to screen shot in matter control?

[Nylocke]

All the other heating variables, the max temps don't matter. Drive Max, PID Max, etc

[TFMike]

All the other heating variables, the max temps don't matter. Drive Max, PID Max, etc

Too lazy to mess with screenshots in mattercontrol so here is the whole shebang in a .txt file



EDIT: On a side note, way back in 2013 when I got this I knew soemthing like this would happen, I just knew it. I was scared of ever having to mess with firmware/eeprom/gcode and all of that but now that I have had to tear down the nozzle and mess with the firmware I have found it isn't as bad as I had originally though, just wish it worked now :/

[Nylocke]

The configuration file is irrelevant when talking about these values. They are overridden by EEPROM. Can you post a screenshot of your EEPROM settings.

[TFMike]

My mistake, also I accidentally uploaded the config file from the outdated firmware earlier so I deleted it to avoid confusion, this screencap here should have all the settings from the new upload:

[Nylocke]

Those settings all look fine. Is the connector on the RAMBo actually delivering 12V to the hotend?

[Mac The Knife]

Extr.1? Unless Mattercontrol is changing the labeling, Extr.1 is for a second extruder. Extr.0 is for the primary extruder.

[TFMike]

Extr.1? Unless Mattercontrol is changing the labeling, Extr.1 is for a second extruder. Extr.0 is for the primary extruder.

Ok, so could that be the reason? I am using the latest version for what it's worth.

Those settings all look fine. Is the connector on the RAMBo actually delivering 12V to the hotend?

No idea, how do I check that?

[Nylocke]

Do you have a multimeter? Turn it on volt mode and touch them to the pos and neg

[TFMike]

It reads 11 or -11 depending on the orientation of the black and red

[Nylocke]

11 exactly? Thats a bit low, but it shouldn't make too much of a difference. Have you checked the connection to make sure you have good continuity to the heater cartridge? What is the resistance of the heater cartridge? It should measure around 3.6 ohms if my math is correct (40 watt cartridge @ 12V, W=V*I, W/V=I, 40/12=3.33333A, V=I*R, V/I=R, 12V/3.33333A=3.6ohms).

[TFMike]

It's a 25 watt cartridge, but after all of that hullabaloo it was damn sloppy connection to it that led to all this, I just had a convo with JJ and touched my thermistor to my heater cartridge and told the printer to heat up and did....of all the reason for it to fail, that was why :/

[predawnsky]

oh wow thats insane