Thermocouple and M109 - Printer starts without waiting for temp

Comments

• Repetier

  July 2015

  Strange thing. The routine does not differ between sensor types. It uses the the temperature returned which you see also in the host. Only wanted reason to exit is with SKIP_M109_IF_WITHIN but in your example it must be 180 and I doubt you have set it that high.

  
  

  The routine that should do the heatup and waiting is in Extruder.cpp line 582

  
  

  void Extruder::setTemperatureForExtruder(float temperatureInCelsius, uint8_t extr, bool beep, bool wait)

  {

  
  

  Could you add some 

  Com::printFLN(PSTR("pos 1"));

  
  

  in that routine to see what is happening there. Important is the the loop

  
  

  do {    ---    

  
  

  Com::printFLN(PSTR("wait "),(long)waituntil); // add this as well
  

  }

          while(waituntil == 0 || (waituntil != 0 && (millis_t)(waituntil - currentTime) < 2000000000UL));

  
  

  that should loop until temperature is reached. This is where you exit to early from your description. Hopefully that gives some insight what is going on.
• entr04y

  July 2015

  Ok, I just put the following in:

  
  

  Line 643:  Com::printFLN(PSTR("pos 1"));

  Line 662: Com::printFLN(PSTR("pos 2"));

  Line 675: Com::printFLN(PSTR("pos 3"));

  Line 676: Com::printFLN(PSTR("wait "),(long)waituntil); // add this as well

  
  

  When I ran the print (using repetier host) The log output contained

  pos 1

  pos 2

  pos 3

  pos 2

  pos 3

  pos 2

  pos 3

  and so on for a lot of lines (maybe 100 or more?)

  pos 2

  pos 3

  printing layer 1 of 80

  
  

  
  

  
  
• entr04y

  July 2015

  BTW, EXT0 watchperiod is set to 1 and SKIP_M109 is set to 2
• entr04y

  July 2015 edited July 2015

  Probably unrelated, but I am also having a couple other bits of weirdness going on... one is that when I start a print the printer homes and starts to move down to Z 5 and stops after moving down about 100mm and is unresponsive after that.  I have to reset the arduino once or twice, then it stops doing that and prints normally.  Once a print starts, I haven't had it stop in the middle yet, this only happens (so far) right when starting a print.  There is no message on the LCD or in the log when this happens.  I do have watchdog enabled, but I would think that would output some kind of message if that was what was doing it.

  
  

  The second is that when the print is completed, the printer homes as instructed and then moves to Z=10 for some reason.  My ending G-code is here:

  
  

  M104 S0 ; turn off temperature

  G28; home X Y and Z axis

  M84     ; disable motors

  
  

  The printer's dump area is defined as 0,0,400 (I have about 409mm in the Z axis) in repetier host.

  
  

  I did see a message go by in the log that said something like "resending G1 Z10"... it said more than that, but I didn't copy it down.  I'll grab it after the next print.

  
  

  
  
• Repetier

  July 2015

  Check host if you use it if there is a go to parking position activated with Z10 might be the problem also it should never go down but G28 at the end may confuse it especially if host things G28 does a zmin homing. Then it would add 10 to 0 from G28.

  
  

  What bothers me more is the wait problem did not write any wait. I guess wait is a bad choice since the host filters waits away. Better call it wtemp so we see output. And please also post modified code fucntion completely. Lines are misleading since inserting lines changes them/ I change lines, so they are probably not where I expect.

  
  

  Homing issue is strange. WHat is your z homing speed? Maybe increase it. Someone told me firmware crashes on very low speeds, but could not verify yet.