0.92.8 Z-probe hits the bed with G32 command (Github 2 Feb 2016 dev version)

Comments

• paul_delta

  February 2016 edited February 2016

  PS: Commands.cpp looks different for Case G32 procedure:
  
  #if FEATURE_AUTOLEVEL
          case 32: // G32 Auto-Bed leveling
          {
  #if defined(Z_PROBE_MIN_TEMPERATURE) && Z_PROBE_MIN_TEMPERATURE
              float actTemp[NUM_EXTRUDER];
              for(int i = 0; i < NUM_EXTRUDER; i++)
                  actTemp[i] = extruder[i].tempControl.targetTemperatureC;
              Printer::moveToReal(IGNORE_COORDINATE,IGNORE_COORDINATE,ZHOME_HEAT_HEIGHT,IGNORE_COORDINATE,Printer::homingFeedrate[Z_AXIS]);
              Commands::waitUntilEndOfAllMoves();
  #if ZHOME_HEAT_ALL
              for(int i = 0; i < NUM_EXTRUDER; i++) {
                  Extruder::setTemperatureForExtruder(RMath::max(actTemp[i],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),i,false,false);
              }
              for(int i = 0; i < NUM_EXTRUDER; i++) {
                  if(extruder[i].tempControl.currentTemperatureC < ZPROBE_MIN_TEMPERATURE)
                      Extruder::setTemperatureForExtruder(RMath::max(actTemp[i],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),i,false,true);
              }
  #else
              if(extruder[Extruder::current->id].tempControl.currentTemperatureC < ZPROBE_MIN_TEMPERATURE)
                  Extruder::setTemperatureForExtruder(RMath::max(actTemp[Extruder::current->id],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),Extruder::current->id,false,true);
  #endif
  #endif
              runBedLeveling(com);
  #if defined(Z_PROBE_MIN_TEMPERATURE) && Z_PROBE_MIN_TEMPERATURE
  #if ZHOME_HEAT_ALL
              for(int i = 0; i < NUM_EXTRUDER; i++) {
                  Extruder::setTemperatureForExtruder(RMath::max(actTemp[i],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),i,false,false);
              }
              for(int i = 0; i < NUM_EXTRUDER; i++) {
                  if(extruder[i].tempControl.currentTemperatureC < ZPROBE_MIN_TEMPERATURE)
                      Extruder::setTemperatureForExtruder(RMath::max(actTemp[i],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),i,false,true);
              }
  #else
              if(extruder[Extruder::current->id].tempControl.currentTemperatureC < ZPROBE_MIN_TEMPERATURE)
                  Extruder::setTemperatureForExtruder(RMath::max(actTemp[Extruder::current->id],static_cast<float>(ZPROBE_MIN_TEMPERATURE)),Extruder::current->id,false,true);
  #endif
  #endif
              }
              break;
  
• paul_delta

  February 2016 edited February 2016

  I've found the problem - it's #define ZHOME_HEAT_HEIGHT 20. My probe is much lower
  It's good to make a check if ZHOME_HEAT_HEIGHT is not less than z-probe height + z-probe bed height. Or just calculate it automatically.
  
  Also we need to check for Z_PROBE_REQUIRES_HEATING at:
          case 32: // G32 Auto-Bed leveling
          {
  #if defined(Z_PROBE_MIN_TEMPERATURE) && Z_PROBE_MIN_TEMPERATURE
  
  because it moves to heat position even if Z_PROBE_REQUIRES_HEATING = 0 and makes it twice
  
  
  
• Repetier

  February 2016

  I see. I have now modified it to heat only when enabled and then go to max(probe height, heat height) so that it should work in any case. This all came originally for sensor inside nozzle so zprobeheight was 0 and the problems never appeared (ok and I needed to heat anyway).