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Real-time filament diameter measurement and control

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This feature allows the printer to read the filament diameter
automatically and adjust the printer in real time.  Added code to read
an analog voltage that represents a filament diameter measurement.  This
measurement is delayed in a ring buffer to compensate for sensors that
are a distance away from the extruder.  The measurement is used to
adjust the volumetric_multiplier for the extruder.  Some additional g
codes (M404, M405, M406, M407) are used to set parameters and turn
on/off the control. g code M221 is updated.  Pins for RAMPS1.4, RAMBO,
and Printrboard are identified for analog input.  The configuration file
is updated with relevant user parameters.
This commit is contained in:
Filip Mulier 2014-08-06 19:30:57 -05:00
parent 1d0fe035f3
commit 85649a4549
7 changed files with 289 additions and 7 deletions
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8
Marlin/temperature.h
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@ -31,6 +31,14 @@
void tp_init(); //initialize the heating
void manage_heater(); //it is critical that this is called periodically.
#ifdef FILAMENT_SENSOR
// For converting raw Filament Width to milimeters
float analog2widthFil();
// For converting raw Filament Width to an extrusion ratio
int widthFil_to_size_ratio();
#endif
// low level conversion routines
// do not use these routines and variables outside of temperature.cpp
extern int target_temperature[EXTRUDERS];