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@@ -41,20 +41,20 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
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#define X_MIN_POS 0
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#define Y_MAX_POS 210
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#define Y_MIN_POS -1.2
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-#define Z_MAX_POS 202
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+#define Z_MAX_POS 210
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#define Z_MIN_POS 0.23
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#define NUM_AXIS 4 // The axis order in all axis related arrays is X, Y, Z, E
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#define HOMING_FEEDRATE {3000, 3000, 800, 0} // set the homing speeds (mm/min)
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-#define DEFAULT_MAX_FEEDRATE {500, 500, 1800, 25} // (mm/sec)
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+#define DEFAULT_MAX_FEEDRATE {500, 500, 1000, 25} // (mm/sec)
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#define DEFAULT_MAX_ACCELERATION {9000,9000,1000,10000} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.
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#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
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#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for retracts
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-#define MANUAL_FEEDRATE {3000, 3000, 2000, 100} // set the speeds for manual moves (mm/min)
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+#define MANUAL_FEEDRATE {3000, 3000, 1000, 100} // set the speeds for manual moves (mm/min)
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/*------------------------------------
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@@ -183,12 +183,46 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
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#define X_PROBE_OFFSET_FROM_EXTRUDER 23 // Z probe to nozzle X offset: -left +right
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#define Y_PROBE_OFFSET_FROM_EXTRUDER 8 // Z probe to nozzle Y offset: -front +behind
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#define Z_PROBE_OFFSET_FROM_EXTRUDER -0.4 // Z probe to nozzle Z offset: -below (always!)
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+#endif
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+// Bed Temperature Control
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+// Select PID or bang-bang with PIDTEMPBED. If bang-bang, BED_LIMIT_SWITCHING will enable hysteresis
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+//
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+// Uncomment this to enable PID on the bed. It uses the same frequency PWM as the extruder.
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+// If your PID_dT above is the default, and correct for your hardware/configuration, that means 7.689Hz,
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+// which is fine for driving a square wave into a resistive load and does not significantly impact you FET heating.
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+// This also works fine on a Fotek SSR-10DA Solid State Relay into a 250W heater.
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+// If your configuration is significantly different than this and you don't understand the issues involved, you probably
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+// shouldn't use bed PID until someone else verifies your hardware works.
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+// If this is enabled, find your own PID constants below.
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+//#define PIDTEMPBED
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+//
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+//#define BED_LIMIT_SWITCHING
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+// This sets the max power delivered to the bed, and replaces the HEATER_BED_DUTY_CYCLE_DIVIDER option.
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+// all forms of bed control obey this (PID, bang-bang, bang-bang with hysteresis)
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+// setting this to anything other than 255 enables a form of PWM to the bed just like HEATER_BED_DUTY_CYCLE_DIVIDER did,
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+// so you shouldn't use it unless you are OK with PWM on your bed. (see the comment on enabling PIDTEMPBED)
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+#define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
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-#endif
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+#ifdef PIDTEMPBED
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+//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
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+//from FOPDT model - kp=.39 Tp=405 Tdead=66, Tc set to 79.2, aggressive factor of .15 (vs .1, 1, 10)
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+#define DEFAULT_bedKp 126.13
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+#define DEFAULT_bedKi 4.30
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+#define DEFAULT_bedKd 924.76
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-/*------------------------------------
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+//120v 250W silicone heater into 4mm borosilicate (MendelMax 1.5+)
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+//from pidautotune
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+// #define DEFAULT_bedKp 97.1
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+// #define DEFAULT_bedKi 1.41
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+// #define DEFAULT_bedKd 1675.16
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+
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+// FIND YOUR OWN: "M303 E-1 C8 S90" to run autotune on the bed at 90 degreesC for 8 cycles.
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+#endif // PIDTEMPBED
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+
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+
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+/*-----------------------------------
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PREHEAT SETTINGS
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*------------------------------------*/
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michalprusa