diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h index 6a2ebe6b5..ca72ae2b5 100644 --- a/Marlin/Configuration.h +++ b/Marlin/Configuration.h @@ -51,6 +51,9 @@ #define MOTHERBOARD 7 #endif +// This defines the number of extruders +#define EXTRUDERS 1 + //// The following define selects which power supply you have. Please choose the one that matches your setup // 1 = ATX // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC) diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h index 7fc95b997..afdd68441 100644 --- a/Marlin/Configuration_adv.h +++ b/Marlin/Configuration_adv.h @@ -63,21 +63,31 @@ //This is for controlling a fan to cool down the stepper drivers //it will turn on when any driver is enabled //and turn off after the set amount of seconds from last driver being disabled again -//#define CONTROLLERFAN_PIN 23 //Pin used for the fan to cool controller, comment out to disable this function -#define CONTROLLERFAN_SEC 60 //How many seconds, after all motors were disabled, the fan should run +#define CONTROLLERFAN_PIN -1 //Pin used for the fan to cool controller (-1 to disable) +#define CONTROLLERFAN_SECS 60 //How many seconds, after all motors were disabled, the fan should run +#define CONTROLLERFAN_SPEED 255 // == full speed // When first starting the main fan, run it at full speed for the // given number of milliseconds. This gets the fan spinning reliably // before setting a PWM value. (Does not work with software PWM for fan on Sanguinololu) //#define FAN_KICKSTART_TIME 100 +// Extruder cooling fans +// Configure fan pin outputs to automatically turn on/off when the associated +// extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE. +// Multiple extruders can be assigned to the same pin in which case +// the fan will turn on when any selected extruder is above the threshold. +#define EXTRUDER_0_AUTO_FAN_PIN -1 +#define EXTRUDER_1_AUTO_FAN_PIN -1 +#define EXTRUDER_2_AUTO_FAN_PIN -1 +#define EXTRUDER_AUTO_FAN_TEMPERATURE 50 +#define EXTRUDER_AUTO_FAN_SPEED 255 // == full speed + + //=========================================================================== //=============================Mechanical Settings=========================== //=========================================================================== -// This defines the number of extruders -#define EXTRUDERS 1 - #define ENDSTOPS_ONLY_FOR_HOMING // If defined the endstops will only be used for homing @@ -210,9 +220,9 @@ // However, THIS FEATURE IS UNSAFE!, as it will only work if interrupts are disabled. And the code could hang in an interrupt routine with interrupts disabled. //#define WATCHDOG_RESET_MANUAL #endif - -// Enable the option to stop SD printing when hitting and endstops, needs to be enabled from the LCD menu when this option is enabled. -//#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED + +// Enable the option to stop SD printing when hitting and endstops, needs to be enabled from the LCD menu when this option is enabled. +//#define ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED // extruder advance constant (s2/mm3) // @@ -276,7 +286,7 @@ const unsigned int dropsegments=5; //everything with less than this number of st #else #define BLOCK_BUFFER_SIZE 16 // maximize block buffer #endif - + //The ASCII buffer for recieving from the serial: #define MAX_CMD_SIZE 96 diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp index 71e6aa6e6..c59557c8e 100644 --- a/Marlin/Marlin_main.cpp +++ b/Marlin/Marlin_main.cpp @@ -319,7 +319,7 @@ void setup_photpin() void setup_powerhold() { #ifdef SUICIDE_PIN - #if (SUICIDE_PIN> -1) + #if (SUICIDE_PIN> 0) SET_OUTPUT(SUICIDE_PIN); WRITE(SUICIDE_PIN, HIGH); #endif @@ -410,14 +410,10 @@ void setup() servo_init(); lcd_init(); - - #ifdef CONTROLLERFAN_PIN + + #if CONTROLLERFAN_PIN > 0 SET_OUTPUT(CONTROLLERFAN_PIN); //Set pin used for driver cooling fan - #endif - - #ifdef EXTRUDERFAN_PIN - SET_OUTPUT(EXTRUDERFAN_PIN); //Set pin used for extruder cooling fan - #endif + #endif } @@ -1040,6 +1036,10 @@ void process_commands() break; } } + #if FAN_PIN > 0 + if (pin_number == FAN_PIN) + fanSpeed = pin_status; + #endif if (pin_number > -1) { pinMode(pin_number, OUTPUT); @@ -2064,7 +2064,12 @@ void prepare_arc_move(char isclockwise) { previous_millis_cmd = millis(); } -#ifdef CONTROLLERFAN_PIN +#if CONTROLLERFAN_PIN > 0 + +#if CONTROLLERFAN_PIN == FAN_PIN + #error "You cannot set CONTROLLERFAN_PIN equal to FAN_PIN" +#endif + unsigned long lastMotor = 0; //Save the time for when a motor was turned on last unsigned long lastMotorCheck = 0; @@ -2085,35 +2090,17 @@ void controllerFan() { lastMotor = millis(); //... set time to NOW so the fan will turn on } - - if ((millis() - lastMotor) >= (CONTROLLERFAN_SEC*1000UL) || lastMotor == 0) //If the last time any driver was enabled, is longer since than CONTROLLERSEC... + + if ((millis() - lastMotor) >= (CONTROLLERFAN_SECS*1000UL) || lastMotor == 0) //If the last time any driver was enabled, is longer since than CONTROLLERSEC... { - WRITE(CONTROLLERFAN_PIN, LOW); //... turn the fan off + digitalWrite(CONTROLLERFAN_PIN, 0); + analogWrite(CONTROLLERFAN_PIN, 0); } else { - WRITE(CONTROLLERFAN_PIN, HIGH); //... turn the fan on - } - } -} -#endif - -#ifdef EXTRUDERFAN_PIN -unsigned long lastExtruderCheck = 0; - -void extruderFan() -{ - if ((millis() - lastExtruderCheck) >= 2500) //Not a time critical function, so we only check every 2500ms - { - lastExtruderCheck = millis(); - - if (degHotend(active_extruder) < EXTRUDERFAN_DEC) - { - WRITE(EXTRUDERFAN_PIN, LOW); //... turn the fan off - } - else - { - WRITE(EXTRUDERFAN_PIN, HIGH); //... turn the fan on + // allows digital or PWM fan output to be used (see M42 handling) + digitalWrite(CONTROLLERFAN_PIN, CONTROLLERFAN_SPEED); + analogWrite(CONTROLLERFAN_PIN, CONTROLLERFAN_SPEED); } } } @@ -2137,11 +2124,11 @@ void manage_inactivity() } } } - #if( KILL_PIN>-1 ) + #if KILL_PIN > 0 if( 0 == READ(KILL_PIN) ) kill(); #endif - #ifdef CONTROLLERFAN_PIN + #if CONTROLLERFAN_PIN > 0 controllerFan(); //Check if fan should be turned on to cool stepper drivers down #endif #ifdef EXTRUDER_RUNOUT_PREVENT diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp index 3bc5e9c89..f8d0af9e7 100644 --- a/Marlin/stepper.cpp +++ b/Marlin/stepper.cpp @@ -69,9 +69,9 @@ volatile long endstops_stepsTotal,endstops_stepsDone; static volatile bool endstop_x_hit=false; static volatile bool endstop_y_hit=false; static volatile bool endstop_z_hit=false; -#ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED -bool abort_on_endstop_hit = false; -#endif +#ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED +bool abort_on_endstop_hit = false; +#endif static bool old_x_min_endstop=false; static bool old_x_max_endstop=false; @@ -184,20 +184,20 @@ void checkHitEndstops() SERIAL_ECHOPAIR(" Z:",(float)endstops_trigsteps[Z_AXIS]/axis_steps_per_unit[Z_AXIS]); LCD_MESSAGEPGM(MSG_ENDSTOPS_HIT "Z"); } - SERIAL_ECHOLN(""); + SERIAL_ECHOLN(""); endstop_x_hit=false; endstop_y_hit=false; - endstop_z_hit=false; -#ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED - if (abort_on_endstop_hit) - { + endstop_z_hit=false; +#ifdef ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED + if (abort_on_endstop_hit) + { card.sdprinting = false; card.closefile(); - quickStop(); + quickStop(); setTargetHotend0(0); setTargetHotend1(0); setTargetHotend2(0); - } + } #endif } } @@ -879,10 +879,6 @@ void st_init() disable_e2(); #endif - #ifdef CONTROLLERFAN_PIN - SET_OUTPUT(CONTROLLERFAN_PIN); //Set pin used for driver cooling fan - #endif - // waveform generation = 0100 = CTC TCCR1B &= ~(1< 0 || EXTRUDER_1_AUTO_FAN_PIN > 0 || EXTRUDER_2_AUTO_FAN_PIN > 0 + static unsigned long extruder_autofan_last_check; +#endif #if EXTRUDERS > 3 # error Unsupported number of extruders @@ -306,6 +307,76 @@ int getHeaterPower(int heater) { return soft_pwm[heater]; } +#if EXTRUDER_0_AUTO_FAN_PIN > 0 || EXTRUDER_1_AUTO_FAN_PIN > 0 || EXTRUDER_2_AUTO_FAN_PIN > 0 + + #if FAN_PIN > 0 + #if EXTRUDER_0_AUTO_FAN_PIN == FAN_PIN + #error "You cannot set EXTRUDER_0_AUTO_FAN_PIN equal to FAN_PIN" + #endif + #if EXTRUDER_1_AUTO_FAN_PIN == FAN_PIN + #error "You cannot set EXTRUDER_1_AUTO_FAN_PIN equal to FAN_PIN" + #endif + #if EXTRUDER_2_AUTO_FAN_PIN == FAN_PIN + #error "You cannot set EXTRUDER_2_AUTO_FAN_PIN equal to FAN_PIN" + #endif + #endif + +void setExtruderAutoFanState(int pin, bool state) +{ + unsigned char newFanSpeed = (state != 0) ? EXTRUDER_AUTO_FAN_SPEED : 0; + // this idiom allows both digital and PWM fan outputs (see M42 handling). + pinMode(pin, OUTPUT); + digitalWrite(pin, newFanSpeed); + analogWrite(pin, newFanSpeed); +} + +void checkExtruderAutoFans() +{ + uint8_t fanState = 0; + + // which fan pins need to be turned on? + #if EXTRUDER_0_AUTO_FAN_PIN > 0 + if (current_temperature[0] > EXTRUDER_AUTO_FAN_TEMPERATURE) + fanState |= 1; + #endif + #if EXTRUDER_1_AUTO_FAN_PIN > 0 + if (current_temperature[1] > EXTRUDER_AUTO_FAN_TEMPERATURE) + { + if (EXTRUDER_1_AUTO_FAN_PIN == EXTRUDER_0_AUTO_FAN_PIN) + fanState |= 1; + else + fanState |= 2; + } + #endif + #if EXTRUDER_2_AUTO_FAN_PIN > 0 + if (current_temperature[2] > EXTRUDER_AUTO_FAN_TEMPERATURE) + { + if (EXTRUDER_2_AUTO_FAN_PIN == EXTRUDER_0_AUTO_FAN_PIN) + fanState |= 1; + else if (EXTRUDER_2_AUTO_FAN_PIN == EXTRUDER_1_AUTO_FAN_PIN) + fanState |= 2; + else + fanState |= 4; + } + #endif + + // update extruder auto fan states + #if EXTRUDER_0_AUTO_FAN_PIN > 0 + setExtruderAutoFanState(EXTRUDER_0_AUTO_FAN_PIN, (fanState & 1) != 0); + #endif + #if EXTRUDER_1_AUTO_FAN_PIN > 0 + if (EXTRUDER_1_AUTO_FAN_PIN != EXTRUDER_0_AUTO_FAN_PIN) + setExtruderAutoFanState(EXTRUDER_1_AUTO_FAN_PIN, (fanState & 2) != 0); + #endif + #if EXTRUDER_2_AUTO_FAN_PIN > 0 + if (EXTRUDER_2_AUTO_FAN_PIN != EXTRUDER_0_AUTO_FAN_PIN + && EXTRUDER_2_AUTO_FAN_PIN != EXTRUDER_1_AUTO_FAN_PIN) + setExtruderAutoFanState(EXTRUDER_2_AUTO_FAN_PIN, (fanState & 4) != 0); + #endif +} + +#endif // any extruder auto fan pins set + void manage_heater() { float pid_input; @@ -398,8 +469,15 @@ void manage_heater() #endif } // End extruder for loop - + #if EXTRUDER_0_AUTO_FAN_PIN > 0 || EXTRUDER_1_AUTO_FAN_PIN > 0 || EXTRUDER_2_AUTO_FAN_PIN > 0 + if(millis() - extruder_autofan_last_check > 2500) // only need to check fan state very infrequently + { + checkExtruderAutoFans(); + extruder_autofan_last_check = millis(); + } + #endif + #ifndef PIDTEMPBED if(millis() - previous_millis_bed_heater < BED_CHECK_INTERVAL) return; diff --git a/README.md b/README.md index 309fdd1d1..ada4e8382 100644 --- a/README.md +++ b/README.md @@ -1,223 +1,227 @@ -WARNING: --------- -THIS IS RELEASE CANDIDATE 2 FOR MARLIN 1.0.0 - -The configuration is now split in two files -Configuration.h for the normal settings -Configuration_adv.h for the advanced settings - -Gen7T is not supported. - -Quick Information -=================== -This RepRap firmware is a mashup between Sprinter, grbl and many original parts. - -Derived from Sprinter and Grbl by Erik van der Zalm. -Sprinters lead developers are Kliment and caru. -Grbls lead developer is Simen Svale Skogsrud. Sonney Jeon (Chamnit) improved some parts of grbl -A fork by bkubicek for the Ultimaker was merged, and further development was aided by him. -Some features have been added by: -Lampmaker, Bradley Feldman, and others... - - -Features: - -* Interrupt based movement with real linear acceleration -* High steprate -* Look ahead (Keep the speed high when possible. High cornering speed) -* Interrupt based temperature protection -* preliminary support for Matthew Roberts advance algorithm - For more info see: http://reprap.org/pipermail/reprap-dev/2011-May/003323.html -* Full endstop support -* SD Card support -* SD Card folders (works in pronterface) -* SD Card autostart support -* LCD support (ideally 20x4) -* LCD menu system for autonomous SD card printing, controlled by an click-encoder. -* EEPROM storage of e.g. max-velocity, max-acceleration, and similar variables -* many small but handy things originating from bkubicek's fork. -* Arc support -* Temperature oversampling -* Dynamic Temperature setpointing aka "AutoTemp" -* Support for QTMarlin, a very beta GUI for PID-tuning and velocity-acceleration testing. https://github.com/bkubicek/QTMarlin -* Endstop trigger reporting to the host software. -* Updated sdcardlib -* Heater power reporting. Useful for PID monitoring. -* PID tuning -* CoreXY kinematics (www.corexy.com/theory.html) -* Configurable serial port to support connection of wireless adaptors. - -The default baudrate is 250000. This baudrate has less jitter and hence errors than the usual 115200 baud, but is less supported by drivers and host-environments. - - -Differences and additions to the already good Sprinter firmware: -================================================================ - -*Look-ahead:* - -Marlin has look-ahead. While sprinter has to break and re-accelerate at each corner, -lookahead will only decelerate and accelerate to a velocity, -so that the change in vectorial velocity magnitude is less than the xy_jerk_velocity. -This is only possible, if some future moves are already processed, hence the name. -It leads to less over-deposition at corners, especially at flat angles. - -*Arc support:* - -Slic3r can find curves that, although broken into segments, were ment to describe an arc. -Marlin is able to print those arcs. The advantage is the firmware can choose the resolution, -and can perform the arc with nearly constant velocity, resulting in a nice finish. -Also, less serial communication is needed. - -*Temperature Oversampling:* - -To reduce noise and make the PID-differential term more useful, 16 ADC conversion results are averaged. - -*AutoTemp:* - -If your gcode contains a wide spread of extruder velocities, or you realtime change the building speed, the temperature should be changed accordingly. -Usually, higher speed requires higher temperature. -This can now be performed by the AutoTemp function -By calling M109 S T F you enter the autotemp mode. - -You can leave it by calling M109 without any F. -If active, the maximal extruder stepper rate of all buffered moves will be calculated, and named "maxerate" [steps/sec]. -The wanted temperature then will be set to t=tempmin+factor*maxerate, while being limited between tempmin and tempmax. -If the target temperature is set manually or by gcode to a value less then tempmin, it will be kept without change. -Ideally, your gcode can be completely free of temperature controls, apart from a M109 S T F in the start.gcode, and a M109 S0 in the end.gcode. - -*EEPROM:* - -If you know your PID values, the acceleration and max-velocities of your unique machine, you can set them, and finally store them in the EEPROM. -After each reboot, it will magically load them from EEPROM, independent what your Configuration.h says. - -*LCD Menu:* - -If your hardware supports it, you can build yourself a LCD-CardReader+Click+encoder combination. It will enable you to realtime tune temperatures, -accelerations, velocities, flow rates, select and print files from the SD card, preheat, disable the steppers, and do other fancy stuff. -One working hardware is documented here: http://www.thingiverse.com/thing:12663 -Also, with just a 20x4 or 16x2 display, useful data is shown. - -*SD card folders:* - -If you have an SD card reader attached to your controller, also folders work now. Listing the files in pronterface will show "/path/subpath/file.g". -You can write to file in a subfolder by specifying a similar text using small letters in the path. -Also, backup copies of various operating systems are hidden, as well as files not ending with ".g". - -*SD card folders:* - -If you place a file auto[0-9].g into the root of the sd card, it will be automatically executed if you boot the printer. The same file will be executed by selecting "Autostart" from the menu. -First *0 will be performed, than *1 and so on. That way, you can heat up or even print automatically without user interaction. - -*Endstop trigger reporting:* - -If an endstop is hit while moving towards the endstop, the location at which the firmware thinks that the endstop was triggered is outputed on the serial port. -This is useful, because the user gets a warning message. -However, also tools like QTMarlin can use this for finding acceptable combinations of velocity+acceleration. - -*Coding paradigm:* - -Not relevant from a user side, but Marlin was split into thematic junks, and has tried to partially enforced private variables. -This is intended to make it clearer, what interacts which what, and leads to a higher level of modularization. -We think that this is a useful prestep for porting this firmware to e.g. an ARM platform in the future. -A lot of RAM (with enabled LCD ~2200 bytes) was saved by storing char []="some message" in Program memory. -In the serial communication, a #define based level of abstraction was enforced, so that it is clear that -some transfer is information (usually beginning with "echo:"), an error "error:", or just normal protocol, -necessary for backwards compatibility. - -*Interrupt based temperature measurements:* - -An interrupt is used to manage ADC conversions, and enforce checking for critical temperatures. -This leads to less blocking in the heater management routine. - - -Non-standard M-Codes, different to an old version of sprinter: -============================================================== -Movement: - -* G2 - CW ARC -* G3 - CCW ARC - -General: - -* M17 - Enable/Power all stepper motors. Compatibility to ReplicatorG. -* M18 - Disable all stepper motors; same as M84.Compatibility to ReplicatorG. -* M30 - Print time since last M109 or SD card start to serial -* M42 - Change pin status via gcode -* M80 - Turn on Power Supply -* M81 - Turn off Power Supply -* M114 - Output current position to serial port -* M119 - Output Endstop status to serial port - -Movement variables: - -* M202 - Set max acceleration in units/s^2 for travel moves (M202 X1000 Y1000) Unused in Marlin!! -* M203 - Set maximum feedrate that your machine can sustain (M203 X200 Y200 Z300 E10000) in mm/sec -* M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2 also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate -* M206 - set home offsets. This sets the X,Y,Z coordinates of the endstops (and is added to the {X,Y,Z}_HOME_POS configuration options (and is also added to the coordinates, if any, provided to G82, as with earlier firmware) -* M220 - set build speed mulitplying S:factor in percent ; aka "realtime tuneing in the gcode". So you can slow down if you have islands in one height-range, and speed up otherwise. -* M221 - set the extrude multiplying S:factor in percent -* M400 - Finish all buffered moves. - -Temperature variables: -* M301 - Set PID parameters P I and D -* M302 - Allow cold extrudes -* M303 - PID relay autotune S sets the target temperature. (default target temperature = 150C) - -Advance: - -* M200 - Set filament diameter for advance -* M205 - advanced settings: minimum travel speed S=while printing T=travel only, B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk - -EEPROM: - -* M500 - stores paramters in EEPROM. This parameters are stored: axis_steps_per_unit, max_feedrate, max_acceleration ,acceleration,retract_acceleration, - minimumfeedrate,mintravelfeedrate,minsegmenttime, jerk velocities, PID -* M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily). -* M502 - reverts to the default "factory settings". You still need to store them in EEPROM afterwards if you want to. -* M503 - print the current settings (from memory not from eeprom) - -MISC: - -* M240 - Trigger a camera to take a photograph -* M999 - Restart after being stopped by error - -Configuring and compilation: -============================ - -Install the arduino software IDE/toolset v23 (Some configurations also work with 1.x.x) - http://www.arduino.cc/en/Main/Software - -For gen6/gen7 and sanguinololu the Sanguino directory in the Marlin dir needs to be copied to the arduino environment. - copy ArduinoAddons\Arduino_x.x.x\sanguino \hardware\Sanguino - -Install Ultimaker's RepG 25 build - http://software.ultimaker.com -For SD handling and as better substitute (apart from stl manipulation) download -the very nice Kliment's printrun/pronterface https://github.com/kliment/Printrun - -Copy the Ultimaker Marlin firmware - https://github.com/ErikZalm/Marlin/tree/Marlin_v1 - (Use the download button) - -Start the arduino IDE. -Select Tools -> Board -> Arduino Mega 2560 or your microcontroller -Select the correct serial port in Tools ->Serial Port -Open Marlin.pde - -Click the Verify/Compile button - -Click the Upload button -If all goes well the firmware is uploading - -Start Ultimaker's Custom RepG 25 -Make sure Show Experimental Profiles is enabled in Preferences -Select Sprinter as the Driver - -Press the Connect button. - -KNOWN ISSUES: RepG will display: Unknown: marlin x.y.z - -That's ok. Enjoy Silky Smooth Printing. - - - +========================== +Marlin 3D Printer Firmware +========================== + +Notes: +----- + +The configuration is now split in two files: + Configuration.h for the normal settings + Configuration_adv.h for the advanced settings + +Gen7T is not supported. + +Quick Information +=================== +This RepRap firmware is a mashup between Sprinter, grbl and many original parts. + +Derived from Sprinter and Grbl by Erik van der Zalm. +Sprinters lead developers are Kliment and caru. +Grbls lead developer is Simen Svale Skogsrud. Sonney Jeon (Chamnit) improved some parts of grbl +A fork by bkubicek for the Ultimaker was merged, and further development was aided by him. +Some features have been added by: +Lampmaker, Bradley Feldman, and others... + + +Features: + +* Interrupt based movement with real linear acceleration +* High steprate +* Look ahead (Keep the speed high when possible. High cornering speed) +* Interrupt based temperature protection +* preliminary support for Matthew Roberts advance algorithm + For more info see: http://reprap.org/pipermail/reprap-dev/2011-May/003323.html +* Full endstop support +* SD Card support +* SD Card folders (works in pronterface) +* SD Card autostart support +* LCD support (ideally 20x4) +* LCD menu system for autonomous SD card printing, controlled by an click-encoder. +* EEPROM storage of e.g. max-velocity, max-acceleration, and similar variables +* many small but handy things originating from bkubicek's fork. +* Arc support +* Temperature oversampling +* Dynamic Temperature setpointing aka "AutoTemp" +* Support for QTMarlin, a very beta GUI for PID-tuning and velocity-acceleration testing. https://github.com/bkubicek/QTMarlin +* Endstop trigger reporting to the host software. +* Updated sdcardlib +* Heater power reporting. Useful for PID monitoring. +* PID tuning +* CoreXY kinematics (www.corexy.com/theory.html) +* Configurable serial port to support connection of wireless adaptors. +* Automatic operation of extruder/cold-end cooling fans based on nozzle temperature + +The default baudrate is 250000. This baudrate has less jitter and hence errors than the usual 115200 baud, but is less supported by drivers and host-environments. + + +Differences and additions to the already good Sprinter firmware: +================================================================ + +*Look-ahead:* + +Marlin has look-ahead. While sprinter has to break and re-accelerate at each corner, +lookahead will only decelerate and accelerate to a velocity, +so that the change in vectorial velocity magnitude is less than the xy_jerk_velocity. +This is only possible, if some future moves are already processed, hence the name. +It leads to less over-deposition at corners, especially at flat angles. + +*Arc support:* + +Slic3r can find curves that, although broken into segments, were ment to describe an arc. +Marlin is able to print those arcs. The advantage is the firmware can choose the resolution, +and can perform the arc with nearly constant velocity, resulting in a nice finish. +Also, less serial communication is needed. + +*Temperature Oversampling:* + +To reduce noise and make the PID-differential term more useful, 16 ADC conversion results are averaged. + +*AutoTemp:* + +If your gcode contains a wide spread of extruder velocities, or you realtime change the building speed, the temperature should be changed accordingly. +Usually, higher speed requires higher temperature. +This can now be performed by the AutoTemp function +By calling M109 S T F you enter the autotemp mode. + +You can leave it by calling M109 without any F. +If active, the maximal extruder stepper rate of all buffered moves will be calculated, and named "maxerate" [steps/sec]. +The wanted temperature then will be set to t=tempmin+factor*maxerate, while being limited between tempmin and tempmax. +If the target temperature is set manually or by gcode to a value less then tempmin, it will be kept without change. +Ideally, your gcode can be completely free of temperature controls, apart from a M109 S T F in the start.gcode, and a M109 S0 in the end.gcode. + +*EEPROM:* + +If you know your PID values, the acceleration and max-velocities of your unique machine, you can set them, and finally store them in the EEPROM. +After each reboot, it will magically load them from EEPROM, independent what your Configuration.h says. + +*LCD Menu:* + +If your hardware supports it, you can build yourself a LCD-CardReader+Click+encoder combination. It will enable you to realtime tune temperatures, +accelerations, velocities, flow rates, select and print files from the SD card, preheat, disable the steppers, and do other fancy stuff. +One working hardware is documented here: http://www.thingiverse.com/thing:12663 +Also, with just a 20x4 or 16x2 display, useful data is shown. + +*SD card folders:* + +If you have an SD card reader attached to your controller, also folders work now. Listing the files in pronterface will show "/path/subpath/file.g". +You can write to file in a subfolder by specifying a similar text using small letters in the path. +Also, backup copies of various operating systems are hidden, as well as files not ending with ".g". + +*SD card folders:* + +If you place a file auto[0-9].g into the root of the sd card, it will be automatically executed if you boot the printer. The same file will be executed by selecting "Autostart" from the menu. +First *0 will be performed, than *1 and so on. That way, you can heat up or even print automatically without user interaction. + +*Endstop trigger reporting:* + +If an endstop is hit while moving towards the endstop, the location at which the firmware thinks that the endstop was triggered is outputed on the serial port. +This is useful, because the user gets a warning message. +However, also tools like QTMarlin can use this for finding acceptable combinations of velocity+acceleration. + +*Coding paradigm:* + +Not relevant from a user side, but Marlin was split into thematic junks, and has tried to partially enforced private variables. +This is intended to make it clearer, what interacts which what, and leads to a higher level of modularization. +We think that this is a useful prestep for porting this firmware to e.g. an ARM platform in the future. +A lot of RAM (with enabled LCD ~2200 bytes) was saved by storing char []="some message" in Program memory. +In the serial communication, a #define based level of abstraction was enforced, so that it is clear that +some transfer is information (usually beginning with "echo:"), an error "error:", or just normal protocol, +necessary for backwards compatibility. + +*Interrupt based temperature measurements:* + +An interrupt is used to manage ADC conversions, and enforce checking for critical temperatures. +This leads to less blocking in the heater management routine. + + +Non-standard M-Codes, different to an old version of sprinter: +============================================================== +Movement: + +* G2 - CW ARC +* G3 - CCW ARC + +General: + +* M17 - Enable/Power all stepper motors. Compatibility to ReplicatorG. +* M18 - Disable all stepper motors; same as M84.Compatibility to ReplicatorG. +* M30 - Print time since last M109 or SD card start to serial +* M42 - Change pin status via gcode +* M80 - Turn on Power Supply +* M81 - Turn off Power Supply +* M114 - Output current position to serial port +* M119 - Output Endstop status to serial port + +Movement variables: + +* M202 - Set max acceleration in units/s^2 for travel moves (M202 X1000 Y1000) Unused in Marlin!! +* M203 - Set maximum feedrate that your machine can sustain (M203 X200 Y200 Z300 E10000) in mm/sec +* M204 - Set default acceleration: S normal moves T filament only moves (M204 S3000 T7000) im mm/sec^2 also sets minimum segment time in ms (B20000) to prevent buffer underruns and M20 minimum feedrate +* M206 - set home offsets. This sets the X,Y,Z coordinates of the endstops (and is added to the {X,Y,Z}_HOME_POS configuration options (and is also added to the coordinates, if any, provided to G82, as with earlier firmware) +* M220 - set build speed mulitplying S:factor in percent ; aka "realtime tuneing in the gcode". So you can slow down if you have islands in one height-range, and speed up otherwise. +* M221 - set the extrude multiplying S:factor in percent +* M400 - Finish all buffered moves. + +Temperature variables: +* M301 - Set PID parameters P I and D +* M302 - Allow cold extrudes +* M303 - PID relay autotune S sets the target temperature. (default target temperature = 150C) + +Advance: + +* M200 - Set filament diameter for advance +* M205 - advanced settings: minimum travel speed S=while printing T=travel only, B=minimum segment time X= maximum xy jerk, Z=maximum Z jerk + +EEPROM: + +* M500 - stores paramters in EEPROM. This parameters are stored: axis_steps_per_unit, max_feedrate, max_acceleration ,acceleration,retract_acceleration, + minimumfeedrate,mintravelfeedrate,minsegmenttime, jerk velocities, PID +* M501 - reads parameters from EEPROM (if you need reset them after you changed them temporarily). +* M502 - reverts to the default "factory settings". You still need to store them in EEPROM afterwards if you want to. +* M503 - print the current settings (from memory not from eeprom) + +MISC: + +* M240 - Trigger a camera to take a photograph +* M999 - Restart after being stopped by error + +Configuring and compilation: +============================ + +Install the arduino software IDE/toolset v23 (Some configurations also work with 1.x.x) + http://www.arduino.cc/en/Main/Software + +For gen6/gen7 and sanguinololu the Sanguino directory in the Marlin dir needs to be copied to the arduino environment. + copy ArduinoAddons\Arduino_x.x.x\sanguino \hardware\Sanguino + +Install Ultimaker's RepG 25 build + http://software.ultimaker.com +For SD handling and as better substitute (apart from stl manipulation) download +the very nice Kliment's printrun/pronterface https://github.com/kliment/Printrun + +Copy the Ultimaker Marlin firmware + https://github.com/ErikZalm/Marlin/tree/Marlin_v1 + (Use the download button) + +Start the arduino IDE. +Select Tools -> Board -> Arduino Mega 2560 or your microcontroller +Select the correct serial port in Tools ->Serial Port +Open Marlin.pde + +Click the Verify/Compile button + +Click the Upload button +If all goes well the firmware is uploading + +Start Ultimaker's Custom RepG 25 +Make sure Show Experimental Profiles is enabled in Preferences +Select Sprinter as the Driver + +Press the Connect button. + +KNOWN ISSUES: RepG will display: Unknown: marlin x.y.z + +That's ok. Enjoy Silky Smooth Printing. + + +