#define DEFAULT_MAX_ACCELERATION {9000,9000,100,10000} // 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.
#define DEFAULT_ACCELERATION 1500 // 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 1500 // 3000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts
#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // X, Y, Z and E max acceleration in mm/s^2 for r retracts
//
#define DEFAULT_XYJERK 20.0 // (mm/sec)
@ -186,14 +181,14 @@ const bool Z_ENDSTOPS_INVERTING = false; // set to true to invert the logic of t
// 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.
//define this to enable eeprom support
#define EEPROM_SETTINGS
//#define EEPROM_SETTINGS
//to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
// please keep turned on if you can.
#define EEPROM_CHITCHAT
//#define EEPROM_CHITCHAT
//LCD and SD support
//#define ULTRA_LCD //general lcd support, also 16x2
//#define SDSUPPORT // Enable SD Card Support in Hardware Console
#define SDSUPPORT // Enable SD Card Support in Hardware Console
The main goal of my fork is porting the brilliant Marlin firmware to GEN7 Boards.
I'm working on a 16MHz GEN7 board and have only tested with this configuration.
But there were reports about successfully running it at 20 MHz. Expect 25% faster moves and maybe some other issues.
Using lcd and sdcard support on an ATMega644(P) is not possible cause the sketch is way too big for its memory.
I switched to an ATMega1284P which has double size program memory. Unfortunately it's not supported in Arduino IDE out of the box but expect a tutorial on how to compile for it soon.
For the necessary pin breakouts I used Alfons3 design of GEN7 (https://github.com/Alfons3/Generation_7_Electronics) with an additional breakout for pin A0/D31.
I'll publish my desing as soon as possible.
You have to use different chip fuses to get Marlin running.
The fuses I'm using are lfuse: 0xF7 hfuse: 0xD4 efuse: 0xFD
For questions take a look into http://forums.reprap.org/read.php?181,118329 or send me an e-mail: christian_thalhammer@gmx.at