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Sprinter Firmware changes.

Posted by RepRapRaj83 
Sprinter Firmware changes.
June 18, 2012 11:46AM
Hi to all on the forum,

I have been slowly getting to grips with Sanguinololu electronics after (finally) changing over form Gen3.
Sprinter has been the firmware which I intend to upload to these electrronics which will be running a Mendel (not Prusa)

With regards to the firmware. I find that when sending manual extrude commands to the printer through Pronterface, the extruder moves quite fast and is on the brink of missing steps. The Trimpot is turned up and the extruder stepper driver heatsink is hot to the touch so i don't want to turn this up any further.

I have amended the following section outlined in bold on the firmware configuration.h file (as well as stepspermm parmeters) to see if this helps with controlling it but no luck

//// MOVEMENT SETTINGS
//-----------------------------------------------------------------------
const int NUM_AXIS = 4; // The axis order in all axis related arrays is X, Y, Z, E
#define _MAX_FEEDRATE {200, 200, 1.5, 25} // (mm/sec)
#define _HOMING_FEEDRATE {1500,1500,120} // (mm/min) !!
#define _AXIS_RELATIVE_MODES {false, false, false, false}

#define MAX_STEP_FREQUENCY 30000 // Max step frequency

Steps were changed from {400, 400, 2, 45} respectively.

Could anyone point me towards where else in the firmware, parameters can be tweaked to control axis speed levels.

Thanks to all

Raj
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