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Add formula for LIN_ADVANCE_K

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With this formula, a start value for K for further fine-calibration can be calculated.
2.0.x
Sebastianv650 8 years ago committed by Scott Lahteine
parent 083d41a2c2
commit 599649e45d
1 changed files with 6 additions and 1 deletions
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7
Marlin/Configuration_adv.h
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@ -503,7 +503,12 @@
// Implementation of a linear pressure control // Implementation of a linear pressure control
// Assumption: advance = k * (delta velocity) // Assumption: advance = k * (delta velocity)
// K=0 means advance disabled. A good value for a gregs wade extruder will be around K=75 // K=0 means advance disabled.
// To get a rough start value for calibration, measure your "free filament length" between the hobbed bolt and the nozzle in cm.
// Then use the formula that fits your system, where L is the "free filament length":
// Filament diameter | 1,75mm | 3mm |
// Stiff filament (PLA) | K=47*L/10 | K=139*L/10 |
// Softer filament (ABS, nGen) | K=88*L/10 | K=260*L/10 |
//#define LIN_ADVANCE //#define LIN_ADVANCE
#if ENABLED(LIN_ADVANCE) #if ENABLED(LIN_ADVANCE)

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