From d01ee7e7b5e403d290e45d6507c85133437da488 Mon Sep 17 00:00:00 2001
From: Jim Morris <morris@wolfman.com>
Date: Wed, 17 Jul 2013 16:14:07 -0700
Subject: [PATCH] fix zjerk being the same for delta as xy jerk add more delta
defaults on delta make second home even slower
---
Marlin/Configuration.h | 4 ++++
Marlin/Configuration_adv.h | 3 +++
Marlin/Marlin_main.cpp | 4 ++++
3 files changed, 11 insertions(+)
diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 130a7bd5ba..f943568fd8 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -431,7 +431,11 @@ const bool Z_ENDSTOPS_INVERTING = true; // set to true to invert the logic of th
// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
#define DEFAULT_XYJERK 20.0 // (mm/sec)
+#ifdef DELTA
+#define DEFAULT_ZJERK 20.0 // (mm/sec) Must be same as XY for delta
+#else
#define DEFAULT_ZJERK 0.4 // (mm/sec)
+#endif // DELTA
#define DEFAULT_EJERK 5.0 // (mm/sec)
//===========================================================================
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index fd4bda0db6..943e9e1e15 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -177,7 +177,10 @@
#define DEFAULT_MINSEGMENTTIME 20000
// If defined the movements slow down when the look ahead buffer is only half full
+// (don't use SLOWDOWN with DELTA because DELTA generates hundreds of segments per second)
+#ifndef DELTA
#define SLOWDOWN
+#endif
// Frequency limit
// See nophead's blog for more info
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 38da1db08e..fc0c952240 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -712,7 +712,11 @@ static void homeaxis(int axis) {
st_synchronize();
destination[axis] = 2*home_retract_mm(axis) * home_dir(axis);
+#ifdef DELTA
+ feedrate = homing_feedrate[axis]/10;
+#else
feedrate = homing_feedrate[axis]/2 ;
+#endif
plan_buffer_line(destination[X_AXIS], destination[Y_AXIS], destination[Z_AXIS], destination[E_AXIS], feedrate/60, active_extruder);
st_synchronize();
--
GitLab