From 3c7fa74d605aaf53e4e113135a290b9e734c5f1b Mon Sep 17 00:00:00 2001
From: 3d-gussner <3d.gussner@gmail.com>
Date: Fri, 22 Nov 2024 08:22:37 +0100
Subject: [PATCH] Added HEATER_LOWER_TEMP 50 to lower instead of turining off
 the hotend temperature during a pause. Thanks for the request #4716 by
 @alexiri

---
 Firmware/Marlin_main.cpp                                   | 4 ++++
 Firmware/variants/MK25-RAMBo10a.h                          | 3 +++
 Firmware/variants/MK25-RAMBo13a.h                          | 3 +++
 Firmware/variants/MK25S-RAMBo10a.h                         | 3 +++
 Firmware/variants/MK25S-RAMBo13a.h                         | 3 +++
 Firmware/variants/MK3-E3DREVO.h                            | 3 +++
 Firmware/variants/MK3-E3DREVO_HF_60W.h                     | 3 +++
 Firmware/variants/MK3.h                                    | 3 +++
 Firmware/variants/MK3S-E3DREVO.h                           | 3 +++
 Firmware/variants/MK3S-E3DREVO_HF_60W.h                    | 3 +++
 Firmware/variants/MK3S.h                                   | 3 +++
 Firmware/variants/obsolete/1_75mm_MK2-RAMBo10a-E3Dv6full.h | 3 +++
 Firmware/variants/obsolete/1_75mm_MK2-RAMBo13a-E3Dv6full.h | 3 +++
 13 files changed, 40 insertions(+)

diff --git a/Firmware/Marlin_main.cpp b/Firmware/Marlin_main.cpp
index ad9860012..4790e25c0 100644
--- a/Firmware/Marlin_main.cpp
+++ b/Firmware/Marlin_main.cpp
@@ -9877,7 +9877,11 @@ void long_pause() //long pause print
 
     // Stop heaters
     heating_status = HeatingStatus::NO_HEATING;
+#ifdef HEATER_LOWER_TEMP
+    setTargetHotend(degHotend(active_extruder)- HEATER_LOWER_TEMP);
+#else
     setTargetHotend(0);
+#endif //HEATER_LOWER_TEMP
 
     // Lift z
     raise_z(pause_position[Z_AXIS]);
diff --git a/Firmware/variants/MK25-RAMBo10a.h b/Firmware/variants/MK25-RAMBo10a.h
index 4e02bf14f..77c0fa477 100644
--- a/Firmware/variants/MK25-RAMBo10a.h
+++ b/Firmware/variants/MK25-RAMBo10a.h
@@ -184,6 +184,9 @@
 #endif
 #define BED_MAXTEMP 125
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK25-RAMBo13a.h b/Firmware/variants/MK25-RAMBo13a.h
index 3b7a81408..b5d9324f4 100644
--- a/Firmware/variants/MK25-RAMBo13a.h
+++ b/Firmware/variants/MK25-RAMBo13a.h
@@ -185,6 +185,9 @@
 #endif
 #define BED_MAXTEMP 125
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK25S-RAMBo10a.h b/Firmware/variants/MK25S-RAMBo10a.h
index 906ba6859..60e892337 100644
--- a/Firmware/variants/MK25S-RAMBo10a.h
+++ b/Firmware/variants/MK25S-RAMBo10a.h
@@ -184,6 +184,9 @@
 #endif
 #define BED_MAXTEMP 125
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK25S-RAMBo13a.h b/Firmware/variants/MK25S-RAMBo13a.h
index bb3ad41af..6a2eb7792 100644
--- a/Firmware/variants/MK25S-RAMBo13a.h
+++ b/Firmware/variants/MK25S-RAMBo13a.h
@@ -185,6 +185,9 @@
 #endif
 #define BED_MAXTEMP 125
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3-E3DREVO.h b/Firmware/variants/MK3-E3DREVO.h
index 9efb587dd..0b67db093 100644
--- a/Firmware/variants/MK3-E3DREVO.h
+++ b/Firmware/variants/MK3-E3DREVO.h
@@ -324,6 +324,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3-E3DREVO_HF_60W.h b/Firmware/variants/MK3-E3DREVO_HF_60W.h
index 5ec1bdb8d..53def67ca 100644
--- a/Firmware/variants/MK3-E3DREVO_HF_60W.h
+++ b/Firmware/variants/MK3-E3DREVO_HF_60W.h
@@ -324,6 +324,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3.h b/Firmware/variants/MK3.h
index b9ab1ed3c..0cc478a4b 100644
--- a/Firmware/variants/MK3.h
+++ b/Firmware/variants/MK3.h
@@ -324,6 +324,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3S-E3DREVO.h b/Firmware/variants/MK3S-E3DREVO.h
index d426d7d7d..952e8e881 100644
--- a/Firmware/variants/MK3S-E3DREVO.h
+++ b/Firmware/variants/MK3S-E3DREVO.h
@@ -326,6 +326,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3S-E3DREVO_HF_60W.h b/Firmware/variants/MK3S-E3DREVO_HF_60W.h
index de86f6c02..ed8c2d64e 100644
--- a/Firmware/variants/MK3S-E3DREVO_HF_60W.h
+++ b/Firmware/variants/MK3S-E3DREVO_HF_60W.h
@@ -326,6 +326,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/MK3S.h b/Firmware/variants/MK3S.h
index 32ca987b0..7252a1039 100644
--- a/Firmware/variants/MK3S.h
+++ b/Firmware/variants/MK3S.h
@@ -326,6 +326,9 @@
 #define BED_MAXTEMP 125
 #define AMBIENT_MAXTEMP 80
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/obsolete/1_75mm_MK2-RAMBo10a-E3Dv6full.h b/Firmware/variants/obsolete/1_75mm_MK2-RAMBo10a-E3Dv6full.h
index b9c970b37..0e2be257d 100644
--- a/Firmware/variants/obsolete/1_75mm_MK2-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/obsolete/1_75mm_MK2-RAMBo10a-E3Dv6full.h
@@ -117,6 +117,9 @@ EXTRUDER SETTINGS
 #endif
 #define BED_MAXTEMP 150
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70
diff --git a/Firmware/variants/obsolete/1_75mm_MK2-RAMBo13a-E3Dv6full.h b/Firmware/variants/obsolete/1_75mm_MK2-RAMBo13a-E3Dv6full.h
index b89d95f9b..168bbc8ba 100644
--- a/Firmware/variants/obsolete/1_75mm_MK2-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/obsolete/1_75mm_MK2-RAMBo13a-E3Dv6full.h
@@ -116,6 +116,9 @@ EXTRUDER SETTINGS
 #endif
 #define BED_MAXTEMP 150
 
+//Lowertemp
+#define HEATER_LOWER_TEMP 50 //lower hotend temperature by 50°C
+
 #if defined(E3D_PT100_EXTRUDER_WITH_AMP) || defined(E3D_PT100_EXTRUDER_NO_AMP)
 // Define PID constants for extruder with PT100
 #define  DEFAULT_Kp 21.70