From 97ca1b3f4de5440f25236e98bc893a2100834897 Mon Sep 17 00:00:00 2001
From: AnHardt <github@kitelab.de>
Date: Mon, 18 May 2015 14:15:29 +0200
Subject: [PATCH] Name magic value 20 to MAX_OVERSHOOT_PID_AUTOTUNE

to make it better findable.
---
 Marlin/temperature.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index 9ccd1de14d3..07db02ab49a 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -312,7 +312,8 @@ void PID_autotune(float temp, int extruder, int ncycles)
         }
       } 
     }
-    if (input > temp + 20) {
+    #define MAX_OVERSHOOT_PID_AUTOTUNE 20
+    if (input > temp + MAX_OVERSHOOT_PID_AUTOTUNE) {
       SERIAL_PROTOCOLLNPGM(MSG_PID_TEMP_TOO_HIGH);
       return;
     }