From 980c009fc7ff8ec07d37a1d936cf5711cb50cbdd Mon Sep 17 00:00:00 2001
From: Scott Lahteine <thinkyhead@users.noreply.github.com>
Date: Mon, 21 Feb 2022 19:55:19 -0600
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20Dyze=20Design=20PT100=20Amplifier?=
 =?UTF-8?q?=20Board=20(#23760)?=
MIME-Version: 1.0
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---
 Marlin/Configuration.h                       |  1 +
 Marlin/src/module/thermistor/thermistor_68.h | 54 ++++++++++++++++++++
 Marlin/src/module/thermistor/thermistors.h   |  3 ++
 3 files changed, 58 insertions(+)
 create mode 100644 Marlin/src/module/thermistor/thermistor_68.h

diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 752fd1370a..6f7b1bdf4a 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -459,6 +459,7 @@
  *    61 : 100kΩ  Formbot/Vivedino 350°C Thermistor - beta 3950
  *    66 : 4.7MΩ  Dyze Design High Temperature Thermistor
  *    67 : 500kΩ  SliceEngineering 450°C Thermistor
+ *    68 : PT100 amplifier board from Dyze Design
  *    70 : 100kΩ  bq Hephestos 2
  *    75 : 100kΩ  Generic Silicon Heat Pad with NTC100K MGB18-104F39050L32
  *  2000 : 100kΩ  Ultimachine Rambo TDK NTCG104LH104KT1 NTC100K motherboard Thermistor
diff --git a/Marlin/src/module/thermistor/thermistor_68.h b/Marlin/src/module/thermistor/thermistor_68.h
new file mode 100644
index 0000000000..270456dcb5
--- /dev/null
+++ b/Marlin/src/module/thermistor/thermistor_68.h
@@ -0,0 +1,54 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2022 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#define REVERSE_TEMP_SENSOR_RANGE_68 1
+
+// PT100 amplifier board from Dyze Design
+const temp_entry_t temptable_68[] PROGMEM = {
+  { OV(273), 0   },
+  { OV(294), 20  },
+  { OV(315), 40  },
+  { OV(336), 60  },
+  { OV(356), 80  },
+  { OV(376), 100 },
+  { OV(396), 120 },
+  { OV(416), 140 },
+  { OV(436), 160 },
+  { OV(455), 180 },
+  { OV(474), 200 },
+  { OV(494), 220 },
+  { OV(513), 240 },
+  { OV(531), 260 },
+  { OV(550), 280 },
+  { OV(568), 300 },
+  { OV(587), 320 },
+  { OV(605), 340 },
+  { OV(623), 360 },
+  { OV(641), 380 },
+  { OV(658), 400 },
+  { OV(676), 420 },
+  { OV(693), 440 },
+  { OV(710), 460 },
+  { OV(727), 480 },
+  { OV(744), 500 }
+};
diff --git a/Marlin/src/module/thermistor/thermistors.h b/Marlin/src/module/thermistor/thermistors.h
index 3d9ef5062d..9f2ebce49a 100644
--- a/Marlin/src/module/thermistor/thermistors.h
+++ b/Marlin/src/module/thermistor/thermistors.h
@@ -156,6 +156,9 @@ typedef struct { int16_t value; celsius_t celsius; } temp_entry_t;
 #if ANY_THERMISTOR_IS(67) // R25 = 500 KOhm, beta25 = 3800 K, 4.7 kOhm pull-up, SliceEngineering 450 °C Thermistor
   #include "thermistor_67.h"
 #endif
+#if ANY_THERMISTOR_IS(68) // PT-100 with Dyze amplifier board
+  #include "thermistor_68.h"
+#endif
 #if ANY_THERMISTOR_IS(12) // beta25 = 4700 K, R25 = 100 kOhm, Pull-up = 4.7 kOhm, "Personal calibration for Makibox hot bed"
   #include "thermistor_12.h"
 #endif