temperature_sensors: Define default thermistors in config

Move the definitions of the default thermistors from thermistors.py to
the temperature_sensors.cfg file.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/temperature_sensors.cfg

@@ -1,5 +1,10 @@
 # This file loads the default temperature sensors.
 
+
+########################################
+# Module loading
+########################################
+
 # Load "PT1000", "PT100 INA826", "AD595", "AD597", "AD8494", "AD8495",
 # "AD8496", and "AD8497" sensors
 [adc_temperature]
@@ -25,7 +30,62 @@
 # Load "temperature_mcu" sensor
 [temperature_mcu]
 
-# Load "EPCOS 100K B57560G104F", "ATC Semitec 104GT-2", "NTC 100K beta 3950",
-# "Honeywell 100K 135-104LAG-J01", "NTC 100K MGB18-104F39050L32",
-# "SliceEngineering 450", and "TDK NTCG104LH104JT1" sensors
-[thermistor]
+
+########################################
+# Default thermistors
+########################################
+
+# Definition from (20211101): https://download.lulzbot.com/retail_parts/Completed_Parts/100k_Semitech_GT2_Thermistor_KT-EL0059/GT-2-glass-thermistors.pdf
+[thermistor ATC Semitec 104GT-2]
+temperature1: 20
+resistance1: 126800
+temperature2: 150
+resistance2: 1360
+temperature3: 300
+resistance3: 80.65
+
+# Definition from (20211101): https://www.tdk-electronics.tdk.com/inf/50/db/ntc_09/Glass_enc_Sensors__B57560__G560__G1560.pdf
+# (B57560G104 is same definition as B57560G1104)
+[thermistor EPCOS 100K B57560G104F]
+temperature1: 25
+resistance1: 100000
+temperature2: 150
+resistance2: 1641.9
+temperature3: 250
+resistance3: 226.15
+
+# Definition from (20211101): https://www.sliceengineering.com/products/thermistor-high-temperature and https://docs.google.com/spreadsheets/d/1904x5JK-Sup-cX5DqHiiZWaFVTK6_PQBFxgi_6yXEJw/edit#gid=0
+[thermistor SliceEngineering 450]
+temperature1: 25
+resistance1: 500000
+temperature2: 200
+resistance2: 3734
+temperature3: 400
+resistance3: 240
+
+# Definition from (20211101): https://product.tdk.com/system/files/dam/doc/product/sensor/ntc/chip-ntc-thermistor/rt_sheets/ntcg104lh104jt1.csv
+[thermistor TDK NTCG104LH104JT1]
+temperature1: 25
+resistance1: 100000
+temperature2: 50
+resistance2: 31230
+temperature3: 125
+resistance3: 2066
+
+# Definition from (20211101): https://sensing.honeywell.com/135-104lag-j01-thermistors
+[thermistor Honeywell 100K 135-104LAG-J01]
+temperature1: 25
+resistance1: 100000
+beta: 3974
+
+# Definition inherent from name
+[thermistor NTC 100K beta 3950]
+temperature1: 25
+resistance1: 100000
+beta: 3950
+
+# Definition from description of Marlin "thermistor 75"
+[thermistor NTC 100K MGB18-104F39050L32]
+temperature1: 25
+resistance1: 100000
+beta: 4100

klippy/extras/thermistor.py

@@ -101,32 +101,6 @@ class CustomThermistor:
     def create(self, config):
         return PrinterThermistor(config, self.params)
 
-# Default sensors
-Sensors = {
-    "EPCOS 100K B57560G104F": {
-        't1': 25., 'r1': 100000., 't2': 150., 'r2': 1641.9,
-        't3': 250., 'r3': 226.15 },
-    "ATC Semitec 104GT-2": {
-        't1': 20., 'r1': 126800., 't2': 150., 'r2': 1360.,
-        't3': 300., 'r3': 80.65 },
-    "SliceEngineering 450": {
-        't1': 25., 'r1': 500000., 't2': 200., 'r2': 3734.,
-        't3': 400., 'r3': 240. },
-    "TDK NTCG104LH104JT1": {
-        't1': 25., 'r1': 100000., 't2': 50., 'r2': 31230.,
-        't3': 125., 'r3': 2066. },
-    "NTC 100K beta 3950": { 't1': 25., 'r1': 100000., 'beta': 3950. },
-    "Honeywell 100K 135-104LAG-J01": { 't1': 25., 'r1': 100000., 'beta': 3974.},
-    "NTC 100K MGB18-104F39050L32": { 't1': 25., 'r1': 100000., 'beta': 4100. },
-}
-
-def load_config(config):
-    # Register default thermistor types
-    pheaters = config.get_printer().load_object(config, "heaters")
-    for sensor_type, params in Sensors.items():
-        func = (lambda config, params=params: PrinterThermistor(config, params))
-        pheaters.add_sensor_factory(sensor_type, func)
-
 def load_config_prefix(config):
     thermistor = CustomThermistor(config)
     pheaters = config.get_printer().load_object(config, "heaters")