Arduino thermistor library

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Contents

• Development Status
• Installation Instructions
• Issue/Bug report template
• Supported devices
• Temperature sensors available
• Acknowledgements
• More information

Development Status

Most marlin is applied to calculate the temperature accurately.

• Supports any number of thermistors, the only thing that limits you is the number of analog inputs your arduino card has
• The temperature output is in degrees centigrade.

Installation Instructions

• Using Arduino IDE
  • Clic in green Clone or download button.
  • Select download as zip.
  • Follow this instruccions: Instructions for Windows or mac

Issue/Bug report template

Before reporting an issue, make sure you've searched for similar one that was already created.

Example with ramps schematic

Supported thermistors

All definitions in src/Configuration.h file.

Example configuration

• #define TEMP_SENSOR_0 80 // This is thermistor 0
• #define TEMP_SENSOR_1 0 // This is thermistor 1
• #define TEMP_SENSOR_2 0 // This is thermistor 2
• #define TEMP_SENSOR_3 0 // This is thermistor 3
• #define TEMP_SENSOR_4 0 // This is thermistor 4
• #define TEMP_SENSOR_BED 80 // This is not used thermistor

At this example we asigned to therm0 80 ( 3950 thermistor 100K - 4k7 Pull up and 10Uf Capacitor )(RAMPS STYLE).
In basic example selected thermistor is PIN A0 and therm0 (thermistor therm1(A0,0)).
therm 1 is an 3950 thermistor connected in A0 pin with 4k7 pullup and 10Uf capacitor to GND.

Temperature sensors available

• 0 : not used
  

• 1 : 100k thermistor - best choice for EPCOS 100k (4.7k pullup)
  

• 2 : 200k thermistor - ATC Semitec 204GT-2 (4.7k pullup)
  

• 3 : Mendel-parts thermistor (4.7k pullup)
  

• 4 : 10k thermistor !! do not use it for a hotend. It gives bad resolution at high temp. !!
  

• 5 : 100K thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (4.7k pullup)
  

• 6 : 100k EPCOS - Not as accurate as table 1 (created using a fluke thermocouple) (4.7k pullup)
  

• 7 : 100k Honeywell thermistor 135-104LAG-J01 (4.7k pullup)
  

• 71: 100k Honeywell thermistor 135-104LAF-J01 (4.7k pullup)
  

• 8 : 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup)
  

• 9 : 100k GE Sensing AL03006-58.2K-97-G1 (4.7k pullup)
  

• 10 : 100k RS thermistor 198-961 (4.7k pullup)
  

• 11 : 100k beta 3950 1% thermistor (4.7k pullup)
  

• 12 : 100k 0603 SMD Vishay NTCS0603E3104FXT (4.7k pullup) (calibrated for Makibox hot bed)
  

• 13 : 100k Hisens 3950  1% up to 300°C for hotend "Simple ONE " & "Hotend "All In ONE"
  

• 20 : the PT100 circuit found in the Ultimainboard V2.x
  

• 60 : 100k Maker's Tool Works Kapton Bed Thermistor beta=3950
  

• 66 : 4.7M High Temperature thermistor from Dyze Design
  

• 70 : the 100K thermistor found in the bq Hephestos 2
  

• 75 : 100k Generic Silicon Heat Pad with NTC 100K MGB18-104F39050L32 thermistor
  

• 80 : 3950 thermistor 100K - 4k7 Pull up and 10Uf Capacitor
  
   1k ohm pullup tables - This is atypical, and requires changing out the 4.7k pullup for 1k.
                        (but gives greater accuracy and more stable PID)
  

• 51 : 100k thermistor - EPCOS (1k pullup)
  

• 52 : 200k thermistor - ATC Semitec 204GT-2 (1k pullup)
  

• 55 : 100k thermistor - ATC Semitec 104GT-2 (Used in ParCan & J-Head) (1k pullup)
  
    Use these for Testing or Development purposes. NEVER for production machine.
  

• 998 : Dummy Table that ALWAYS reads 25°C or the temperature defined below.
  

• 999 : Dummy Table that ALWAYS reads 100°C or the temperature defined below.
  

Acknowledgements

• Marlin Firmware

More information

• Marlin usage

Authors

• Miguel A. Califa U. - GitHub - CV
• Carlos M. Pallares C. - GitHub - CV