Skip to main content

Site Navigation

Your Account

Choose Language

Help

Revision to Thermocouple daughter board

Tony

[title|Thermocouple daughter board]
 
[toc]
 
 
The Duet WiFi and Duet Ethernet support up to two daughterboards stacked (with a further two stacked on the Duex2 or 5):
 
'''Version 1.1 thermocouple boards''': MAX31856-based== Overview of temperature daughter boards each supporting two thermocouples of type B, E,J K, N, R, S or T.==
'''Version 1.1 thermocouple boards''': MAX31856-based== Overview of temperature daughter boards each supporting two thermocouples of type B, E,J K, N, R, S or T.==
 
'''Older versions''': MAX31855-basedThe Duet 2 3d printer controllers support one or more temperature daughter boards,boards which provide expanded temperature sensor connectivity using Maximum integrated ICs. These daughter boards connect to the Duet digitally over SPI.

=== Number of temperature daughter boards supported ===

The Duet 2 WiFi and Duet 2 Ethernet support up to two temperature daughter boards stacked, with a further two stacked on the Duex2 or 5. This provides a total of 8 digital temperature inputs to 8 . PT100 or Thermocouple daughter boards can be mixed and matched.

[image|1024|size=large|align=center]

The Duet 2 Maestro supports 1 temperature daughter board for two SPI temperature input channels. On the Maestro either a Thermocouple or PT100 daughter board can be connected, but not both.

== Thermocouple Support ==

There have been two versions of the thermocouple board. the change from version 1.0 to 1.1 was to made to move to the MAX31856 sensor IC.

=== Version 1.1 thermocouple boards ===

* MAX31856-based daughter boards
each supporting two K-type thermocouples of type B, E,J K, N, R, S or T.
'''Older versions''': MAX31855-basedThe Duet 2 3d printer controllers support one or more temperature daughter boards,boards which provide expanded temperature sensor connectivity using Maximum integrated ICs. These daughter boards connect to the Duet digitally over SPI.

=== Number of temperature daughter boards supported ===

The Duet 2 WiFi and Duet 2 Ethernet support up to two temperature daughter boards stacked, with a further two stacked on the Duex2 or 5. This provides a total of 8 digital temperature inputs to 8 . PT100 or Thermocouple daughter boards can be mixed and matched.

[image|1024|size=large|align=center]

The Duet 2 Maestro supports 1 temperature daughter board for two SPI temperature input channels. On the Maestro either a Thermocouple or PT100 daughter board can be connected, but not both.

== Thermocouple Support ==

There have been two versions of the thermocouple board. the change from version 1.0 to 1.1 was to made to move to the MAX31856 sensor IC.

=== Version 1.1 thermocouple boards ===

* MAX31856-based daughter boards
each supporting two K-type thermocouples of type B, E,J K, N, R, S or T.
 
[image|419|align=center]
 
A total of=== Older versions ===

* MAX31855-based daughter boards, each supporting
two temperatureK-type thermocouples

== Configuration ==

For setting up the Duet 2 to use thermocouple sensors see: [[Connecting thermocouples]]

== MAX31856
sensor daughter boards (PT100 or Thermocouple) are supportedIC details ==

The MAX31856 performs cold-junction compensation and digitizes the signal from any type of thermocouple. The output data is formatted in degrees Celsius. This converter resolves temperatures to 0.0078125°C, allows readings as high as +1800°C and as low as -210°C (depending
on thermocouple type), and exhibits thermocouple voltage measurement accuracy of ±0.15%. See the DuetWifi, with a further 2[https://www.maximintegrated.com/en/products/sensors/MAX31856.html|Maxim integrated website for more details on the Duex2 or Duex5 bringing the total number of digitalMAX31856].

== Other Temperature sensors ==

The Duet 2 Wifi, Ethernet and Maestro support various other
temperature inputs to 8.sensors.

See:
A total of=== Older versions ===

* MAX31855-based daughter boards, each supporting
two temperatureK-type thermocouples

== Configuration ==

For setting up the Duet 2 to use thermocouple sensors see: [[Connecting thermocouples]]

== MAX31856
sensor daughter boards (PT100 or Thermocouple) are supportedIC details ==

The MAX31856 performs cold-junction compensation and digitizes the signal from any type of thermocouple. The output data is formatted in degrees Celsius. This converter resolves temperatures to 0.0078125°C, allows readings as high as +1800°C and as low as -210°C (depending
on thermocouple type), and exhibits thermocouple voltage measurement accuracy of ±0.15%. See the DuetWifi, with a further 2[https://www.maximintegrated.com/en/products/sensors/MAX31856.html|Maxim integrated website for more details on the Duex2 or Duex5 bringing the total number of digitalMAX31856].

== Other Temperature sensors ==

The Duet 2 Wifi, Ethernet and Maestro support various other
temperature inputs to 8.sensors.

See:
 
For setting up the Duet us use PT100 sensors see:* [[Temperature_sensors|A comparison of temperature sensors]]
* [[PT100 temperature sensor daughter board]]
*
[[Connecting thermocouplesthermistors or PT1000 temperature sensors]]
For setting up the Duet us use PT100 sensors see:* [[Temperature_sensors|A comparison of temperature sensors]]
* [[PT100 temperature sensor daughter board]]
*
[[Connecting thermocouplesthermistors or PT1000 temperature sensors]]

To undo the changes made by this version, click 'Revert Changes.' This will automatically restore the previous version of this guide.

Revert Changes