Questions about thermocouple and thermistor.

[UniProject 0]

Hello Guys!

We are building an Ultimaker from different part sources. Actually we have almost the material for two Ultimakers.

Firstly we have to do the Challenge with a Sainsmart UM Kit with that UM 1.5.7 Board.

We also have bought the print heads by E3D model V6 which have including ntc 100k thermistors which have already tables in marlin. As the V1.5.7. Board works with thermocouple, there was the question how to connect this. I got already an answere to just connect Signal and GND, to the board but I'd have to look for the resistors behind the connectors. Is it true, that I need a different resistor for each type of thermistor?

Could someone telll me which I need for pt100 and ntc100k?

The second question for the moment is, is it true, that the UM V2.1.1 Board only can handle pt100? Does that have anything to do with the resistors as well?

Thank you for your advices.

Greets.

Edited November 29, 2015 by Guest

[3DNoobler 0]

Good Afternoon Guys. I have exactly the same question.

I have a UM v2.1.1 controller board. not built into the printer jet (work in progress).

I can easily get a 100k thermistor, but a PT100 B is a bit harder to source all the way down in South Africa. And ALLOT cheaper.

This thread explains that you need to use: https://ultimaker.com/en/community/11425-e3d-thermocouple-mount-on-umo-

...but why cant you just connect the 100k directly onto the board where you would connect the PT100 B and adapt Marlin accordingly.

[UniProject 0]

My solution for thermistors as I wrote in the startpost works with that V1.5.7 Board.

I think the UM2 Board works only with PT100, no matter which type, but you have to adpat that in marlin.