Thanks for the prompt reply, the motherboard is a green one, V1.5.7.
The heated bed came from Anet and has the connector on it, unfortunatly there does not seem to be any info on the sensor. I think I need to know two things - do I need the 4.7K resistor to be fitted at R4 position, and where to set the sensor type? I have read some people referring to editing the 'configuration.h' file. Although I was an electronics engineer, and now work with PC's I do not have much experience with 3D printing software. Do I need to make changes in Cura or in the Ardunio software, and if so where / how? Any help will be much appreciated. The Ultimaker works, the MOSFET module heat's the bed up if I manually add a 12V signal to the input - I just need the temperature to be sensed!
best regards, Kev
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gr5 2,224
Is this the newer UMO with the white circuit board? If so it is expecting a PT100 temp sensor.
And kind of temp sensor is this? There are so many types. For example a lot of people use thermistors for heated beds because they tend not to get much hotter than 150C and many thermistors can't handle temps over 150C. Or some people use PT100 or some use thermocouples. It matters.
And although every PT100 out there has the exact same table that translates resistance to temperature, that is not true of most thermistors. Company A might sell 3 different types of 100K thermistor and company B will almost certainly sell a thermistor with a 4th type. They are almost all different. You need to know exact brand and model number of the thermistor and then make sure the UMO firmware has the right temp table.
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