How many temperature sensors on Duet
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What is the maximum number of temperature sensor Duet can manage?
I would like to add controlled hot chamber but I already have 2 hotends and 1 bed, no more temp inputs.
Are there some pins to addres to read one more temp sensor ?thx!
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This may help you
https://duet3d.dozuki.com/Wiki/Duet_Wiring_Diagrams
See the xpansion pinout. 35 to 39 are what you are looking for, I think
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The maximum number of temperature sensors supported in firmware is 16. That's 8 thermistors or PT100 sensors, and 8 PT100 or thermocouple sensors connected using daughter boards.
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so without the daugher board I can connect an NTC probe directly to pin 35 (thermistor) and pin 40 (vssa) right ?
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You must also connect a resistor (usually 4.7k) between the thermistor input and VREF on the expansion connector.