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BigTreeTech SB2209 CAN Bus Expansion Board with Rapido 2 hf hotend not compatible?

800VatorKing

New member
Hello I have BTT-SB2209-V1 on the way and I am going though the documentation and see that my hotend, Rapido 2 HF, uses the 104NT thermistor. Is there any way to get this to work with the can bus board since it only has pt100/pt1000 jumpers? Any help would be appreciated.
 
Hello I have BTT-SB2209-V1 on the way and I am going though the documentation and see that my hotend, Rapido 2 HF, uses the 104NT thermistor. Is there any way to get this to work with the can bus board since it only has pt100/pt1000 jumpers? Any help would be appreciated.
Does it have normal TH0 port for thermistor? If yes, just connect it there.
 
There is a two-pin TH0 connector next to the PT100/1000 connector. Just make sure you have the correct pin and thermistor type specified in your printer.cfg. You don't need to touch the PT1000 switches at all. I think the Mellow boards do share the same connector for thermistors and PT100/1000, so maybe that's where the confusion lies.

IIRC, the Rapido V2 thermistor comes with a 2-pin Microfit on it, so I just made a short Microfit to GH adapter cable using parts included with the BTT board, rather than trying to splice a tiny GH 1.25mm pins directly onto the thermistor wires.
 
Hi! So, what is the correct config in printer.cfg?? I couldn't get it to work. It constantly shows a value between 106-110 degrees and when I turn on the hotend, this value does not change and after a short while the Klipper gives an error and closes.
 
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