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sderose

Thermocouple not behaving

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Hi! I have 2 Ultimaker thermocouple transmitter boards, that I'm trying connect between an Mk7 dual extruder and a RAMPS board. I've been over the pin choice, the firmware pin assignments, the wiring, etc. a hundred times, but I still get no real temperature readings. The printer interface software just says "max temp exceeded" (one shows 500c, the other about 288C) and shuts down (even when the head is cool to the touch). A test driver I wrote reports more plausible numbers, but they don't change when the extruder is hot. Is there any help available on how to troubleshoot this kind of thing? I've been reading all over, and trying all kinds of things, but after a looooong time still no success. Any ideas?

Thanks!

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