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Ok, so now it is working like it should.

I put a pull down resistor of 10k ohm 1/8w between the negative side of the thermocouple to the ground of th AD597 board.
My big mistake was to ground the...

I'm with Repetier, but I assume that's the same thing.
I've already changed my voltage regulator for the l7805cv (5v output, 1.5amp, same max/min volt than the ams1117-5.0) since I burned the...

I found this : https://ultimaker.com/en/community/19184-no-more-error-mintemp-on-ultimaker-original-ad597-controller-problem-is-solved-totally

I'll try it soon

Hi everybody,

I've just throw out the melzi board on my Wanhao I3 for a ramps 1.4,
I also changed the thermistor for a thermocouple type K with the AD597, But I have strange reading.
It heat up...