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This is sketch_jan21a, you are obviously doing something wrong. Extract the .rar file, open sketch_feb07a1.ino, if you get a pop-up to create a folder for the sketch press "Yes".
sketch_feb07a1.ino is not empty.
At the "REFLOW_STATE_MENU_STEP_RAMP" you set degrees (C) per second, not seconds per degrees. The minimum is 0.25C/sec.
I was gonna make an automated PID calibration option with another two thermocouples into the bottom and top heater, but it needs a lot of work. Do not use ceramic heaters, it's harder to calibrate their PID because of bigger thermal capacity (colding/heating slower). Use halogen instead.
At the "REFLOW_STATE_MENU_STEP_RAMP" you set degrees (C) per second, not seconds per degrees. The minimum is 1C/sec.
Did you use the right libraries and correct initiations for your sensor chip?
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