Got the new thermocouples. They are exactly the same that StephenR0 posted. At the very least, they react much faster than the ones that came with the FG100 clone.
Testing last build. BC2 tip. Default iron and PID values (active detection off). At first got big oscillations, about more than the height of graphic display. FG100 didn't detected any oscillation, however. I guess thermocouple thermal mass in some way attenuates these oscillations? After calibrating, always with default PID values, oscillations are mostly gone, -5 +10, and the readings on the FG100 show a difference to the set temperature of 20º at most. Callibration values 1421, 2082,2395
When going from lower to higher, oscillations are bigger at first, then for a few seconds after setting a higher temperature it stabilizes. Under 400º set point, they are about -5 +10º, as said before, and they doesn't seem to get any flatter with time. But at 400º, they become almost flat quite fast.
When going from higher to lower temperatures, I'm getting a nice ramp until the new, lower set point is reached, then I'm seeing the flatests graphics ever. Oscillations about -1, 0º.
FG100 readings are spot on set points 300,350,400º. At most a 2º difference. At 450º the FG100 reading is 430. At 250º, reading is 235. Quite repeatable. So I guess my calibration could get better, but this is enough for me.
I think that going as high as 450º is excesive. No matter how much I clean the tip, tin oxidizes almost instantly and the readings obtained are less trusty, IMHO. Sometimes I can hear dilatation clics coming from the tip. Also, Quicko doesn't recommend going over 380º. I'm using Qicko tips exclusively, this BC2 is one of the "high grade"
type, with the black coating, and is the most burned in one. I would suggest that the higher calibration point would be nicer at 400º
Very nice to have the selected tip visible in the screen. BTW, how many ºC are represented by each step in the graphic? Just curious...
All in all, I would say this is a big improvement. First times, I was getting resets while trying to calibrate at 450º. No more. Now it's easier to callibrate and temperatures are much more stable.
On the flop side, I noticed some weird behaviour while editing tips. Usually I create a DFLT tip with the same values as the firmware-included BC3, then I delete BC3. This time, it was not possible, after creating a new DFLT tip, when deleting BC3, it was DFLT which got deleted. After some times, I created a BC2 tip, calibrated it, then noticed that it was still with default values when going to see calibration values. Then somehow I deleted BC3. Then BC2 got calibration values again? I'm not really sure what happened. However, I'm not drunk yet, I can swear it.
David, thank you very much. This is getting better and better.