Update serial-control.py

[electronicamystica]

Added Temp2 + Temp3 to the graph.
Added behind the 4 other temperatures so colours for Setpoint and Coldjunction don't change
Uncomment when needed.
Maybe using X1/X2 as label instead of Temp2/Temp3?

[jieter]

Yes, we should add those. Keeping the same names in firmware and host-PC is the way to go I think, so we should change Temp0/Temp1 to L/R in python script, or change them in the firmware too, because for my oven, L/R makes no sense, as they are placed front/back.

I think it's nice if the script detects non-zero values for X1/X2 and automagically adds them to the graph.

[xnk]

I'll go ahead and merge this. I've been thinking about the naming, maybe the easiest thing would be to have two different names for the first two sensors which can be configured as a setup item (L/R or F/B) and then keep X1 and X2. In either case those should then be the names used by the oven in the serial output and serial-control.py might then be able to pick the names up from the header?

[jieter]

Yes, oven should report available sensors in some parsable format so the python script can decide what values to display automatically. Names could be parsed from the header of course, the the script needs some refactoring after the serial stuff is more stable.