This is what pronterface will return when you type the M105 command, where "C" is the chamber same thing as the "B" which is for the bed.
If we would add two extruders it would look like
T0：31.0/0.0 T1：31.0/0.0 B：31.0/0.0 C:31.0/0.0
There are four thirmistor pins on smoothieware. We are using TH3 to report back the temperature.
SSR to control the heaters and fans
looks similar to this code
temperature_control.chamber.enable true #