Hi All
I've just built a heated chamber around my home brewed printer. I thought I'd share the config here for reference purposes and for also comments before I actually switch it on, in case I can improve/tweak anything. I have a 400w ceramic heater switched by a solid state relay, and controlled by a semitec (E3D) thermistor. Here's the config. Please feel free to comment. I'll be testing this in a couple of days:
temperature_control.chamber.enable true #
temperature_control.chamber.thermistor_pin 0.26 #
temperature_control.chamber.heater_pin 2.6 #
temperature_control.chamber.pwm_frequency 5 # Set low to control SSR
temperature_control.chamber.thermistor Semitec # see smoothie site for details
#temperature_control.chamber.beta 4300 # or set the beta value
temperature_control.chamber.set_m_code 141 #
temperature_control.chamber.set_and_wait_m_code 191 #
temperature_control.chamber.designator C #
temperature_control.chamber.bang_bang true # set to true to use bang bang control rather than PID
temperature_control.chamber.hysteresis 2.0 # set to the temperature in degrees C to use as hysteresis